Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Income Statement [Abstract]
Revenue from contract with customer	$ 295	$ 3,726
Operating expense:
Cost of revenue	15,656	23,320
Research and development	43,729	39,132
Selling, general, and administrative	121,164	114,073
Restructuring and related charges	7,765	0
Total operating expenses	188,314	176,525
Loss from operations	(188,019)	(172,799)
Other income (expense):
Change in fair value of private placement warrant liability	962	14,106
Change in fair value of earnout liability	9,202	92,834
Gain (loss) on equity securities	(14,267)	10,082
Foreign currency exchange loss and other expense, net	(1,402)	(549)
Investment income and interest income, net	9,006	2,339
Total other income (expense)	3,501	118,812
Loss before income taxes	(184,518)	(53,987)
Income tax expense (benefit)	(492)	526
Net loss	(184,026)	(54,513)
Less: Net gain (loss) attributable to noncontrolling interest	16	(22,327)
Net loss attributable to Hyzon	(184,042)	(32,186)
Comprehensive loss:
Net loss	(184,026)	(54,513)
Foreign currency translation adjustment	951	(1,921)
Available-for-sale short-term investments:	(1,303)	1,303
Comprehensive loss	(184,378)	(55,131)
Less: Comprehensive income (loss) attributable to noncontrolling interest	25	(22,443)
Comprehensive loss attributable to Hyzon	$ (184,403)	$ (32,688)
Net loss per share attributable to Hyzon:
Basic (in dollars per share)	$ (0.75)	$ (0.13)
Diluted (in dollars per share)	$ (0.75)	$ (0.13)
Weighted average common shares outstanding:
Basic (in shares)	244,774,000	248,040
Diluted (in shares)	244,774,000	248,040