v3.7.0.1
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (PARENTHETICAL) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)        
Unrealized gains (losses) on designated cash flow and net investment hedges, tax (expense) benefit $ 0 $ 0 $ 0 $ 0
Unrealized gains (losses) on investments, tax (expense) benefit 1 0 1 0
Reclassification of realized net losses (gains) to net income, tax expense (benefit) $ 0 $ 0 $ 0 $ 0