Commitments and Contingencies (Details) R$ in Millions, $ in Millions	Sep. 01, 2010 USD ($) company	Mar. 31, 2022 USD ($)	Apr. 23, 2019 € / shares	Apr. 08, 2019 shares	Sep. 01, 2010 BRL (R$)
Other Commitments [Line Items]
Brazil tax matters estimated exposure | $		$ 235
Number of industrial gas companies involved in the matter | company	5
White Martins
Other Commitments [Line Items]
Initial CADE civil fine imposed	$ 464				R$ 2,200
Revised CADE civil fine	359				1,700
MG Industries GmbH
Other Commitments [Line Items]
Initial CADE civil fine imposed	50				237
Revised CADE civil fine	$ 40				R$ 188
Linde AG
Other Commitments [Line Items]
Common stock tendered (in shares) | shares				14,763,113
Linde AG | Squeeze-Out Transaction
Other Commitments [Line Items]
Cash consideration per share | € / shares			€ 189.46