v3.21.1

DEBT (Tables) | 3 Months Ended
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Mar. 31, 2021
Debt Disclosure [Abstract] |
Schedule of carrying amounts and fair values of long-term debt | The carrying amounts and fair value of long-term debt are as follows:
| March 31, 2021 |  | December 31, 2020
(US$ in millions) | Carrying Value | Fair Value (Level 2) |  |  |  | Carrying Value | Fair Value (Level 2) |  |
Long-term debt, including current portion | $ | 4,350 |  | $ | 4,546 |  |  |  |  | $ | 4,460 |  | $ | 4,646 |  |  |

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