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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Long-Term Debt - Additional Information - Bonds (Details)		1 Months Ended		3 Months Ended
	Jul. 02, 2018 USD ($)	Oct. 31, 2019 USD ($)	Jul. 31, 2018 USD ($)	Nov. 30, 2013 USD ($) vessel	Dec. 31, 2019 USD ($)	Sep. 30, 2019 USD ($)	Dec. 31, 2018 USD ($)	Aug. 31, 2017 USD ($)	Feb. 28, 2015 USD ($)
Debt Instrument [Line Items]
Carrying amount of debt					$ 3,178,950,000		$ 3,097,742,000
Long-term portion					2,825,712,000		2,543,406,000
Aggregate principal amount					3,228,654,000		3,142,177,000
Long-term debt \| Senior Unsecured Green Bond
Debt Instrument [Line Items]
Debt instrument, face amount		$ 125,000,000
Marginal rate added for interest paid (as a percent)		6.50%
Long-term debt \| Senior Bonds US
Debt Instrument [Line Items]
Debt instrument, face amount						$ 120,000,000
Carrying amount of debt					119,000,000		0
Interest rate, percentage						7.107%
Bonds \| Five-Year Senior Unsecured Bonds Maturing July 2023
Debt Instrument [Line Items]
Debt instrument, face amount	$ 700,000,000.0		$ 700,000,000
Carrying amount of debt					700,000,000
Debt instrument term (in years)	5 years		5 years
Interest rate, percentage	8.50%		8.50%
Bonds \| Senior Bonds due in June 2024
Debt Instrument [Line Items]
Debt instrument, face amount									$ 30,000,000
Carrying amount of debt					$ 13,600,000		17,200,000
Interest rate, percentage					4.27%
Bonds \| 10-Year Senior Secured Bonds
Debt Instrument [Line Items]
Debt instrument, face amount				$ 174,200,000
Carrying amount of debt					$ 108,600,000		123,900,000
Debt instrument term (in years)				10 years
Number of vessels \| vessel				2
Interest rate, percentage				4.96%
Bonds \| Senior Unsecured Bonds due in August 2022
Debt Instrument [Line Items]
Debt instrument, face amount								$ 250,000,000
Aggregate principal amount					250,000,000		250,000,000
Interest rate, percentage								7.125%
Brookfield \| Bonds \| Five-Year Senior Unsecured Bonds Maturing July 2023
Debt Instrument [Line Items]
Debt instrument, face amount	$ 500,000,000
Long-term portion					$ 423,600,000		$ 475,000,000