Commitments and Contingencies (Details) R$ in Millions, $ in Millions	Sep. 01, 2010 USD ($) company	Sep. 30, 2021 USD ($)	Apr. 23, 2019 € / shares	Apr. 08, 2019 shares	Sep. 01, 2010 BRL (R$)
Other Commitments [Line Items]
Brazil tax matters estimated exposure | $		$ 205
Number of industrial gas companies involved in the matter | company	5
White Martins
Other Commitments [Line Items]
Initial CADE civil fine imposed	$ 404				R$ 2,200
Revised CADE civil fine	312				1,700
Linde Gaes Ltda.
Other Commitments [Line Items]
Initial CADE civil fine imposed	44				237
Revised CADE civil fine	$ 35				R$ 188
Linde AG
Other Commitments [Line Items]
Linde AG shares outstanding (in shares) | shares				14,763,113
Squeeze-Out Transaction | Linde AG
Other Commitments [Line Items]
Cash consideration per share | € / shares			€ 189.46