Contingencies and commitments - (Tables) |
12 Months Ended | ||||||||||||||||||||||||||||||||||||||||
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Dec. 31, 2019 | |||||||||||||||||||||||||||||||||||||||||
| Commitments and Contingencies Disclosure [Abstract] | |||||||||||||||||||||||||||||||||||||||||
| U.S. repatriation tax commitments | The following table summarizes the remaining scheduled repatriation tax payments as of December 31, 2019 (in millions):
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