|
Stockholders' Equity (Details) (USD $)
In Millions, except Share data, unless otherwise specified |
0 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
|
Feb. 21, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
|
|
| Preferred Stock, Dividend Rate, Percentage | $ 1.1625 | |||
| 4.5% Mandatory Convertible Preferred Stock, Par or Stated Value Per Share | $ 0.01 | $ 0.00 | ||
| Purchases of common stock, value | $ (99.5) | $ 36.0 | $ 303.4 | |
| Common Stock, Dividends, Per Share, Declared | $ 0.35 | $ 0.35 | ||
|
Common Stock
|
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| Purchases of common stock, shares | 1,429,461 | 700,070 | 7,377,803 | |
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Minimum [Member]
|
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| Conversion factor, Preferred Stock | 1.0811 | |||
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Maximum [Member]
|
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| Conversion factor, Preferred Stock | 1.3513 | |||