Income Taxes (Schedule of Reconciliation of Unrecognized Tax Benefits Included in Uncertain Tax Positions) (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits		$ 158	$ 228	$ 244	$ 114	$ 158	$ 228
As of the beginning of the year		158	228	244
Increases in tax positions for the current year		9	13	7
Increases in tax positions for prior years(1)	[1]	11	76	24
Decreases in tax positions for prior years		(9)	(126)	(46)
Decreases due to settlements		(55)	(33)	(1)
As of the end of the year		114	158	228
Total uncertain tax positions that if recognized would impact the effective tax rate					87	144	245
Total amount of interest expense (benefit) and penalties recognized in the consolidated statements of operations(2)	[2]	(16)	(12)	$ 2
Total amount of interest expense and penalties recognized in the consolidated balance sheets					26	$ 43	$ 67
Decreases in interest and penalties due to settlements		(1)	$ (12)
SO.F.TER. S.p.A. [Member]
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits		19			$ 19
As of the end of the year		$ 19

[1] Includes uncertain tax positions related to the SOFTER acquisition (Note 4) of $19 million for the year ended December 31, 2016.

[2] This amount reflects interest on uncertain tax positions and release of certain tax positions as a result of audit closure that was reflected in the consolidated statements of operations. In addition, for the years ended December 31, 2016 and 2015, the Company also paid an additional $1 million and $12 million, respectively, of previously accrued amounts due to settlements of tax examinations.