Stock-Based Compensation - Stock-Based Compensation (Details) - Restricted Stock and Unit Awards - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 47	$ 33
Restricted stock and unit awards granted in period (shares)	0.3
Weighted-average grant fate fair value (USD per share)	$ 527.77
Unrecognized compensation expense	$ 307
Weighted average recognition period	1 year 8 months 12 days