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v3.26.1

Commitments and Contingencies - Legal Claims and Insurance (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025 | Sep. 30, 2025
Rollforward of reserves for legal claims |  |  |  |  |
Reserves for legal claims, beginning of period | $ 1,136.7 | $ 991.3 | $ 1,143.6 | $ 949.6 |
Increase in reserves | 37.1 | 59.7 | 87.3 | 132.3 |
Payments | (34.7) | (14.9) | (91.8) | (45.8) |
Reserves for legal claims, end of period | $ 1,139.1 | 1,036.1 | $ 1,139.1 | 1,036.1 |
Construction Defect Portion of Loss Contingency Accrual | 99.00% |  | 99.00% |  | 98.00%
Litigation Settlement, Expense |  |  | $ 119.4 | 142.5 |
Insurance receivables | $ 123.6 | $ 138.5 | $ 123.6 | $ 138.5 | $ 167.0

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- Definition Amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(a)(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(6)) -SubTopic 10 -Topic 220 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
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