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Capital Stock (Shares Repurchased) (Details) - USD ($) shares in Millions, $ in Millions | 12 Months Ended | 132 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2016 | May 24, 2018 | Feb. 02, 2016 | Feb. 01, 2016
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Share repurchase plan, authorized amount |  |  | $ 468.0 | $ 300.0
Shares Repurchased (in shares) | 3.6 |  |  |
Aggregate cost of shares repurchased | $ 73.2 |  |  |
Subsequent Event |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Aggregate cost of shares repurchased |  | $ 283.2 |  |
Share repurchase plan, remaining capacity |  | $ 184.7 |  |

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- Definition Number of shares that have been repurchased during the period. + References No definition available. + Details
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- Definition Equity impact of the cost of common shares repurchased during the period. + References No definition available. + Details
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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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- Details
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