Stockholders' (Deficit) Equity (Narrative) (Details) - USD ($) shares in Millions	1 Months Ended
	Feb. 10, 2022	Feb. 11, 2021	Dec. 31, 2021
Treasury Stock Repurchase Programs [Line Items]
Treasury Stock Shares Repurchased			243.7
Additional share repurchase amount authorized	$ 705,400,000	$ 747,000,000
Stock Repurchase Program, Authorized Amount	1,000,000,000	1,000,000,000
Remaining common stock available for repurchase	$ 294,600,000	$ 253,000,000
Payments for Repurchase of Common Stock			$ 11,700,000,000
Share Buyback Program [Member]
Treasury Stock Repurchase Programs [Line Items]
Remaining common stock available for repurchase			$ 382,600,000