Debt - Schedule of Debt Maturities (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Debt Instrument [Line Items]
Total	$ 4,595,174
Less than 1 Year	45,261
1-3 Years	3,175,890
3-5 Years	1,074,023
After 5 Years	300,000
Senior Notes - 2020 [Member]
Debt Instrument [Line Items]
Total	300,000
Less than 1 Year	0
1-3 Years	0
3-5 Years	300,000
After 5 Years	0
Senior Notes, Euro Notes, 2021 [Member]
Debt Instrument [Line Items]
Total	340,590
Less than 1 Year	0
1-3 Years	0
3-5 Years	340,590
After 5 Years	0
Senior Notes - 2023 [Member]
Debt Instrument [Line Items]
Total	300,000
Less than 1 Year	0
1-3 Years	0
3-5 Years	0
After 5 Years	300,000
Senior Notes, Euro Notes, 2024 [Member]
Debt Instrument [Line Items]
Total	567,650
Less than 1 Year	0
1-3 Years	567,650
3-5 Years	0
After 5 Years	0
Senior Notes, Euro Notes, 2026 [Member]
Debt Instrument [Line Items]
Total	908,240
Less than 1 Year	0
1-3 Years	908,240
3-5 Years	0
After 5 Years	0
Senior Notes - 2028 [Member]
Debt Instrument [Line Items]
Total	400,000
Less than 1 Year	0
1-3 Years	400,000
3-5 Years	0
After 5 Years	0
Senior notes - 2047 [Member]
Debt Instrument [Line Items]
Total	500,000
Less than 1 Year	0
1-3 Years	500,000
3-5 Years	0
After 5 Years	0
Senior Notes - 2048 [Member]
Debt Instrument [Line Items]
Total	800,000
Less than 1 Year	0
1-3 Years	800,000
3-5 Years	0
After 5 Years	0
Term Loan Credit Agreement [Member]
Debt Instrument [Line Items]
Total	350,000
Less than 1 Year	0
1-3 Years	0
3-5 Years	350,000
After 5 Years	0
Amortizing Note [Member]
Debt Instrument [Line Items]
Total	128,694
Less than 1 Year	45,261
1-3 Years	0
3-5 Years	83,433
After 5 Years	$ 0