|
Stock-Based Compensation (Details) (USD $)
In Millions, unless otherwise specified
|
3 Months Ended |
|
Mar. 31, 2015
|
Mar. 31, 2014
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
| Allocated Share-based Compensation Expense |
$ 48.9 |
$ 38.3 |
| Stock-based compensation expense |
48.9 |
38.3 |
| Restricted Stock Units (RSUs) [Member] |
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |
3 years |
|
| Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized |
145.0 |
|
| Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition |
29 months |
|
| Shareholder Value Awards [Member] |
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |
3 years |
|
| Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized |
103.3 |
|
| Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition |
26 months |
|
| Performance Shares [Member] |
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |
2 years |
|
| Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized |
$ 115.5 |
|
| Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition |
19 months |
|