This appeal involves a debate over the arbitrability of four purchase price disputes arising out of a transaction between Lumbermens Mutual Casualty Company (“Lumbermens”) and Broadspire Management Services, Inc. (“Broadspire”). Lumbermens sold Broadspire an insurance administration business in 2003 pursuant to a purchase agreement which provided that certain kinds of price disputes stemming from the transaction would be referred to an accounting or appraisal firm for arbitration. Four such price disputes arose, and Lumbermens sought to resolve them under the purchase price dispute procedure. Broadspire refused, asserting that Lumbermens had failed to satisfy certain necessary preconditions set forth in the purchase agreement; specifically, that Lumbermens’ written notices stating its disagreements with Broadspire’s price determinations lacked the requisite detail. The issue before us is whether the court or the arbitrator should decide this question of whether the necessary preconditions to arbitration have been satisfied. The district court concluded that the question was for the arbitrator, and we agree, because the issue of whether Lumbermens has adequately disputed Broadspire’s price reports is a procedural question about a condition precedent to arbitration. We affirm.
I. BACKGROUND
In July 2003, Lumbermens sold Broad-spire 1 an insurance administration business pursuant to a written Purchase Agreement (the “Agreement”). No cash was exchanged at the time of the closing. Instead, the purchase price was to be based on a series of annual “earnout” and “lump sum” payments to be made by Broadspire over the four years following the transaction, which the parties defined as the “earnout period.” Earnout payments would be based on the financial performance of the purchased business each year during the earnout period. Lump sum payments would be made if Broadspire sold off any parts of the purchased company during the earnout period, based on an estimate of the expected performance of the sold asset over the remainder of the four years.
*478 Article III of the Agreement, titled “Purchase Price,” set forth the methodology and procedures for determining the amount of the payments due each year. Broadspire had to calculate the amounts owed pursuant to a formula set forth in the Agreement, and prepare and deliver reports to Lumbermens setting forth in “reasonable detail” the calculations and assumptions on which its determinations were based. See generally Agreement § 3.3. Upon receiving a report from Broadspire, Lumbermens had 90 days to review it, during which time Broadspire had to make available to Lumbermens any books and records relevant to the review. If Lumbermens decided that it agreed with Broadspire’s determination, it would send an “Acceptance Notice” so indicating, or do nothing at all, and the amount Broadspire had set forth would become the binding payment amount for that year. But if Lumbermens disagreed with Broad-spire’s determination, it had to send Broadspire a “Disagreement Notice” saying so within the 90-day period. A Disagreement Notice has to “set[ ] forth in reasonable detail the basis for such disagreement and [Lumbermens’] determination of the payment required to be paid to [Lumbermens] under this Section 3.3.” Agreement § 3.3(g).
A. The Purchase Price Dispute Arbitration Clause
If Lumbermens submitted a timely Disagreement Notice to Broadspire indicating disagreement with a given earnout or lump sum report, the parties first had 30 days to try and resolve the differences themselves. Failing that, the dispute would be submitted to an accounting or appraisal firm for arbitration:
Purchase Price Disputes. If a party delivers a Disagreement Notice to the other party in a timely manner, then Buyer and Seller shall attempt in good faith to resolve such dispute within 30 days from the date of such notice. If Buyer and Seller cannot reach agreement ... then the dispute shall be promptly referred to an independent accounting or appraisal firm of national reputation mutually acceptable to Buyer and Seller, or if the parties are unable to agree on such a firm within 10 days ... to PricewaterhouseCoopers LLP (the “Aecounting/Appraisal Firm”) for binding resolution. The Accounting/Appraisal Firm may conduct such proceedings as the Aecounting/Appraisal Firm, in its sole discretion, determines will assist in resolving the dispute and shall, within 60 days ... deliver ... a written report setting forth its determination of all disputed amounts ... and its determinations will be conclusive and binding upon the parties.
Agreement § 3.4.
B. The General Arbitration Clause
In addition to the § 3.4 arbitration procedure intended specifically for Article III price disputes, the Agreement also contains a catch-all arbitration provision for all other disputes. It provides:
Dispute Resolution. Except as otherwise provided for in Article III, the following shall constitute the exclusive procedures and remedies for all disputes arising out of or relating to this Agreement.
Agreement § 14.11. Section 14.11 requires that the parties attempt in good faith to resolve disputes arising out of the Agreement, but if they cannot, it provides for binding arbitration by a three-arbitrator panel in accordance with the International Institute for Conflict Prevention & Resolution (“CPR”) Rules for Non-Administered Arbitration, and governed by the Federal Arbitration Act, 9 U.S.C. § 1 et seq. (“FAA”).
*479 C. The Four Purchase Price Disputes
The full history of the transaction and dispute between the parties is somewhat complex, but all of those details are not necessary to resolve question before us. At issue here are disputes over four price reports — three lump sum reports dated December 7, 2005, March 16, 2006, and October 16, 2006, and one earnout report dated June 22, 2006 — that Broadspire provided to Lumbermens under the above-described process and Lumbermens then timely disputed. On each occasion, Lumbermens sent a Disagreement Notice regarding Broadspire’s price determination. 2 Each was relatively general. Broadspire disputed the sufficiency of the Disagreement Notices, arguing that they did not meet § 3.3(g)’s requirement that they contain (1) “reasonable detail” and (2) Lumbermens alternative “determination of the payment required.” Lumbermens claimed that it could not provide the requisite level of detail called for by § 3.3(g), because Broadspire’s price reports were themselves lacking in details that would enable Lumbermens to do so. Lumbermens also claimed in its Disagreement Notices that it had not been given sufficient access to the books and records necessary to properly evaluate Broadspire’s determinations.
Lumbermens sought arbitration of each of these four disputes under the Purchase Price Dispute procedures set forth in § 3.4 of the Agreement, but Broadspire refused to arbitrate on the basis that Lumbermens had not met the precondition of filing adequate Disagreement Notices. Instead, Broadspire sought to commence panel arbitration of the disputes under the more general § 14.11 procedures. Eventually, on January 19, 2007, Lumbermens filed a Petition in Aid of Arbitration in the United States District Court for the Northern District of Illinois, seeking to compel arbitration under the § 3.4 provision and to compel Broadspire to produce certain documents and information to which it had not given Lumbermens access.
The district court ruled in favor of Lumbermens. With regard to which arbitration clause governed the dispute, § 3.4 or the broader § 14.11, the district judge concluded that “Lumbermens is clearly right” and that the Article III purchase price dispute procedure applied. The court concluded that the question of whether Lumbermens’ Disagreement Notices were adequate was “certainly within the purview of the arbitrator” and that the question was one that was “peculiarly within the competence” of an accounting/appraisal firm. The district judge ordered the parties to arbitrate the disputes under the § 3.4 procedures, and to each submit within ten days of his ruling the names of two potential accounting or appraisal firms to act as arbitrator to replace PrieewaterhouseCoopers, which was already acting as an arbitrator in an unrelated Article III price dispute arbitration. 3 The court also or *480 dered Broadspire to produce certain documents. Broadspire appealed.
II. ANALYSIS
The question before us is whether a court or an arbitrator should decide the question of whether the parties’ disputes are arbitrable under § 3.4 of the Agreement. Broadspire contends that Lumbermens did not file valid Disagreement Notices and has thus failed to satisfy a necessary precondition to bringing the dispute within the scope of § 3.4 arbitration, and that a court, not the § 3.4 arbitrator, should determine whether this is in fact the case. 4 Lumbermens responds that the § 3.4 procedure encompasses all disputes relating to purchase price, including any disputes over the sufficiency of Disagreement Notices themselves, and that it is for the § 3.4 arbitrator, not a court, to evaluate their sufficiency. Like the district court, we agree with Lumbermens and conclude that the sufficiency of the Disagreement Notices is a question to be answered by the § 3.4 arbitrator.
We review a district court’s decision to compel arbitration de novo, and any findings of fact for clear error.
Zurich Am. Ins. Co. v. Watts Indus., Inc.,
A. The Howsam Framework
The Supreme Court’s decision in
Howsam v. Dean Witter Reynolds, Inc.,
Our circuit has followed
Howsam
in distinguishing between “substantive” and “procedural” arbitrability questions, and in holding that the latter are presumptively for an arbitrator to decide. In
Employers Insurance Co. of Wausau v. Century Indemnity Co.,
B. The Disagreement Notice Dispute Is a Question for the Arbitrator
Just like the questions in
Howsam, Zurich American,
or
Employers Insurance,
the adequacy of Lumbermens’ Disagreement Notices is a procedural question about a condition precedent to arbitration under § 3.4 of the parties’ agreement and is for the arbitrator to address.
See Howsam,
*482
“In certain contexts, it is appropriate to presume that parties that enter into an arbitration agreement implicitly authorize the arbitrator to adopt such procedures as are necessary to give effect to the parties’ agreement.”
Stolt-Nielsen S.A. v. AnimalFeeds Int’l Corp.,
— U.S. -,
An analogous case from the Sixth Circuit buttresses our conclusion here. In
JPD, Inc. v. Chronimed Holdings, Inc.,
the parties signed a purchase agreement for the sale of a pharmacy that involved a price dispute arbitration process nearly identical to the one set forth in Article III here.
Broadspire cites our decision in
R.J. Corman Derailment Services, LLC v. International Union of Operating Engineers,
III. CONCLUSION
The district court’s ruling is Affirmed.
Notes
. We use the term "Broadspire” to include Defendant-Appellant Platinum Equity, LLC as well. Platinum’s role in the transaction is not discussed by the parties in their briefs, but it is characterized in a district court pleading as Broadspire's "former owner.” Platinum sought to have itself dismissed from the case before the district court, but the court rejected that motion and held that the question of whether Platinum is a proper party is for the arbitrator. That aspect of the district court's ruling was not specifically appealed, nor does Platinum make any separate arguments from those made by Broadspire.
. Our use of the term "Disagreement Notice” in referring to Lumbermens’ objections should not be taken as reflecting any conclusion as to their sufficiency. As we explain herein, that is a question for the § 3.4 arbitrator. Clearly, however. Lumbermens meant for them to be Disagreement Notices; the first objection was obviously disputing Broad-spire's December 7, 2005 price report and made reference to Agreement § 3.3(g), and each of the latter three actually bore the heading “Disagreement Notice.”
. At the time, the parties were in § 3.4 arbitration regarding a fifth price dispute, over Broadspire’s 2004 Earnout Report. That report is not at issue in this litigation. We do note, however, that Broadspire did not challenge the arbitrability of that dispute, despite the fact that Lumbermens’ Disagreement Notice for that report arguably had the same flaws Broadspire found in the later notices.
. Although it argued it before the district court, Broadspire does not take the position on appeal that the § 14.11 arbitration procedure should apply instead.
