Significant accounting policies - Schedule of Intangible Assets with Indefinite Useful Life (Details)	12 Months Ended
	Dec. 31, 2022
Acquired patents, know-how and in-process research & development \| Bottom of range
Disclosure of joint ventures [line items]
Intangibles, useful life (in years)	5 years
Acquired patents, know-how and in-process research & development \| Top of range
Disclosure of joint ventures [line items]
Intangibles, useful life (in years)	20 years
ERP management reporting software system \| Bottom of range
Disclosure of joint ventures [line items]
Intangibles, useful life (in years)	5 years
ERP management reporting software system \| Top of range
Disclosure of joint ventures [line items]
Intangibles, useful life (in years)	10 years
Acquired customer contracts and relationships \| Bottom of range
Disclosure of joint ventures [line items]
Intangibles, useful life (in years)	7 years
Acquired customer contracts and relationships \| Top of range
Disclosure of joint ventures [line items]
Intangibles, useful life (in years)	10 years
Acquired non-compete agreements \| Bottom of range
Disclosure of joint ventures [line items]
Intangibles, useful life (in years)	1 year
Acquired non-compete agreements \| Top of range
Disclosure of joint ventures [line items]
Intangibles, useful life (in years)	3 years
Domain names
Disclosure of joint ventures [line items]
Intangibles, useful life (in years)	15 years
Acquired trademarks and service marks
Disclosure of joint ventures [line items]
Intangibles, useful life (in years)	15 years
Internally generated fuel cell intangible assets \| Bottom of range
Disclosure of joint ventures [line items]
Intangibles, useful life (in years)	3 years
Internally generated fuel cell intangible assets \| Top of range
Disclosure of joint ventures [line items]
Intangibles, useful life (in years)	5 years