Income Taxes - Reconciliation of U.S. Statutory Income Tax Rate to Our Effective Tax Rate (Detail)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
U.S. statutory income tax rate	21.00%	21.00%	21.00%
State taxes, net of federal deduction	2.40%	0.80%	(2.50%)
Tax impact of foreign operations, including U.S. taxes on international income and foreign tax credits	14.90%	(10.20%)	54.30%
Change in valuation allowance	1.50%	1.50%	(4.90%)
Non-deductible expenses	(2.00%)	0.40%	1.70%
Goodwill impairment	(46.10%)		(75.20%)
Tax rate change	3.80%	0.60%	(12.20%)
Tax benefit relating to foreign derived intangible income and U.S. manufacturer’s deduction	5.80%	4.50%	(0.20%)
R&D tax credit	2.10%	(1.20%)	6.00%
Share-based compensation	0.10%	(0.40%)	0.10%
Net uncertain tax positions, including interest and penalties	31.40%	1.90%	(25.50%)
U.S. tax reform		0.10%	(3.10%)
Switzerland tax reform and certain restructuring transactions	15.70%	(34.80%)
Other	(0.70%)	(0.10%)	0.60%
Effective income tax rate	49.90%	(24.90%)	(39.90%)