The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Segment information - Additional information (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($) segment	Jun. 30, 2021 segment	Jun. 30, 2022 USD ($) segment	Jun. 30, 2021 segment	Jan. 03, 2022 USD ($)	May 07, 2021 USD ($)	Mar. 12, 2021 USD ($)	Dec. 31, 2020 USD ($)	May 28, 2019 USD ($)	Aug. 31, 2014 USD ($)
Number of Operating Segments \| segment	2	2	2	2
Revolving credit facility
Line of Credit Facility, Maximum Borrowing Capacity	$ 85		$ 85		$ 85	$ 85	$ 85	$ 85	$ 85	$ 85
Revolving credit facility \| Hoegh LNG
Line of Credit Facility, Maximum Borrowing Capacity	85		85
$385 million facility
Line of Credit Facility, Maximum Borrowing Capacity	$ 385		$ 385
Neptune and the Cape Ann \| Neptune and the Cape Ann
Equity Method Investment, Ownership Percentage	50.00%	50.00%	50.00%	50.00%