Accounting Policies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Variable Interest Entity [Line Items]
Operating lease liability	$ 228		$ 232
Operating lease liability, current, Statement of Financial Position	Other Liabilities		Other Liabilities
Operating lease right-of-use asset	$ 207		$ 212
Operating lease, right-of-use asset, Statement of Financial Position	Other Assets		Other Assets
Weighted average common shares adjustment related to stock-based compensation (shares)		100,000
Anti-dilutive potential common shares related to stock-based compensation plans (shares)	0	0
Maturities of short term investments	3 months
Maximum
Variable Interest Entity [Line Items]
Weighted average common shares adjustment related to stock-based compensation (shares)	100,000