Long-Term Debt (Details) - USD ($) $ in Thousands		Sep. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Total long-term debt	[1]	$ 3,449,332	$ 3,817,157
Current portion of long-term debt		400,892	674,994
Long-term debt		3,048,440	3,142,163
Term loan facilities | September 2015 Term Loan Agreement
Debt Instrument [Line Items]
Total long-term debt		866,992	1,247,167
Senior Notes | 1.875% Senior Notes
Debt Instrument [Line Items]
Total long-term debt		776,784	759,151
Senior Notes | 3.00% Senior Notes
Debt Instrument [Line Items]
Total long-term debt		248,604	248,274
Senior Notes | 4.15% Senior Notes
Debt Instrument [Line Items]
Total long-term debt		421,019	420,654
Senior Notes | 4.50% Senior Notes
Debt Instrument [Line Items]
Total long-term debt		347,469	347,018
Senior Notes | 5.45% Senior Notes
Debt Instrument [Line Items]
Total long-term debt		345,648	345,532
Commercial Paper
Debt Instrument [Line Items]
Total long-term debt		400,851	351,349
Variable-rate foreign bank loans
Debt Instrument [Line Items]
Total long-term debt		41,935	77,452
Variable-rate domestic bank loans
Debt Instrument [Line Items]
Total long-term debt		0	20,479
Other long-term debt
Debt Instrument [Line Items]
Total long-term debt		$ 30	$ 81

[1] As of September 30, 2016 and December 31, 2015, $16.5 million and $20.3 million, respectively, of long-term debt was classified as Liabilities held for sale in the condensed consolidated balance sheets. See Note 3, “Divestitures,” for additional information.