Supplemental Cash Flow Information - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Supplemental Cash Flow Information [Abstract]
Transfer from investments	$ 185	$ 51	$ 55
Non-cash investing activities	37
Non-cash financing activities related to the issuance of shares for vested restricted stock units	65	53	56
Operating lease, payments	163	181	156
Right-of-use asset obtained in exchange for operating lease liability	$ 26	$ 98	$ 51