Shareholders' Equity - Narrative (Details) - USD ($) shares in Millions, $ in Millions |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2019 |
Mar. 31, 2018 |
Mar. 31, 2019 |
Mar. 31, 2018 |
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| Class of Stock [Line Items] | ||||
| Cash dividends paid on common stock | $ 26.2 | $ 26.2 | ||
| Treasury Stock, Value, Acquired, Cost Method | $ 23.7 | 38.9 | ||
| Amount of shares repurchased | $ 0.0 | $ 38.9 | ||
| Treasury Stock | ||||
| Class of Stock [Line Items] | ||||
| Treasury Stock, Shares, Acquired | 0.5 | 0.9 | ||
| Treasury Stock, Value, Acquired, Cost Method | $ 23.7 | $ 38.9 | ||
| Common stock, shares issued | 0.1 | 0.1 | 0.3 | 0.4 |
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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 The cash outflow to reacquire common stock during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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 of shares (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of any shares forfeited. Shares issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans. 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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