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v3.21.1

Revenue Contract Balances (Details) - USD ($) | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Aug. 31, 2021 | Dec. 31, 2020 | Aug. 31, 2020
Financing Receivable, after Allowance for Credit Loss | $ 103,000,000 |  |  | $ 101,000,000 |
Financing Receivable, Allowance for Credit Loss | 8,000,000 |  |  | 9,000,000 |
Contract with Customer, Liability | 376,000,000 |  |  | 531,000,000 |
Contract with Customer, Liability | 376,000,000 |  |  | $ 531,000,000 |
Contract with Customer, Liability, Revenue Recognized | 183,000,000 | $ 10,000,000 |  |  |
Mong Duong Subsidiary [Member] |  |  |  |  |
Financing Receivable, after Allowance for Credit Loss | 1,300,000,000 |  |  |  |
Financing Receivable, Allowance for Credit Loss | 32,000,000 |  |  |  |
Mong Duong Subsidiary [Member] | Discontinued Operations, Held-for-sale or Disposed of by Sale [Member] |  |  |  |  |
Financing Receivable, after Allowance for Credit Loss, Noncurrent | 1,200,000,000 |  |  |  |
Financing Receivable, after Allowance for Credit Loss, Current | 83,000,000 |  |  |  |
Angamos [Member] | Minera Escondida and Minera Spence [Member] |  |  |  |  |
Contract with Customer, Liability | 219,000,000 |  |  |  | $ 655,000,000
Contract with Customer, Liability | $ 219,000,000 |  |  |  | $ 655,000,000
Angamos [Member] | Minera Escondida and Minera Spence [Member] | Forecast [Member] |  |  |  |  |
Capitalized Contract Cost, Amortization |  |  | $ 55,000,000 |  |

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