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Advances and Other Receivables - Advances and Other Receivables Roll Forward (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Advances And Other Receivables, Reserves [Roll Forward] |  |  |  |
Balance - beginning of period | $ 206 | $ 193 | $ 208 | $ 168
Provision and other additions(1) | 26 | 29 | 41 | 59
Write-offs | (41) | (6) | (58) | (11)
Balance - end of period | 191 | 216 | 191 | 216
Cumulative incurred losses related to advances and other receivables associated with inactive and liquidated loans | $ 8 | $ 3 | $ 20 | $ 13

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- Definition Gain (Loss) On Advances And Other Receivables Related To Inactive And Liquidated Loans + References No definition available. + Details
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