Supplemental Cash Flow Information - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Supplemental Cash Flow Information [Abstract]
Transfer from investments	$ 34	$ 36
Non-cash investing activities, right-of-use asset, property and equipment obtained	18
Noncash investing activities, right-of-use asset obtained in exchange for operating lease liability		17
Non-cash investing activities, debt assumed		51
Non-cash financing activities related to the issuance of shares for vested restricted stock units	26	35
Operating lease, payments	30	33
Right-of-use asset obtained in exchange for operating lease liability	$ 10	$ 4