Quarterly report pursuant to Section 13 or 15(d)

CASH AND INVESTMENTS - Cash Details (Details)

v3.19.3
CASH AND INVESTMENTS - Cash Details (Details) - USD ($)
$ in Millions
Sep. 30, 2019
Dec. 31, 2018
Sep. 30, 2018
Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]        
Cash and cash equivalents $ 4,040 $ 4,225 $ 4,097  
Restricted cash 145 142 278  
Total cash, cash equivalents and restricted cash $ 4,185 $ 4,367 $ 4,375 $ 3,769