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Receivables - Additional Information (Details) $ in Millions |  |  | 12 Months Ended
--- | --- | --- | ---
Jan. 02, 2020 USD ($) | Mar. 30, 2012 USD ($) | Dec. 31, 2019 USD ($) financial_institution | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Schedule Of Financial Receivables [Line Items] |  |  |  |  |
Number of arrangement with different financial institution to sell customer receivables | financial_institution |  |  | 3 |  |
Funding of customer receivables sold |  |  | $ 0 | $ 0 |
Sale of customer receivables |  | $ 304 |  |  |
Cash received for receivables |  | 50 | 995 | 1,016 | $ 792
Deferred purchase price receivable |  | $ 254 | 246 | 234 |
Net cash funding received during the period |  |  | 300 |  |
Amount of cash draws under arrangement during the period |  |  | 3,558 |  |
Amount of cash repayments under arrangement during the period |  |  | (3,258) |  |
Amount of cash draws under arrangement since inception |  |  | 600 | 600 |
Amount of cash repayments under arrangement since inception |  |  | (600) | (600) |
Gross amount of receivables sold under the deferred purchase program |  |  | 48,383 |  |
Cash collections of other receivables |  |  | 47,787 |  |
Gross cash outflows from deferred purchased receivables |  |  | 6,599 | 6,375 |
Gross cash inflow from deferred purchase receivable |  |  | 6,586 | $ 6,328 |
Maximum |  |  |  |  |
Schedule Of Financial Receivables [Line Items] |  |  |  |  |
Funding of customer receivables sold |  |  | $ 400 |  |
Subsequent Event | Global Rolled Products |  |  |  |  |
Schedule Of Financial Receivables [Line Items] |  |  |  |  |
Deferred purchase price receivable | $ 282 |  |  |  |

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