General - Cash, Cash Equivalents and Restricted Cash Equivalents (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Cash and cash equivalents	$ 1,909	$ 2,764	$ 2,270
Restricted cash and restricted cash equivalents included in other current assets	25		183
Restricted cash and restricted cash equivalents included in long-term receivables and other assets, net	17		15
Cash, cash equivalents, restricted cash and restricted cash equivalents	$ 1,951	$ 2,803	$ 2,468	$ 2,194