Shareholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Sep. 30, 2025 |
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| Equity, Class of Treasury Stock [Line Items] | ||||
| Additional shares authorized | $ 1,100.0 | $ 1,100.0 | ||
| Repurchase and retirement of common stock | $ 0.0 | $ 9.3 | $ 2.4 | |
| Cash dividend paid during period, per share (in dollars per share) | $ 0.68 | $ 0.67 | $ 2.04 | $ 2.01 |
| Common stock excluded from calculation of diluted earnings per share (shares) | 2.9 | 2.9 | 2.9 | 3.3 |
| Stock Options and Certain Share-based Compensation Awards | ||||
| Equity, Class of Treasury Stock [Line Items] | ||||
| Common stock excluded from calculation of diluted earnings per share (shares) | 0.6 | |||
| Common Stock | ||||
| Equity, Class of Treasury Stock [Line Items] | ||||
| Repurchase and retirement of common stock (shares) | 0.1 | 0.2 | 0.1 | |
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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount remaining authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Number of shares that have been repurchased and retired during the period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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