Significant Accounting Policies Level 4 (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Cost of Goods Sold	$ 905	$ 1,188	$ 2,753	$ 3,487
Selling, General and Administrative Expense	71	82	229	269
Income tax expense	1	2	28	17
Net income	7	(26)	(29)	(66)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax	0	0	0	0
Increase (Decrease) in Inventories			14	(92)
Increase (Decrease) in Income Taxes Payable			10	(4)
Increase (Decrease) in Other Operating Liabilities			6	(38)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	(17)	(66)	(102)	(107)
Scenario, Previously Reported [Member]
Cost of Goods Sold	907		2,757	3,491
Selling, General and Administrative Expense	74	84	238	275
Income tax expense				23
Net income	2	(28)	(42)	(82)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax	5	1	16	6
Increase (Decrease) in Inventories			(12)	90
Increase (Decrease) in Income Taxes Payable				3
Increase (Decrease) in Other Operating Liabilities			21	(31)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		(67)	(99)	(117)
Scenario, Adjustment [Member]
Cost of Goods Sold	(2)		(4)	(4)
Selling, General and Administrative Expense	(3)	(2)	(9)	(6)
Income tax expense				(6)
Net income	5	2	13	16
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax	(5)	(1)	(16)	(6)
Increase (Decrease) in Inventories			(2)	2
Increase (Decrease) in Income Taxes Payable				(7)
Increase (Decrease) in Other Operating Liabilities			(15)	(7)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent		$ 1	(3)	$ 10
Equity Method Investee [Member]
settlement discounts issued to related party	$ 1		$ 4