Consolidating Financial Information - Narrative (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Mar. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Decrease in total assets	$ (17,646,000,000)		$ (17,646,000,000)			$ (16,511,000,000)
Decrease in total liabilities	(12,501,000,000)		(12,501,000,000)			(11,786,000,000)
Decrease in total shareholders' equity	(5,145,000,000)	$ (4,408,000,000)	(5,145,000,000)	$ (4,408,000,000)		(4,725,000,000)	$ (4,142,000,000)
Net income	147,000,000	202,000,000	313,000,000	386,000,000
Net Sales	3,686,000,000	3,879,000,000	7,385,000,000	7,570,000,000
Cost of goods sold	2,792,000,000	2,813,000,000	5,557,000,000	5,514,000,000
8.75% due 2020 | Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount	$ 282,000,000		$ 282,000,000
Interest rate, stated percentage	8.75%		8.75%
5.125% due 2023 | Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount	$ 1,000,000,000		$ 1,000,000,000
Interest rate, stated percentage	5.125%		5.125%
5% due 2026 | Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount	$ 900,000,000		$ 900,000,000
Interest rate, stated percentage	5.00%		5.00%
4.875% due 2027 | Senior Notes
Debt Instrument [Line Items]
Debt instrument, face amount	$ 700,000,000		$ 700,000,000		$ 700,000,000
Interest rate, stated percentage	4.875%		4.875%		4.875%
Reportable Legal Entities | Parent Company
Debt Instrument [Line Items]
Decrease in total assets	$ (11,870,000,000)		$ (11,870,000,000)			(11,477,000,000)
Decrease in total liabilities	(6,961,000,000)		(6,961,000,000)			(6,970,000,000)
Decrease in total shareholders' equity	(4,909,000,000)		(4,909,000,000)			(4,507,000,000)
Net income	147,000,000	202,000,000	313,000,000	386,000,000
Net Sales	1,863,000,000	1,889,000,000	3,630,000,000	3,676,000,000
Cost of goods sold	1,462,000,000	1,407,000,000	2,842,000,000	2,737,000,000
Reportable Legal Entities | Parent Company | Restatement Adjustment
Debt Instrument [Line Items]
Decrease in total assets						113,000,000
Decrease in total liabilities						113,000,000
Reportable Legal Entities | Guarantor Subsidiaries
Debt Instrument [Line Items]
Decrease in total assets	(1,461,000,000)		(1,461,000,000)			(1,399,000,000)
Decrease in total liabilities	(286,000,000)		(286,000,000)			(268,000,000)
Decrease in total shareholders' equity	(1,175,000,000)		(1,175,000,000)			(1,131,000,000)
Net income	12,000,000	6,000,000	36,000,000	34,000,000
Net Sales	290,000,000	351,000,000	589,000,000	665,000,000
Cost of goods sold	286,000,000	329,000,000	560,000,000	624,000,000
Reportable Legal Entities | Guarantor Subsidiaries | Restatement Adjustment
Debt Instrument [Line Items]
Decrease in total assets						358,000,000
Decrease in total liabilities						46,000,000
Decrease in total shareholders' equity						312,000,000
Net income		2,000,000		8,000,000
Reportable Legal Entities | Non-Guarantor Subsidiaries
Debt Instrument [Line Items]
Decrease in total assets	(9,895,000,000)		(9,895,000,000)			(8,989,000,000)
Decrease in total liabilities	(5,683,000,000)		(5,683,000,000)			(5,097,000,000)
Decrease in total shareholders' equity	(4,212,000,000)		(4,212,000,000)			(3,892,000,000)
Net income	85,000,000	112,000,000	192,000,000	201,000,000
Net Sales	2,316,000,000	2,347,000,000	4,618,000,000	4,603,000,000
Cost of goods sold	1,842,000,000	1,797,000,000	3,638,000,000	3,574,000,000
Reportable Legal Entities | Non-Guarantor Subsidiaries | Restatement Adjustment
Debt Instrument [Line Items]
Net Sales		322,000,000		614,000,000
Cost of goods sold		322,000,000		614,000,000
Consolidating Entries and Eliminations
Debt Instrument [Line Items]
Decrease in total assets	5,580,000,000		5,580,000,000			5,354,000,000
Decrease in total liabilities	429,000,000		429,000,000			549,000,000
Decrease in total shareholders' equity	5,151,000,000		5,151,000,000			$ 4,805,000,000
Net income	(97,000,000)	(118,000,000)	(228,000,000)	(235,000,000)
Net Sales	(783,000,000)	(708,000,000)	(1,452,000,000)	(1,374,000,000)
Cost of goods sold	$ (798,000,000)	(720,000,000)	$ (1,483,000,000)	(1,421,000,000)
Consolidating Entries and Eliminations | Restatement Adjustment
Debt Instrument [Line Items]
Net Sales		(322,000,000)		(614,000,000)
Cost of goods sold		$ (322,000,000)		$ (614,000,000)