Income Taxes - Effective Income Tax Rate Reconciliation (Details)		3 Months Ended			12 Months Ended
		Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
U.S. federal statutory income tax rate					35.00%	35.00%	35.00%
State income taxes, net of federal benefit					1.00%	2.00%	1.40%
Research tax credits					(0.70%)	(1.40%)	(1.10%)
Share-based compensation					1.00%	2.20%	6.50%
Excess tax benefits related to share-based compensation	[1]				(7.00%)	(0.00%)	(0.00%)
Effect of non-U.S. operations					(12.80%)	(0.90%)	(3.60%)
Other					1.90%	3.50%	1.90%
Effective tax rate		17.00%	17.00%	16.00%	18.40%	40.40%	40.10%

[1] Due to the adoption of ASU 2016-09, excess tax benefits from share-based award activity for the year ended December 31, 2016 are reflected as a reduction of the provision for income taxes, whereas they previously were recognized in equity. See Note 1 in these notes to the consolidated financial statements for additional information related to this adoption.