Income Taxes (Reconciliation From Statutory Federal Income Tax Rate To Effective Income Tax Rate) (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Statutory federal income tax rate	21.00%	21.00%	21.00%
State tax on commercial operations, net of federal benefits	0.50%	0.10%	0.70%
Global impact of international operations	(1.00%)	1.90%	0.20%
Foreign derived intangible income	(1.50%)	(2.10%)	(1.40%)
Equity-based compensation	(0.10%)	(0.20%)	(1.10%)
Domestic tax credits	(2.00%)	(4.60%)	(2.00%)
Other, net	(1.00%)	(0.80%)	(0.30%)
Effective income tax rate	15.90%	15.30%	17.10%