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Debt (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Jan. 31, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Apr. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Debt		$ 8,065,000		$ 8,065,000			$ 8,059,000
Amortization included in interest expense		0	$ 1,000	1,000	$ 2,000
Holding Company
Debt Instrument [Line Items]
Gain on extinguishment of debt	$ 2,000
Debt		5,811,000		5,811,000			5,811,000
Energy Segment
Debt Instrument [Line Items]
Debt		1,693,000		1,693,000			1,691,000
Automotive Segment
Debt Instrument [Line Items]
Debt		342,000		342,000			368,000
Food Packaging Segment
Debt Instrument [Line Items]
Debt		158,000		158,000			151,000
Metals Segment
Debt Instrument [Line Items]
Debt		26,000		26,000			16,000
Real Estate Segment
Debt Instrument [Line Items]
Debt		2,000		2,000			1,000
Home Fashion Segment
Debt Instrument [Line Items]
Debt		33,000		33,000			21,000
Reporting Segments
Debt Instrument [Line Items]
Debt		2,254,000		2,254,000			$ 2,248,000
6.250% senior unsecured notes due 2022 | Holding Company
Debt Instrument [Line Items]
Interest rate on debt issued	6.25%					6.25%	6.25%
Redemption of senior notes	$ 750,000,000					$ 455,000
Debt		$ 0		$ 0			$ 1,209,000
6.750% senior unsecured notes due 2024 | Holding Company
Debt Instrument [Line Items]
Interest rate on debt issued		6.75%		6.75%			6.75%
Debt		$ 499,000		$ 499,000			$ 499,000
4.750% senior unsecured notes due 2024 | Holding Company
Debt Instrument [Line Items]
Interest rate on debt issued		4.75%		4.75%			4.75%
Debt		$ 1,105,000		$ 1,105,000			$ 1,106,000
6.375% senior unsecured notes due 2025 | Holding Company
Debt Instrument [Line Items]
Interest rate on debt issued			6.375%		6.375%		6.375%
Debt		$ 749,000		$ 749,000			$ 748,000
6.250% senior unsecured notes due 2026 | Holding Company
Debt Instrument [Line Items]
Interest rate on debt issued		6.25%		6.25%			6.25%
Debt		$ 1,250,000		$ 1,250,000			$ 1,250,000
5.250% senior unsecured notes due 2027 | Holding Company
Debt Instrument [Line Items]
Face value of debit issued						$ 455,000
Interest rate on debt issued		5.25%		5.25%		5.25%	5.25%
Debt		$ 1,461,000		$ 1,461,000			$ 999,000
4.375% senior unsecured notes due 2029 | Holding Company
Debt Instrument [Line Items]
Face value of debit issued	$ 750,000
Interest rate on debt issued	4.375%	4.375%		4.375%
Debt		$ 747,000		$ 747,000			$ 0
6.125% senior secured notes due 2028 | Energy Segment
Debt Instrument [Line Items]
Face value of debit issued		$ 550,000		$ 550,000
Interest rate on debt issued		6.125%		6.125%
9.25% senior secured notes due 2023 | Energy Segment
Debt Instrument [Line Items]
Interest rate on debt issued		9.25%		9.25%

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