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Long-Term Debt - Additional Information (Details) - USD ($) | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2016 | Mar. 31, 2015 | Dec. 31, 2015 | Oct. 15, 2015
Debt Instrument [Line Items] |  |  |  |
Repayments of long-term debt | $ 331,595,000 | $ 1,326,263,000 |  |
Net investment hedge, (loss) gain | (9,524,000) | $ 54,046,000 |  |
364 Day Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal amount of debt |  |  |  | $ 300,000,000
Repayments of long-term debt | 300,000,000 |  |  |
Five Year Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal amount of debt |  |  |  | $ 950,000,000
Repayments of long-term debt | $ 31,000,000 |  |  |
Commercial Paper |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Weighted average interest rate | 1.31% |  |  |
Debt instrument maturity period | 21 days |  |  |
1.875% Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, interest rate | 1.875% |  | 1.875% |
Long-Term Debt Excluding Revolving Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Unamortized debt issuance costs |  |  | $ 17,100,000 |

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