Earnings Per Share - Schedule of Computation (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share
income (loss)	$ 3,953.2	$ (535.6)	$ 3,619.6
Basic weighted-average common shares outstanding (in shares)	255.7	257.9	257.7
Effect of potentially dilutive securities:
Diluted weighted-average common shares outstanding (in shares)	258.0	257.9	260.5
Basic net income (loss) per common share (in dollars per share)	$ 15.46	$ (2.08)	$ 14.05
Diluted net income (loss) per common share (in dollars per share)	$ 15.32	$ (2.08)	$ 13.89
Restricted stock units (including PSUs)
Effect of potentially dilutive securities:
Share-based payment arrangements (in shares)	1.4	0.0	1.6
Stock options
Effect of potentially dilutive securities:
Share-based payment arrangements (in shares)	0.9	0.0	1.2