Fair Value Measurements Other Segments Fair Value (Details) - USD ($)		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Railcar and Food Packaging [Member] | Recurring measurement [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		$ 129,000,000	$ 139,000,000
Railcar and Food Packaging [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		79,000,000	88,000,000
Railcar and Food Packaging [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		29,000,000	30,000,000
Railcar and Food Packaging [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		21,000,000	21,000,000
Other Segments and Holding Company [Member] | Recurring measurement [Member]
Assets
Investments		475,000,000	241,000,000
Derivative contracts, at fair value(1)	[1]	45,000,000	47,000,000
Assets, Fair Value Disclosure		520,000,000	288,000,000
Liabilities
Other liabilities	[2]	3,000,000	50,000,000
Derivative contracts, at fair value(2)	[2]	3,000,000	2,000,000
Financial and Nonfinancial Liabilities, Fair Value Disclosure		6,000,000	52,000,000
Other Segments and Holding Company [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Investments		123,000,000	75,000,000
Derivative contracts, at fair value(1)	[1]	0	0
Assets, Fair Value Disclosure		123,000,000	75,000,000
Liabilities
Other liabilities	[2]	0	0
Derivative contracts, at fair value(2)	[2]	0	0
Financial and Nonfinancial Liabilities, Fair Value Disclosure		0	0
Other Segments and Holding Company [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Investments		115,000,000	3,000,000
Derivative contracts, at fair value(1)	[1]	45,000,000	47,000,000
Assets, Fair Value Disclosure		160,000,000	50,000,000
Liabilities
Other liabilities	[2]	3,000,000	50,000,000
Derivative contracts, at fair value(2)	[2]	3,000,000	2,000,000
Financial and Nonfinancial Liabilities, Fair Value Disclosure		6,000,000	52,000,000
Other Segments and Holding Company [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Investments		237,000,000	163,000,000
Derivative contracts, at fair value(1)	[1]	0	0
Assets, Fair Value Disclosure		237,000,000	163,000,000
Liabilities
Other liabilities	[2]	0	0
Derivative contracts, at fair value(2)	[2]	0	0
Financial and Nonfinancial Liabilities, Fair Value Disclosure		0	0
United States Plans | Automotive Segment [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		870,000,000	912,000,000	$ 909,000,000
United States Plans | Automotive Segment [Member] | Recurring measurement [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		870,000,000	912,000,000
United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		749,000,000	796,000,000
United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		35,000,000	25,000,000
United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		86,000,000	91,000,000
Non-U.S. Plans | Automotive Segment [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		57,000,000	54,000,000	$ 55,000,000
Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		57,000,000	54,000,000
Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		15,000,000	11,000,000
Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		2,000,000	2,000,000
Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		40,000,000	41,000,000
Other Security Investments [Member] | Railcar and Food Packaging [Member] | Recurring measurement [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		26,000,000	27,000,000
Other Security Investments [Member] | Railcar and Food Packaging [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		5,000,000	6,000,000
Other Security Investments [Member] | Railcar and Food Packaging [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Other Security Investments [Member] | Railcar and Food Packaging [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		21,000,000	21,000,000
Cash and Cash Equivalents [Member] | Railcar and Food Packaging [Member] | Recurring measurement [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		6,000,000	6,000,000
Cash and Cash Equivalents [Member] | Railcar and Food Packaging [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		5,000,000	5,000,000
Cash and Cash Equivalents [Member] | Railcar and Food Packaging [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		1,000,000	1,000,000
Cash and Cash Equivalents [Member] | Railcar and Food Packaging [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Cash and Cash Equivalents [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		26,000,000	44,000,000
Cash and Cash Equivalents [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		26,000,000	44,000,000
Cash and Cash Equivalents [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Cash and Cash Equivalents [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Equity Funds [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		310,000,000	314,000,000
Equity Funds [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		310,000,000	314,000,000
Equity Funds [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Equity Funds [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fixed Income Securities [Member] | Railcar and Food Packaging [Member] | Recurring measurement [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		19,000,000	23,000,000
Fixed Income Securities [Member] | Railcar and Food Packaging [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		18,000,000	22,000,000
Fixed Income Securities [Member] | Railcar and Food Packaging [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		1,000,000	1,000,000
Fixed Income Securities [Member] | Railcar and Food Packaging [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fixed Income Securities [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		149,000,000	166,000,000
Fixed Income Securities [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		149,000,000	166,000,000
Fixed Income Securities [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fixed Income Securities [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fixed Income Securities [Member] | Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		13,000,000	10,000,000
Fixed Income Securities [Member] | Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		13,000,000	10,000,000
Fixed Income Securities [Member] | Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Fixed Income Securities [Member] | Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Real estate and other [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		27,000,000	25,000,000
Real estate and other [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		27,000,000	25,000,000
Real estate and other [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Real estate and other [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Equity securities | Railcar and Food Packaging [Member] | Recurring measurement [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		78,000,000	83,000,000
Equity securities | Railcar and Food Packaging [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		51,000,000	55,000,000
Equity securities | Railcar and Food Packaging [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		27,000,000	28,000,000
Equity securities | Railcar and Food Packaging [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Equity securities | United States Plans | Automotive Segment [Member] | Recurring measurement [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		220,000,000	231,000,000
Equity securities | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		220,000,000	231,000,000
Equity securities | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Equity securities | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Equity securities | Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		2,000,000	1,000,000
Equity securities | Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		2,000,000	1,000,000
Equity securities | Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Equity securities | Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Corporate and Other [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		22,000,000	21,000,000
Corporate and Other [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Corporate and Other [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		22,000,000	21,000,000
Corporate and Other [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Government [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		30,000,000	20,000,000
Government [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		17,000,000	16,000,000
Government [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		13,000,000	4,000,000
Government [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Hedge Funds [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		86,000,000	91,000,000
Hedge Funds [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Hedge Funds [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Hedge Funds [Member] | United States Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		86,000,000	91,000,000
Insurance contracts | Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		40,000,000	41,000,000
Insurance contracts | Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Insurance contracts | Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Insurance contracts | Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		40,000,000	41,000,000
Corporate Bond Securities [Member] | Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		2,000,000	2,000,000
Corporate Bond Securities [Member] | Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member] | Level 1 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		0	0
Corporate Bond Securities [Member] | Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		2,000,000	2,000,000
Corporate Bond Securities [Member] | Non-U.S. Plans | Automotive Segment [Member] | Recurring measurement [Member] | Fair Value, Inputs, Level 3 [Member]
Assets
Defined Benefit Plan, Fair Value of Plan Assets		$ 0	$ 0

[1] Amounts are classified within other assets in our consolidated balance sheets.

[2] Amounts are classified within accrued expenses and other liabilities in our consolidated balance sheets.