Commitments and Contingencies (Details) R$ in Millions, $ in Millions	Mar. 31, 2019 USD ($)	Sep. 01, 2010 USD ($)	Sep. 01, 2010 BRL (R$)
Other Commitments [Line Items]
Brazil tax matters estimated exposure	$ 205
White Martins
Other Commitments [Line Items]
Initial CADE civil fine imposed		$ 572	R$ 2,200
Revised CADE civil fine		442	1,700
Linde Gaes Ltda.
Other Commitments [Line Items]
Initial CADE civil fine imposed		62	237
Revised CADE civil fine		$ 49	R$ 188