Shareholders' Equity - Narrative (Details) - USD ($) shares in Millions, $ in Millions |
3 Months Ended | |
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Dec. 31, 2019 |
Dec. 31, 2018 |
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| Class of Stock [Line Items] | ||
| Cash dividends paid on common stock | $ 15.8 | $ 13.1 |
| Treasury Stock, Value, Acquired, Cost Method | $ 371.3 | |
| Treasury Stock | ||
| Class of Stock [Line Items] | ||
| Treasury Stock, Shares, Acquired | 0.0 | |
| Treasury Stock, Value, Acquired, Cost Method | $ 0.0 | |
| Common stock, shares issued | 0.1 | 0.2 |
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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. No definition available.
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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of shares that have been repurchased during the period and are being held in treasury. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Details
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