Income Taxes (Components of Income Tax Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income components:
Domestic	$ 80	$ 116	$ 118
Foreign	260	287	303
Income before taxes	340	403	421
Current:
Domestic – federal	19	32	44
Domestic – state and local	5	6	7
Foreign	42	34	62
Total Current	66	72	113
Deferred:
Domestic – federal	19	1	(14)
Domestic – state and local	1	1	0
Foreign	(6)	(11)	(15)
Total Deferred	14	(9)	(29)
Total income tax provision	$ 80	$ 63	$ 84
Effective income tax rate	23.50%	15.60%	19.80%