Cash and Cash Equivalents and Restricted Cash and Cash Equivalents - PAC (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2020
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 1,777	$ 1,096
Restricted cash and cash equivalents, current	262	127
Restricted cash, cash equivalents and investments, noncurrent	19	21
Total cash and cash equivalents and restricted cash and cash equivalents	2,058	1,244	$ 2,942	$ 1,445
PAC
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	219	179
Restricted cash and cash equivalents, current	33	4
Restricted cash, cash equivalents and investments, noncurrent	3	3
Total cash and cash equivalents and restricted cash and cash equivalents	$ 255	$ 186	$ 899	$ 19