Commitments and Contingencies (Details) $ in Thousands			3 Months Ended		12 Months Ended
		Jan. 10, 2022 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2021 USD ($)	Jul. 01, 2021 MW	Mar. 31, 2012 USD ($)
Operating Leased Assets [Line Items]
Restricted cash			$ 207,889			$ 219,079
Restricted cash, current	[1]		70,141			92,540
Restricted cash, non-current	[1]		137,748			126,539
Number of megawatts acquired | MW							10.5
Grants receivable								$ 16,500
Delaware grant			9,495			9,495
Settlement amount		$ 1,000
Softbank Corp. | Bloom Energy Japan
Operating Leased Assets [Line Items]
Percentage of voting interests acquired							50.00%
Variable Interest Entity, Primary Beneficiary
Operating Leased Assets [Line Items]
Restricted cash, current			1,710			3,078
Restricted cash, non-current			17,196			23,239
PPA II | Variable Interest Entity, Primary Beneficiary
Operating Leased Assets [Line Items]
Restricted cash			91,600
Restricted cash, current			41,200			41,700
Restricted cash, non-current			50,400			57,700
PPA IIIB | Variable Interest Entity, Primary Beneficiary
Operating Leased Assets [Line Items]
Restricted cash					$ 20,000
Restricted cash, current			1,500			1,200
Restricted cash, non-current			6,700			$ 6,700
Pledged assets, term					7 years
Period to meet criteria					5 years
Additional period to fund release					2 years
PPA Company 5
Operating Leased Assets [Line Items]
PPA expenses			$ 200	$ 100

[1] We have variable interest entities, which represent a portion of the consolidated balances recorded within these financial statement line items in the condensed consolidated balance sheets (see Note 11 - Portfolio Financings).