|
Derivative Instruments and Hedging Activities (Foreign Currency Option Contracts) (Details) (Designated as hedging instruments, USD $)
In Millions, unless otherwise specified |
Mar. 31, 2015
|
Dec. 31, 2014
|
|---|---|---|
| Derivative [Line Items] | ||
| Notional amount | $ 1,250.0 | |
| Foreign currency forward contracts | ||
| Derivative [Line Items] | ||
| Notional amount | 4,170.6 | 4,284.1 |
| Foreign currency forward contracts | Purchased Put | ||
| Derivative [Line Items] | ||
| Notional amount | 207.9 | 152.6 |
| Foreign currency forward contracts | Written Call | ||
| Derivative [Line Items] | ||
| Notional amount | $ 220.5 | $ 160.9 |