Segment Reporting - Condensed Statement of Operations By Reporting Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenues:
Net sales	$ 1,860	$ 2,300
Other revenues from operations	161	162
Net (loss) gain from investment activities	(2,128)	(674)
Interest and dividend income	64	64
Other (loss) income, net	(17)	3
Revenues	(60)	1,855
Expenses:
Cost of goods sold	1,810	1,900
Other expenses from operations	135	131
Selling, general and administrative	308	336
Restructuring, net	2	7
Interest expense	171	139
Expenses	2,426	2,513
Income (loss) from continuing operations before income tax benefit (expense)	(2,486)	(658)
Income tax benefit (expense)	180	(6)
Net loss	(2,306)	(664)
Less: net income (loss) attributable to non-controlling interests	(922)	(270)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	(1,384)	(394)
Supplemental information:
Capital expenditures	53	65
Depreciation and amortization	121	123
Investment Segment
Revenues:
Net sales	0	0
Other revenues from operations	0	0
Net (loss) gain from investment activities	(1,816)	(609)
Interest and dividend income	52	42
Other (loss) income, net	(1)	(1)
Revenues	(1,765)	(568)
Expenses:
Cost of goods sold	0	0
Other expenses from operations	0	0
Selling, general and administrative	(6)	2
Restructuring, net	0	0
Interest expense	43	18
Expenses	37	20
Income (loss) from continuing operations before income tax benefit (expense)	(1,802)	(588)
Income tax benefit (expense)	0	0
Net loss	(1,802)	(588)
Less: net income (loss) attributable to non-controlling interests	(876)	(293)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	(926)	(295)
Supplemental information:
Capital expenditures	0	0
Depreciation and amortization	0	0
Energy Segment
Revenues:
Net sales	1,130	1,486
Other revenues from operations	0	0
Net (loss) gain from investment activities	30	0
Interest and dividend income	3	0
Other (loss) income, net	(6)	1
Revenues	1,157	1,487
Expenses:
Cost of goods sold	1,250	1,303
Other expenses from operations	0	0
Selling, general and administrative	31	37
Restructuring, net	0	0
Interest expense	29	26
Expenses	1,310	1,366
Income (loss) from continuing operations before income tax benefit (expense)	(153)	121
Income tax benefit (expense)	40	(31)
Net loss	(113)	90
Less: net income (loss) attributable to non-controlling interests	(45)	24
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	(68)	66
Supplemental information:
Capital expenditures	35	29
Depreciation and amortization	80	83
Automotive Segment
Revenues:
Net sales	492	550
Other revenues from operations	143	143
Net (loss) gain from investment activities	0	0
Interest and dividend income	0	0
Other (loss) income, net	1	4
Revenues	636	697
Expenses:
Cost of goods sold	352	375
Other expenses from operations	123	119
Selling, general and administrative	246	252
Restructuring, net	2	0
Interest expense	5	5
Expenses	728	751
Income (loss) from continuing operations before income tax benefit (expense)	(92)	(54)
Income tax benefit (expense)	19	12
Net loss	(73)	(42)
Less: net income (loss) attributable to non-controlling interests	0	0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	(73)	(42)
Supplemental information:
Capital expenditures	9	13
Depreciation and amortization	24	24
Food Packaging Segment
Revenues:
Net sales	98	95
Other revenues from operations	0	0
Net (loss) gain from investment activities	0	0
Interest and dividend income	0	0
Other (loss) income, net	(7)	(3)
Revenues	91	92
Expenses:
Cost of goods sold	78	75
Other expenses from operations	0	0
Selling, general and administrative	12	15
Restructuring, net	0	7
Interest expense	4	4
Expenses	94	101
Income (loss) from continuing operations before income tax benefit (expense)	(3)	(9)
Income tax benefit (expense)	(1)	4
Net loss	(4)	(5)
Less: net income (loss) attributable to non-controlling interests	(1)	(2)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	(3)	(3)
Supplemental information:
Capital expenditures	2	7
Depreciation and amortization	6	6
Metals Segment
Revenues:
Net sales	86	93
Other revenues from operations	0	0
Net (loss) gain from investment activities	0	0
Interest and dividend income	0	0
Other (loss) income, net	0	0
Revenues	86	93
Expenses:
Cost of goods sold	85	92
Other expenses from operations	0	0
Selling, general and administrative	4	4
Restructuring, net	0	0
Interest expense	0	0
Expenses	89	96
Income (loss) from continuing operations before income tax benefit (expense)	(3)	(3)
Income tax benefit (expense)	0	0
Net loss	(3)	(3)
Less: net income (loss) attributable to non-controlling interests	0	0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	(3)	(3)
Supplemental information:
Capital expenditures	1	5
Depreciation and amortization	5	4
Real Estate Segment
Revenues:
Net sales	4	2
Other revenues from operations	18	19
Net (loss) gain from investment activities	0	0
Interest and dividend income	0	0
Other (loss) income, net	0	2
Revenues	22	23
Expenses:
Cost of goods sold	4	2
Other expenses from operations	12	12
Selling, general and administrative	5	5
Restructuring, net	0	0
Interest expense	0	0
Expenses	21	19
Income (loss) from continuing operations before income tax benefit (expense)	1	4
Income tax benefit (expense)	0	0
Net loss	1	4
Less: net income (loss) attributable to non-controlling interests	0	0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	1	4
Supplemental information:
Capital expenditures	4	6
Depreciation and amortization	4	4
Home Fashion Segment
Revenues:
Net sales	50	39
Other revenues from operations	0	0
Net (loss) gain from investment activities	0	0
Interest and dividend income	0	0
Other (loss) income, net	0	0
Revenues	50	39
Expenses:
Cost of goods sold	41	33
Other expenses from operations	0	0
Selling, general and administrative	11	10
Restructuring, net	0	0
Interest expense	0	0
Expenses	52	43
Income (loss) from continuing operations before income tax benefit (expense)	(2)	(4)
Income tax benefit (expense)	0	0
Net loss	(2)	(4)
Less: net income (loss) attributable to non-controlling interests	0	0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	(2)	(4)
Supplemental information:
Capital expenditures	2	1
Depreciation and amortization	2	2
Mining Segment
Revenues:
Net sales	0	35
Other revenues from operations	0	0
Net (loss) gain from investment activities	0	0
Interest and dividend income	0	1
Other (loss) income, net	0	0
Revenues	0	36
Expenses:
Cost of goods sold	0	20
Other expenses from operations	0	0
Selling, general and administrative	0	7
Restructuring, net	0	0
Interest expense	0	2
Expenses	0	29
Income (loss) from continuing operations before income tax benefit (expense)	0	7
Income tax benefit (expense)	0	(1)
Net loss	0	6
Less: net income (loss) attributable to non-controlling interests	0	1
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	0	5
Supplemental information:
Capital expenditures	0	4
Depreciation and amortization	0	0
Holding Company
Revenues:
Net sales	0	0
Other revenues from operations	0	0
Net (loss) gain from investment activities	(342)	(65)
Interest and dividend income	9	21
Other (loss) income, net	(4)	0
Revenues	(337)	(44)
Expenses:
Cost of goods sold	0	0
Other expenses from operations	0	0
Selling, general and administrative	5	4
Restructuring, net	0	0
Interest expense	90	84
Expenses	95	88
Income (loss) from continuing operations before income tax benefit (expense)	(432)	(132)
Income tax benefit (expense)	122	10
Net loss	(310)	(122)
Less: net income (loss) attributable to non-controlling interests	0	0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	(310)	(122)
Supplemental information:
Capital expenditures	0	0
Depreciation and amortization	$ 0	$ 0