Revenue Operating Leases (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Property Subject to or Available for Operating Lease [Line Items]
Lessor, Operating Lease, Payments to be Received, Remainder of Fiscal Year	$ 372,600
Lessor, Operating Lease, Payments to be Received, Two Years	587,100
Lessor, Operating Lease, Payments to be Received, Three Years	447,500
Lessor, Operating Lease, Payments to be Received, Four Years	335,000
Lessor, Operating Lease, Payments to be Received, Five Years	259,300
Property, Plant and Equipment, Net	4,699,797	$ 5,033,130
Assets Leased to Others [Member]
Property Subject to or Available for Operating Lease [Line Items]
Property, Plant and Equipment, Net	3,100,000
Property, Plant and Equipment, Gross	4,000,000
Accumulated depreciation on vessels and equipment	$ 900,000

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount of lease payments to be received by lessor in fifth fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.

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Amount of lease payments to be received by lessor in remainder of fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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