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Consolidated Statements of Comprehensive Income (Loss) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Statement of Comprehensive Income [Abstract]      
Net (loss) income $ (67) $ 125 $ (214)
Other comprehensive income (loss):      
Foreign currency translation adjustments 16 (7) (36)
Securities:      
Reclassification of gain to net income (loss) 0 0 (26)
Unrealized loss on securities, before tax 0 0 (7)
Tax impact on securities 0 0 2
Net change in securities 0 0 (31)
Defined benefit plans:      
Reclassification of loss to net income (loss) 4 3 3
Defined benefit plan adjustment, before tax (6) (12) (9)
Defined benefit plan adjustment, tax portion 1 3 1
Defined benefit plan adjustment, net of tax (1) (6) (5)
Other comprehensive income (loss) 15 (13) (72)
Comprehensive (loss) income $ (52) $ 112 $ (286)