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Commitments and Contingencies (Details) R$ in Millions, $ in Millions | Sep. 01, 2010 USD ($) company | Sep. 30, 2020 USD ($) | Apr. 23, 2019 € / shares | Apr. 08, 2019 shares | Sep. 01, 2010 BRL (R$)
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Other Commitments [Line Items] |  |  |  |  |
Brazil tax matters estimated exposure | $ |  | $ 190 |  |  |
Number of industrial gas companies involved in the matter | company | 5 |  |  |  |
White Martins |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |
Initial CADE civil fine imposed | $ 390 |  |  |  | R$ 2,200
Revised CADE civil fine | 301 |  |  |  | 1,700
Linde Gaes Ltda. |  |  |  |  |
Other Commitments [Line Items] |  |  |  |  |
Initial CADE civil fine imposed | 42 |  |  |  | 237
Revised CADE civil fine | $ 33 |  |  |  | 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 |  |

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