Consolidated Statement Of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Operating activities [Abstract]
Net income	$ 103	$ 137
Depreciation	84	78
Amortization of intangibles	4	10
Amortization of deferred financing charges	2	2
Call premium on senior notes	12	2
Write off of deferred financing costs	5	1
Earnings of affiliates, net of dividends received	3	9
Stock compensation expense	7	8
Deferred income taxes	5	2
Pension contributions, net	(9)	(9)
Change in working capital	(65)	(108)
Other, net	7	(4)
Net cash provided by operating activities	158	128
Investing activities [Abstract]
Purchases of property, plant and equipment	(148)	(122)
Acquisition of business	(18)
Purchases of marketable securities	(25)	(26)
Proceeds from sales of marketable securities	4	12
Proceeds from maturities of marketable securities	22	16
Other	(3)	(3)
Net cash used in investing activities	(168)	(123)
Financing activities [Abstract]
Net change in short-term debt	12	3
Repayment of letters of credit		(4)
Proceeds from long-term debt	441	18
Repayment of long-term debt	(376)	(58)
Call premium on senior notes	(12)	(2)
Deferred financing payments	(10)
Dividends paid to common stockholders	(18)	(18)
Distributions to noncontrolling interests	(3)	(3)
Repurchases of common stock	(81)	(126)
Other		1
Net cash used in financing activities	(47)	(189)
Net decrease in cash and cash equivalents	(57)	(184)
Cash and cash equivalents - beginning of period	791	1,121
Effect of exchange rate changes on cash balances	11	(43)
Cash and cash equivalents – end of period	$ 745	$ 894