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Investment in AB InBev (Details) - USD ($) shares in Millions |  | 9 Months Ended |
--- | --- | --- | ---
Oct. 25, 2018 | Sep. 30, 2018 | Dec. 31, 2017
Schedule of Equity Method Investments [Line Items] |  |  |
Carrying value of equity investment |  | $ 17,825,000,000 | $ 17,952,000,000
AB InBev [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership percentage |  | 10.10% |
Number of restricted shares owned (in shares) |  | 185 |
Number of ordinary shares owned (in shares) |  | 12 |
Fair value of equity investment |  | $ 17,200,000,000 | 22,100,000,000
Carrying value of equity investment |  | 17,800,000,000 | $ 18,000,000,000
Impairment of equity investment |  | $ 0 |
Subsequent Event [Member] | AB InBev [Member] |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Fair value of equity investment | $ 14,500,000,000 |  |
Equity Method Investments, Dividend Rate Rebase | 50.00% |  |

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