Supplemental Cash Flow Information - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Supplemental Cash Flow Information [Abstract]
Transfer from investments	$ 111	$ 31
Non-cash financing activities related to the issuance of shares for vested restricted stock units	65	52
Operating lease, payments	127	137
ROU asset obtained in exchange for operating lease liability	$ 17	$ 96