Summary of Significant Accounting Policies - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Basic earnings per share:
Net income	$ 1,284	$ 1,197	$ 612
Weighted average common shares outstanding (in shares)	386	383	381
Basic earnings per share (in dollars per share)	$ 3.33	$ 3.12	$ 1.61
Diluted earnings per share:
Net income	$ 1,284	$ 1,197	$ 612
Income impact of assumed conversions	1	1	1
Net income available to common shareholders and assumed conversions	$ 1,285	$ 1,198	$ 613
Weighted average common shares outstanding (in shares)	386	383	381
Incremental shares from assumed conversions (in shares)	2	2	2
Adjusted weighted average shares - diluted (in shares)	388	385	383
Diluted earnings per share (in dollars per share)	$ 3.31	$ 3.11	$ 1.60