Restructuring Charges and Asset Impairments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Reserve
Cash payments	$ (64,930)	$ (62,086)	$ (56,162)
Severance costs	$ 2,000	1,000
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
Restructuring reserve, payment period	24 months
Facility closing
Restructuring Reserve
Loss on sale of facility	$ 5,000
Asset impairment charges	$ 4,000
Minimum
Restructuring Reserve
Restructuring reserve, payment period	12 months
Maximum
Restructuring Reserve
Restructuring reserve, payment period	24 months
Operational Excellence
Restructuring Reserve
Balance at	$ 47,422	90,179
Expenses, net	46,165	19,329
Cash payments	(64,930)	(62,086)
Balance at	28,657	47,422	90,179
Operational Excellence | Severance and benefits costs
Restructuring Reserve
Balance at	43,700	81,836
Expenses, net	44,510	19,078
Cash payments	(59,834)	(57,214)
Balance at	28,376	43,700	81,836
Operational Excellence | Other exit costs
Restructuring Reserve
Balance at	3,722	8,343
Expenses, net	1,655	251
Cash payments	(5,096)	(4,872)
Balance at	$ 281	$ 3,722	$ 8,343