Segment Reporting - Condensed Statement of Operations By Reporting Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues:
Net sales	$ 1,764	$ 2,484	$ 4,950	$ 7,371
Other revenues from operations	163	170	460	504
Net loss from investment activities	(1,259)	(657)	(2,152)	(1,968)
Interest and dividend income	46	69	135	192
(Loss) gain on disposition of assets, net	7	249	5	256
Other income (loss), net	1	5	(27)	16
Revenues	722	2,320	3,371	6,371
Expenses:
Cost of goods sold	1,599	2,069	4,543	6,098
Other expenses from operations	127	141	369	409
Selling, general and administrative	289	352	888	1,027
Restructuring, net	1	4	8	15
Impairment	1	0	6	1
Interest expense	171	153	517	443
Expenses	2,188	2,719	6,331	7,993
(Loss) income from continuing operations before income tax benefit (expense)	(1,466)	(399)	(2,960)	(1,622)
Income tax benefit	66	26	118	12
Net loss	(1,400)	(373)	(2,842)	(1,610)
Less: net (loss) income from continuing operations attributable to non-controlling interests	(686)	(324)	(1,043)	(693)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	(714)	(49)	(1,799)	(917)
Supplemental information:
Capital expenditures	40	63	155	195
Depreciation and amortization	126	129	379	389
Investment Segment
Revenues:
Net sales	0	0	0	0
Other revenues from operations	0	0	0	0
Net loss from investment activities	(1,166)	(699)	(1,893)	(1,619)
Interest and dividend income	38	50	107	132
(Loss) gain on disposition of assets, net	0	0	0	0
Other income (loss), net	(2)	0	(7)	(1)
Revenues	(1,130)	(649)	(1,793)	(1,488)
Expenses:
Cost of goods sold	0	0	0	0
Other expenses from operations	0	0	0	0
Selling, general and administrative	2	5	(1)	10
Restructuring, net	0	0	0	0
Impairment	0	0	0	0
Interest expense	51	27	145	66
Expenses	53	32	144	76
(Loss) income from continuing operations before income tax benefit (expense)	(1,183)	(681)	(1,937)	(1,564)
Income tax benefit	0	0	0	0
Net loss	(1,183)	(681)	(1,937)	(1,564)
Less: net (loss) income from continuing operations attributable to non-controlling interests	(640)	(339)	(947)	(779)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	(543)	(342)	(990)	(785)
Supplemental information:
Capital expenditures	0	0	0	0
Depreciation and amortization	0	0	0	0
Energy Segment
Revenues:
Net sales	1,005	1,622	2,811	4,794
Other revenues from operations	0	0	0	0
Net loss from investment activities	(68)	0	(20)	0
Interest and dividend income	3	1	10	3
(Loss) gain on disposition of assets, net	0	(3)	(2)	5
Other income (loss), net	3	5	(5)	10
Revenues	943	1,625	2,794	4,812
Expenses:
Cost of goods sold	1,040	1,440	2,934	4,229
Other expenses from operations	0	0	0	0
Selling, general and administrative	27	36	88	107
Restructuring, net	0	0	0	0
Impairment	0	0	0	0
Interest expense	31	27	93	80
Expenses	1,098	1,503	3,115	4,416
(Loss) income from continuing operations before income tax benefit (expense)	(155)	122	(321)	396
Income tax benefit	35	(30)	85	(98)
Net loss	(120)	92	(236)	298
Less: net (loss) income from continuing operations attributable to non-controlling interests	(47)	13	(96)	77
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	(73)	79	(140)	221
Supplemental information:
Capital expenditures	24	30	101	85
Depreciation and amortization	86	88	256	265
Automotive Segment
Revenues:
Net sales	513	596	1,468	1,736
Other revenues from operations	147	148	414	445
Net loss from investment activities	0	0	0	0
Interest and dividend income	0	0	0	0
(Loss) gain on disposition of assets, net	(1)	0	(1)	(2)
Other income (loss), net	(1)	5	(6)	12
Revenues	658	749	1,875	2,191
Expenses:
Cost of goods sold	351	409	1,036	1,190
Other expenses from operations	115	125	339	368
Selling, general and administrative	223	271	671	779
Restructuring, net	1	1	8	3
Impairment	0	0	0	0
Interest expense	2	5	9	15
Expenses	692	811	2,063	2,355
(Loss) income from continuing operations before income tax benefit (expense)	(34)	(62)	(188)	(164)
Income tax benefit	8	14	39	36
Net loss	(26)	(48)	(149)	(128)
Less: net (loss) income from continuing operations attributable to non-controlling interests	0	0	0	0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	(26)	(48)	(149)	(128)
Supplemental information:
Capital expenditures	9	20	25	42
Depreciation and amortization	24	25	72	73
Food Packaging Segment
Revenues:
Net sales	105	98	306	290
Other revenues from operations	0	0	0	0
Net loss from investment activities	0	0	0	0
Interest and dividend income	0	0	0	0
(Loss) gain on disposition of assets, net	0	0	0	0
Other income (loss), net	0	(6)	(9)	(8)
Revenues	105	92	297	282
Expenses:
Cost of goods sold	84	80	243	230
Other expenses from operations	0	0	0	0
Selling, general and administrative	13	15	38	44
Restructuring, net	0	2	0	9
Impairment	0	0	0	1
Interest expense	3	3	10	12
Expenses	100	100	291	296
(Loss) income from continuing operations before income tax benefit (expense)	5	(8)	6	(14)
Income tax benefit	(1)	(4)	(3)	(2)
Net loss	4	(12)	3	(16)
Less: net (loss) income from continuing operations attributable to non-controlling interests	1	(2)	0	(3)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	3	(10)	3	(13)
Supplemental information:
Capital expenditures	4	2	10	12
Depreciation and amortization	6	5	19	19
Metals Segment
Revenues:
Net sales	83	82	203	270
Other revenues from operations	0	0	0	0
Net loss from investment activities	0	0	0	0
Interest and dividend income	0	0	0	0
(Loss) gain on disposition of assets, net	1	0	1	1
Other income (loss), net	1	0	1	0
Revenues	85	82	205	271
Expenses:
Cost of goods sold	78	84	202	269
Other expenses from operations	0	0	0	0
Selling, general and administrative	3	3	11	11
Restructuring, net	0	1	0	3
Impairment	1	0	1	0
Interest expense	0	1	1	1
Expenses	82	89	215	284
(Loss) income from continuing operations before income tax benefit (expense)	3	(7)	(10)	(13)
Income tax benefit	0	0	0	0
Net loss	3	(7)	(10)	(13)
Less: net (loss) income from continuing operations attributable to non-controlling interests	0	0	0	0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	3	(7)	(10)	(13)
Supplemental information:
Capital expenditures	1	3	3	20
Depreciation and amortization	4	5	13	14
Real Estate Segment
Revenues:
Net sales	5	6	22	17
Other revenues from operations	16	22	46	59
Net loss from investment activities	0	0	0	0
Interest and dividend income	1	1	1	1
(Loss) gain on disposition of assets, net	7	0	7	0
Other income (loss), net	0	0	0	2
Revenues	29	29	76	79
Expenses:
Cost of goods sold	4	5	17	14
Other expenses from operations	12	16	30	41
Selling, general and administrative	5	4	31	16
Restructuring, net	0	0	0	0
Impairment	0	0	2	0
Interest expense	0	0	0	0
Expenses	21	25	80	71
(Loss) income from continuing operations before income tax benefit (expense)	8	4	(4)	8
Income tax benefit	0	0	0	1
Net loss	8	4	(4)	9
Less: net (loss) income from continuing operations attributable to non-controlling interests	0	0	0	0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	8	4	(4)	9
Supplemental information:
Capital expenditures	1	2	10	18
Depreciation and amortization	4	4	13	13
Home Fashion Segment
Revenues:
Net sales	53	51	140	134
Other revenues from operations	0	0	0	0
Net loss from investment activities	0	0	0	0
Interest and dividend income	0	0	0	0
(Loss) gain on disposition of assets, net	0	0	0	0
Other income (loss), net	0	0	3	0
Revenues	53	51	143	134
Expenses:
Cost of goods sold	42	43	111	115
Other expenses from operations	0	0	0	0
Selling, general and administrative	10	12	30	31
Restructuring, net	0	0	0	0
Impairment	0	0	3	0
Interest expense	0	1	1	1
Expenses	52	56	145	147
(Loss) income from continuing operations before income tax benefit (expense)	1	(5)	(2)	(13)
Income tax benefit	0	0	0	0
Net loss	1	(5)	(2)	(13)
Less: net (loss) income from continuing operations attributable to non-controlling interests	0	0	0	0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	1	(5)	(2)	(13)
Supplemental information:
Capital expenditures	1	2	4	4
Depreciation and amortization	2	2	6	5
Mining segment
Revenues:
Net sales	0	29	0	130
Other revenues from operations	0	0	0	0
Net loss from investment activities	0	0	0	0
Interest and dividend income	0	0	0	1
(Loss) gain on disposition of assets, net	0	252	0	252
Other income (loss), net	0	(1)	0	(1)
Revenues	0	280	0	382
Expenses:
Cost of goods sold	0	8	0	51
Other expenses from operations	0	0	0	0
Selling, general and administrative	0	2	0	15
Restructuring, net	0	0	0	0
Impairment	0	0	0	0
Interest expense	0	1	0	4
Expenses	0	11	0	70
(Loss) income from continuing operations before income tax benefit (expense)	0	269	0	312
Income tax benefit	0	1	0	(1)
Net loss	0	270	0	311
Less: net (loss) income from continuing operations attributable to non-controlling interests	0	4	0	12
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	0	266	0	299
Supplemental information:
Capital expenditures	0	4	0	14
Depreciation and amortization	0	0	0	0
Holding Company
Revenues:
Net sales	0	0	0	0
Other revenues from operations	0	0	0	0
Net loss from investment activities	(25)	42	(239)	(349)
Interest and dividend income	4	17	17	55
(Loss) gain on disposition of assets, net	0	0	0	0
Other income (loss), net	0	2	(4)	2
Revenues	(21)	61	(226)	(292)
Expenses:
Cost of goods sold	0	0	0	0
Other expenses from operations	0	0	0	0
Selling, general and administrative	6	4	20	14
Restructuring, net	0	0	0	0
Impairment	0	0	0	0
Interest expense	84	88	258	264
Expenses	90	92	278	278
(Loss) income from continuing operations before income tax benefit (expense)	(111)	(31)	(504)	(570)
Income tax benefit	24	45	(3)	76
Net loss	(87)	14	(507)	(494)
Less: net (loss) income from continuing operations attributable to non-controlling interests	0	0	0	0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent, Total	(87)	14	(507)	(494)
Supplemental information:
Capital expenditures	0	0	2	0
Depreciation and amortization	$ 0	$ 0	$ 0	$ 0