Stockholders' Deficit Stockholders' (Deficit) Equity (Summary of Common Stock Repurchase) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended		12 Months Ended
	Feb. 10, 2022	Feb. 11, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Stockholders' Equity Note [Abstract]
Stock Repurchase Program, Authorized Amount	$ 1,000,000	$ 1,000,000
Additional share repurchase amount authorized	$ 705,400	$ 747,000
Treasury Stock Shares Repurchased			3,253	3,674	3,911
Treasury Stock Shares Repurchased For Tax Withholdings And Other			108	204	243
Treasury Stock, Shares, Acquired			3,361	3,878	4,154
Treasury Stock Shares Repurchased, Average Cost Per Share			$ 215.16	$ 200.06	$ 188.84
Treasury stock shares repurchased for tax withholdings and other, average cost per share			209.40	208.92	181.07
Treasury Stock Acquired, Average Cost Per Share			$ 214.97	$ 200.48	$ 188.39
Payments for Repurchase of Common Stock			$ 722,587	$ 777,454	$ 782,583