Unaudited Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2021		Dec. 31, 2020	Mar. 31, 2020		Dec. 31, 2019
Statement of Cash Flows [Abstract]
Cash and cash equivalents	$ 674		$ 695	$ 579
Restricted cash	261		218	266
Total cash, cash equivalents, and restricted cash	$ 935	[1]	$ 913	$ 845	[1]	$ 612

[1] The following table provides a reconciliation of cash, cash equivalents and restricted cash to amounts reported within the condensed consolidated balance sheets. March 31, 2021March 31, 2020Cash and cash equivalents$674 $579 Restricted cash261 266 Total cash, cash equivalents, and restricted cash$935 $845