Restructuring Charges and Asset Impairments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Restructuring Reserve [Roll Forward]
Cash payments	$ (62,086)	$ (56,162)	$ (59,520)
Proceeds from sale of former corporate world headquarters building	$ 39,000
Loss on sale of former corporate world headquarters building		5,000
International
Restructuring Reserve [Roll Forward]
Restructuring reserve, payment period	24 months
Minimum
Restructuring Reserve [Roll Forward]
Restructuring reserve, payment period	12 months
Maximum
Restructuring Reserve [Roll Forward]
Restructuring reserve, payment period	24 months
Operational Excellence
Restructuring Reserve [Roll Forward]
Balance at	$ 90,179	66,572
Expenses, net	19,329	79,769
Cash payments	(62,086)	(56,162)
Balance at	47,422	90,179	66,572
Operational Excellence | Severance and benefits costs
Restructuring Reserve [Roll Forward]
Balance at	81,836	58,558
Expenses, net	19,078	74,325
Cash payments	(57,214)	(51,047)
Balance at	43,700	81,836	58,558
Operational Excellence | Other exit costs
Restructuring Reserve [Roll Forward]
Balance at	8,343	8,014
Expenses, net	251	5,444
Cash payments	(4,872)	(5,115)
Balance at	$ 3,722	$ 8,343	$ 8,014