Income Taxes (Reconciliation of the U.S. Federal Statutory Tax Rate to the Company's Effective Income Tax Rate) (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
U.S. federal statutory tax rate	21.00%	21.00%	21.00%
State taxes, net of federal benefit	1.80%	3.00%	2.90%
Non-U.S. local income taxes	3.20%	4.40%	3.30%
U.S. permanent adjustments	0.10%	0.00%	(0.30%)
Foreign permanent adjustments	0.20%	0.40%	(0.40%)
Foreign rate differential	0.60%	0.50%	0.20%
Net U.S. tax on non-U.S. earnings and foreign withholdings	1.20%	0.30%	5.70%
Provision for/resolution of tax audits and contingencies, net	0.50%	(1.60%)	1.10%
Research and development and other tax credits	(0.40%)	(0.30%)	(0.10%)
Provision for/adjustment to beginning of year valuation allowances	0.20%	(0.30%)	(4.20%)
Enacted tax legislation and rate change	0.00%	(0.10%)	1.80%
Tax effect of non-deductible foreign exchange loss on intercompany loan	2.70%	0.00%	0.00%
Return to provision and other adjustments	(1.00%)	(2.10%)	(3.00%)
Effective income tax rate	30.10%	25.20%	28.00%