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Commitments and Contingencies - Narrative (Details) € in Millions, $ in Millions							1 Months Ended	12 Months Ended
	May 29, 2020 USD ($)	Mar. 03, 2020 USD ($)	Mar. 15, 2019 USD ($)	Mar. 11, 2019 EUR (€)	Mar. 18, 2018 USD ($)	Aug. 03, 2016 EUR (€)	Jan. 31, 2013	Dec. 31, 2020 EUR (€) company subsidiary	Dec. 31, 2020 USD ($)	Mar. 18, 2019 USD ($)
Loss Contingencies [Line Items]
Environmental loss contingencies									$ 1.0
Total, off-balance sheet liability									4,100.0
Purchase obligations, within next twelve months									838.0
Purchase obligations, year two									86.0
Purchase obligations, year three									37.0
Purchase obligations, year four									8.0
Purchase obligations, year five									5.0
Purchase obligations, thereafter									$ 18.0
Equipment failure \| Pending litigation \| Natural gas storage system in northern germany
Loss Contingencies [Line Items]
Damages sought \| €				€ 142		€ 202
Marginal rate on annual prime rate (percent)				5.00%		5.00%
Damage from fire \| Pending litigation \| INOES and Naphtachimie
Loss Contingencies [Line Items]
Damages sought \| €								€ 250
Plant shutdown days							15 days
Subsidiaries participating \| subsidiary								2
Other companies participating \| company								17
Lost profits and various costs \| Pending litigation \| International Engineering & Construction S.A. (IEC)
Loss Contingencies [Line Items]
Damages sought	$ 235.0	$ 244.9	$ 591.0
Loss of cash flow \| Pending litigation \| International Engineering & Construction S.A. (IEC)
Loss Contingencies [Line Items]
Damages sought		700.0
Liquidated damages \| Pending litigation \| International Engineering & Construction S.A. (IEC)
Loss Contingencies [Line Items]
Damages sought		4.8
Take-or-pay future obligations \| Pending litigation \| International Engineering & Construction S.A. (IEC)
Loss Contingencies [Line Items]
Damages sought		$ 58.6
Legal fees \| Pending litigation \| International Engineering & Construction S.A. (IEC)
Loss Contingencies [Line Items]
Damages sought	$ 14.2
Breach of fiduciary duties \| Pending litigation \| 2018 Transactions
Loss Contingencies [Line Items]
Repurchase of stock from GE										$ 1,500.0
GE sale of stock					$ 2,500.0