Investments - Equity Method Investments (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Schedule of Equity Method Investments [Line Items]
Carrying Value	$ 94,195		$ 94,195		$ 56,096
Capital commitment to be made in remainder of 2024	$ 23,700		$ 23,700
HyVia
Schedule of Equity Method Investments [Line Items]
Common Stock Ownership %	50.00%		50.00%		50.00%
Carrying Value	$ 10,445		$ 10,445		$ (2,068)
Payments to acquire equity method investments	$ 16,100	$ 0	$ 32,300	$ 22,300
AccionaPlug S.L.
Schedule of Equity Method Investments [Line Items]
Common Stock Ownership %	50.00%		50.00%		50.00%
Carrying Value	$ 3,816		$ 3,816		$ 3,198
Payments to acquire equity method investments	$ 0	800	$ 1,700	800
Clean H2 Infra Fund
Schedule of Equity Method Investments [Line Items]
Common Stock Ownership %	5.00%		5.00%		5.00%
Carrying Value	$ 26,510		$ 26,510		$ 13,357
Payments to acquire equity method investments	$ 9,700	3,300	$ 13,700	3,300
SK Plug Hyverse
Schedule of Equity Method Investments [Line Items]
Common Stock Ownership %	49.00%		49.00%		49.00%
Carrying Value	$ 53,424		$ 53,424		$ 41,609
Payments to acquire equity method investments	$ 16,000	$ 0	$ 16,000	$ 17,800

Amount of capital commitments relating to equity method investments to be paid in remainder of current fiscal year.

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- Definition

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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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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