Earnings (Loss) per Ordinary Share (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		9 Months Ended		14 Months Ended
	Mar. 15, 2024	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Feb. 28, 2024	Feb. 28, 2022
Earnings Per Share [Abstract]
Diluted (in USD per share)		$ 0.08	$ 0.27	$ (0.10)	$ 0.68
Anti-dilutive stock options or restricted stock awards excluded from computation of earnings per share		9,100,000	12,200,000	20,500,000	16,800,000
Dividends paid (in dollars per share)		$ 0.12	$ 0.12	$ 0.36	$ 0.36
Share repurchase program, authorized amount						$ 2,000.0	$ 1,000.0
Treasury Stock, Shares, Acquired				19,200,000	21,200,000
Payments for Repurchase of Common Stock				$ 250.0	$ 250.0
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Share repurchase program, authorized amount						2,000.0	$ 1,000.0
Stock Repurchased During Period, Value						$ 500.0
Dividends paid (in dollars per share)		$ 0.12	$ 0.12	$ 0.36	$ 0.36
Idorsia Pharmaceuticals Ltd.
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Business Combination, Price of Acquisition, Expected	$ 350.0