Debt Table (Details) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Debt	$ 12,530	$ 12,594
Automotive Segment [Member]
Debt Instrument [Line Items]
Debt	3,282	3,135
Energy Segment [Member]
Debt Instrument [Line Items]
Debt	668	667
Gaming Segment [Member]
Debt Instrument [Line Items]
Debt	288	289
Railcar Segment [Member]
Debt Instrument [Line Items]
Debt	2,461	2,671
Food Packaging Segment [Member]
Debt Instrument [Line Items]
Debt	267	267
Senior unsecured notes [Member] | 2022 Notes [Member]
Debt Instrument [Line Items]
Debt	1,338	1,338
Senior unsecured notes [Member] | 2020 Notes [Member]
Debt Instrument [Line Items]
Debt	1,706	1,706
Senior unsecured notes [Member] | 2019 Notes [Member]
Debt Instrument [Line Items]
Debt	1,270	1,270
Senior unsecured notes [Member] | 2017 Notes [Member]
Debt Instrument [Line Items]
Debt	1,173	1,172
Senior unsecured notes [Member] | Railcar Segment [Member]
Debt Instrument [Line Items]
Debt	2,461	2,671
Debt facilities [Member] | Automotive Segment [Member]
Debt Instrument [Line Items]
Debt	3,262	3,121
Debt facilities [Member] | Energy Segment [Member]
Debt Instrument [Line Items]
Debt	620	619
Secured credit facilities [Member] | Gaming Segment [Member]
Debt Instrument [Line Items]
Debt	288	289
Secured credit facilities [Member] | Food Packaging Segment [Member]
Debt Instrument [Line Items]
Debt	267	267
Other Debt Obligations [Member]
Debt Instrument [Line Items]
Debt	$ 145	$ 141