Supplemental Cash Flow Information - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Supplemental Cash Flow Information [Abstract]
Transfer from investments	$ 64	$ 185	$ 51
Non-cash investing activities	15
Non-cash investing activities, debt assumed	123
Non-cash financing activities related to the issuance of shares for vested restricted stock units	39	65	53
Operating lease, payments	130	163	181
Right-of-use asset obtained in exchange for operating lease liability	$ 30	$ 26	$ 98