Common Share Repurchases (Details) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2023 USD ($) $ / shares shares
Treasury Stock Transactions, Excluding Value of Shares Reissued [Abstract]
Number of shares repurchased under share repurchase authorization (in shares) | shares	2.2
Cost of shares repurchased under share repurchase authorization	$ 400
Average cost per share repurchased under share repurchase authorization (in dollars per share) | $ / shares	$ 183.26
Number of shares acquired to cover tax withholding costs and exercise costs (in shares) | shares	0.3
Cost of shares acquired to cover tax withholding costs and exercise costs	$ 62
Remaining capacity under share repurchase authorization	$ 1,600