Supplemental Cash Flow Information - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Supplemental Cash Flow Information [Abstract]
Transfer from investments	$ 15	$ 34
Non-cash investing activities, right-of-use asset, property and equipment obtained		18
Non-cash financing activities related to the issuance of shares for vested restricted stock units	24	26
Operating lease, payments	27	30
Right-of-use asset obtained in exchange for operating lease liability	$ 13	$ 10