Shareholders' Equity - Shares Repurchased (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended					4 Months Ended	12 Months Ended
	May 08, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	May 08, 2025	Dec. 31, 2024
Equity, Class of Treasury Stock [Line Items]
Repurchases of common stock		$ 120				$ 129
Common Shares Outstanding
Equity, Class of Treasury Stock [Line Items]
Shares repurchased (in shares)		1,335,228	1,054,727	1,658,441	1,928,328	1,539,278		6,180,774
Repurchases of common stock		$ 120	$ 90	$ 131	$ 152	$ 129		$ 502
Average price paid per share (in dollars per share)		$ 89.72	$ 86.11	$ 78.87	$ 78.50	$ 84.07		$ 81.28
Common Shares Outstanding | Subsequent Event
Equity, Class of Treasury Stock [Line Items]
Remaining capacity of shares repurchase program	$ 181						$ 181
Shares repurchased (in shares)	603,103						1,938,331
Repurchases of common stock	$ 51						$ 171
Average price paid per share (in dollars per share)	$ 84.43						$ 88.08