Quarterly report pursuant to Section 13 or 15(d)

Consolidated Statements of Cash Flows (Parenthetical)

v3.19.1
Consolidated Statements of Cash Flows (Parenthetical) - USD ($)
$ in Millions
Mar. 31, 2019
Dec. 31, 2018
Mar. 31, 2018
Dec. 31, 2017
Statement of Cash Flows [Abstract]        
Cash and cash equivalents $ 62 $ 54 $ 79 $ 69
Restricted cash included in Other long-term assets 11 11 10 10
Cash, cash equivalents and restricted cash at end of period $ 73 $ 65 $ 89 $ 79