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Debt (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Jan. 31, 2021	Mar. 31, 2021	Mar. 31, 2020	Apr. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Debt		$ 8,056,000			$ 8,059,000
Amortization included in interest expense		1,000	$ 1,000
Holding Company
Debt Instrument [Line Items]
Gain on extinguishment of debt	$ 2,000
Debt		5,805,000			5,811,000
Energy Segment
Debt Instrument [Line Items]
Debt		1,691,000			1,691,000
Automotive Segment
Debt Instrument [Line Items]
Debt		352,000			368,000
Food Packaging Segment
Debt Instrument [Line Items]
Debt		156,000			151,000
Metals Segment
Debt Instrument [Line Items]
Debt		28,000			16,000
Real Estate Segment
Debt Instrument [Line Items]
Debt		1,000			1,000
Home Fashion Segment
Debt Instrument [Line Items]
Debt		23,000			21,000
Reporting Segments
Debt Instrument [Line Items]
Debt		$ 2,251,000			$ 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%	6.25%
Redemption of senior notes	$ 750,000,000			$ 455,000
Debt		$ 456,000			$ 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%
Debt		$ 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%
Debt		$ 1,106,000			$ 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%
Debt		$ 748,000			$ 748,000
6.250% senior unsecured notes due 2026 | Holding Company
Debt Instrument [Line Items]
Interest rate on debt issued		6.25%			6.25%
Debt		$ 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%
Debt		$ 999,000			$ 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%
Debt		$ 747,000			$ 0

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The amount of redemption amount of principal amount of debt.

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