Cash and Cash Equivalents and Restricted Cash and Cash Equivalents - NPC (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
Total cash and cash equivalents and restricted cash and cash equivalents	2,058	1,244	$ 2,942	$ 1,445
NPC
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	73	33
Restricted cash and cash equivalents, current	13	12
Total cash and cash equivalents and restricted cash and cash equivalents	$ 86	$ 45	$ 94	$ 36