|
Stockholders' Equity and Accumulated Other Comprehensive Income (Loss) (Narrative) (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified |
3 Months Ended | 30 Months Ended | 32 Months Ended | 35 Months Ended | |
|---|---|---|---|---|---|
|
Mar. 31, 2014
|
Dec. 31, 2013
|
Jan. 31, 2014
|
Mar. 31, 2014
|
Dec. 31, 2016
|
|
| Stock Repurchase Program, Authorized Amount | $ 300.0 | $ 300.0 | |||
| Stock Repurchase Program, Period in Force | 3 years | ||||
| Stock Repurchased and Retired During Period, Shares | 1.5 | 12.9 | 14.4 | ||
| Stock Repurchased and Retired During Period, Value | 44.4 | 257.1 | 301.5 | ||
| Stock Repurchase Program, Remaining Value Authorized to be Repurchased | 255.6 | ||||
| Accelerated Share Repurchases, Payment | $ 350.0 | ||||
| Accelerated Share Repurchases, Shares Repurchased | 2.0 | 9.4 | |||
| Accelerated Share Repurchases, Initial Price Paid Per Share | $ 29.69 | ||||