Taxes on Income (Loss) (Schedule of Total Provision for Taxes on Income) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal	$ 6	$ 1	$ (7)
Foreign	58	45	60
State and local	1	7	21
Total current	65	53	74
Deferred:
Federal	40	(19)	197
Foreign	(42)	9	16
State and local	5	16	14
Total deferred	3	6	227
Total provision	$ 68	$ 59	$ 301