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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]
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
Damage from fire \| Pending litigation \| International Engineering & Construction S.A. (IEC)
Loss Contingencies [Line Items]
Damages sought			$ 591.0
Loss of Cash Flow \| Pending litigation \| International Engineering & Construction S.A. (IEC)
Loss Contingencies [Line Items]
Damages sought		$ 700.0
Take-or-pay Future Obligations \| Pending litigation \| International Engineering & Construction S.A. (IEC)
Loss Contingencies [Line Items]
Damages sought		58.6
Liquidated Damages \| Pending litigation \| International Engineering & Construction S.A. (IEC)
Loss Contingencies [Line Items]
Damages sought		4.8
Legal Fees \| Pending litigation \| International Engineering & Construction S.A. (IEC)
Loss Contingencies [Line Items]
Damages sought	$ 14.2
Lost Profits and Various Costs \| Pending litigation \| International Engineering & Construction S.A. (IEC)
Loss Contingencies [Line Items]
Damages sought	$ 235.0	$ 244.9
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