Loss per Share (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Feb. 28, 2024	Feb. 28, 2022
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Anti-dilutive stock options or restricted stock awards excluded from computation of earnings per share	27,600,000	23,200,000	27,400,000	22,700,000
Dividends paid (in dollars per share)	$ 0.12	$ 0.12	$ 0.24	$ 0.24
Share repurchase program, authorized amount					$ 2,000,000,000	$ 1,000,000,000
Treasury Stock, Shares, Acquired	20,200,000		38,900,000	19,200,000
Payments for Repurchase of Common Stock	$ 175,000,000		$ 350,400,000	$ 250,000,000.0
Cumulative shares repurchased (in shares)	79,300,000		79,300,000
Cumulative payments for repurchase of common stock	$ 850,400,000