Taxes on Income (Loss) (Schedule of Components of income Before Income Taxes) (Details) - USD ($) $ in Millions |
3 Months Ended | 12 Months Ended | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2014 |
Sep. 30, 2014 |
Jun. 30, 2014 |
Mar. 31, 2014 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest [Abstract] | |||||||||||
Domestic | $ 27 | $ (193) | $ 497 | ||||||||
Foreign | 314 | 170 | 106 | ||||||||
Income (loss) before income taxes | $ 49 | $ 307 | $ 71 | $ (86) | $ (284) | $ 203 | $ 121 | $ (62) | $ 341 | $ (23) | $ 603 |