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Long-Term Debt - Additional Information (Details) $ in Thousands, € in Millions |  |  | 2 Months Ended | 3 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 21, 2018 USD ($) | Oct. 15, 2014 USD ($) | Feb. 28, 2017 USD ($) | Mar. 31, 2017 USD ($) | Mar. 31, 2017 EUR (€) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Sep. 14, 2015 USD ($) | Dec. 22, 2014 USD ($) | Dec. 18, 2014 | Dec. 08, 2014 EUR (€) | Nov. 24, 2014 USD ($) | Jan. 22, 2014 USD ($) payment | May 29, 2013 USD ($) | Dec. 10, 2010 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate annual maturities of long-term debt, 2019 |  |  |  |  |  | $ 307,300 |  |  |  |  |  |  |  |  |  |
Aggregate annual maturities of long-term debt, 2020 |  |  |  |  |  | 175,300 |  |  |  |  |  |  |  |  |  |
Aggregate annual maturities of long-term debt, 2021 |  |  |  |  |  | 447,000 |  |  |  |  |  |  |  |  |  |
Aggregate annual maturities of long-term debt, 2022 |  |  |  |  |  | 0 |  |  |  |  |  |  |  |  |  |
Aggregate annual maturities of long-term debt, 2023 |  |  |  |  |  | 7,200 |  |  |  |  |  |  |  |  |  |
Aggregate annual maturities of long-term debt, thereafter |  |  |  |  |  | 778,700 |  |  |  |  |  |  |  |  |  |
Repayments of long-term debt |  |  |  |  |  | 0 | $ 778,209 | $ 1,252,302 |  |  |  |  |  |  |  |
Repayments of debt premium |  |  |  | $ 45,200 |  |  |  |  |  |  |  |  |  |  |  |
Loss on early extinguishment of debt |  |  |  |  |  | 0 | $ 52,801 | 1,921 |  |  |  |  |  |  |  |
Interest rate cash flow hedge gain (loss) to be reclassified during next 12 months |  |  |  |  |  | 3,300 |  |  |  |  |  |  |  |  |  |
Revolving credit facility, remaining borrowings available |  |  |  |  |  | $ 693,400 |  |  |  |  |  |  |  |  |  |
September 2015 Term Loan Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of debt |  |  |  |  |  |  |  |  | $ 1,250,000 |  |  |  |  |  |  |
Repayments of long-term debt |  |  |  |  |  |  |  | 1,250,000 |  |  |  |  |  |  |  |
1.875% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of debt | € |  |  |  |  |  |  |  |  |  |  |  | € 700.0 |  |  |  |
Debt instrument, interest rate |  |  |  | 1.875% | 1.875% | 1.875% | 1.875% |  |  |  | 1.875% | 1.875% |  |  |  |
Interest rate of debt, effective percentage |  |  |  |  |  |  |  |  |  |  |  | 2.10% |  |  |  |
Other comprehensive (loss) income before reclassifications, before tax |  |  |  |  |  | $ 25,800 | $ (41,800) | $ 26,100 |  |  |  |  |  |  |  |
3.00% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of debt |  |  |  |  |  |  |  |  |  |  |  |  | $ 250,000 |  |  |
Debt instrument, interest rate |  |  |  | 3.00% | 3.00% | 3.00% | 3.00% |  |  |  |  |  | 3.00% |  |  |
Interest rate of debt, effective percentage |  |  |  |  |  |  |  |  |  |  |  |  | 3.18% |  |  |
4.15% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of debt |  |  |  |  |  |  |  |  |  |  |  |  | $ 425,000 |  |  |
Debt instrument, interest rate |  |  |  |  |  | 4.15% | 4.15% |  |  |  |  |  | 4.15% |  |  |
Interest rate of debt, effective percentage |  |  |  |  |  |  |  |  |  |  |  |  | 5.06% |  |  |
Number of semi annual coupon payments | payment |  |  |  |  |  |  |  |  |  |  |  |  |  | 20 |  |
4.50% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 350,000
Debt instrument, interest rate |  |  |  | 4.50% | 4.50% | 4.50% | 4.50% |  |  |  |  |  |  |  |  | 4.50%
Interest rate of debt, effective percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4.70%
5.45% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Principal amount of debt |  |  |  |  |  |  |  |  |  |  |  |  | $ 350,000 |  |  |
Debt instrument, interest rate |  |  |  |  |  | 5.45% | 5.45% |  |  |  |  |  | 5.45% |  |  |
Interest rate of debt, effective percentage |  |  |  |  |  |  |  |  |  |  |  |  | 5.50% |  |  |
Commercial Paper |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of long-term debt |  |  |  |  |  | $ 114,700 |  |  |  |  |  |  |  |  |  |
Commercial paper notes |  |  |  |  |  | $ 306,600 |  |  |  |  |  |  |  |  |  |
Weighted-average interest rate |  |  |  |  |  | 2.91% |  |  |  |  |  |  |  |  |  |
Debt instrument weighted average maturity period |  |  |  |  |  | 38 days |  |  |  |  |  |  |  |  |  |
Line of Credit |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity |  |  |  |  |  | $ 263,000 |  |  |  |  |  |  |  |  |  |
Borrowings outstanding under credit facility |  |  |  |  |  | $ 7,200 | $ 5,300 |  |  |  |  |  |  |  |  |
Average interest rate on borrowings |  |  |  |  |  | 0.69% | 1.26% | 0.94% |  |  |  |  |  |  |  |
Domestic Financial Institution Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings outstanding under credit facility |  |  |  |  |  | $ 0 | $ 0 |  |  |  |  |  |  |  |  |
Foreign Credit Line U S Dollar Euro Denominated Borrowings [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings outstanding under credit facility |  |  |  |  |  | 0 | 0 |  |  |  |  |  |  |  |  |
Other Foreign Credit Lines [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings outstanding under credit facility |  |  |  |  |  | $ 0 | $ 0 |  |  |  |  |  |  |  |  |
Maximum | Commercial Paper |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 750,000 |
Debt instrument, maturity term |  |  |  |  |  | 397 days |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate margin |  |  |  |  |  | 1.125% |  |  |  |  |  |  |  |  |  |
Revolving credit facility, maximum borrowing capacity | $ 1,000,000 |  |  |  |  |  |  |  |  | $ 1,000,000 |  |  |  |  |  |
Debt covenant ratio, maximum debt to EBITDA | 3.50 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt covenant | 50000000000.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate margin | 0.91% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revolving Credit Facility | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate margin | 1.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest Rate Swap | JP Morgan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Derivative, notional amount |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 325,000 |  |
Payment for settlement of interest rate swap |  | $ 33,400 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes | 1.875% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of long-term debt | € |  |  |  |  | € 307.0 |  |  |  |  |  |  |  |  |  |  |
Senior Notes | 3.00% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of long-term debt |  |  | $ 250,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Senior Notes | 4.50% Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of long-term debt |  |  |  | $ 174,700 |  |  |  |  |  |  |  |  |  |  |  |
London Interbank Offered Rate (LIBOR) | September 2015 Term Loan Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate margin |  |  |  |  |  | 1.375% |  |  |  |  |  |  |  |  |  |

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