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Investment in AB InBev/SABMiller (Narrative) (Details) - USD ($) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Oct. 10, 2016 | Oct. 09, 2016 | Sep. 30, 2016
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Earnings from equity investment | $ 532,000,000 | $ 795,000,000 | $ 757,000,000 |  |  |
AB InBev [Member] |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Equity method investment, ownership percentage (approximately) | 10.20% | 10.20% |  | 9.60% |  |
Ordinary shares owned/purchased (in shares) | 12,000,000 |  |  |  |  |
Earnings from equity investment | $ 532,000,000 | $ 0 |  |  |  |
AB InBev [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Fair value of investment | 22,100,000,000 | 20,900,000,000 |  |  |  |
AB InBev [Member] | Reported Value Measurement [Member] |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Fair value of investment | $ 18,000,000,000 | 17,900,000,000 |  |  |  |
SABMiller Plc [Member] |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Equity method investment, ownership percentage (approximately) |  |  |  |  | 27.00% | 27.00%
Ordinary shares owned/purchased (in shares) |  |  |  | 430,000,000 |  |
Earnings from equity investment |  | 795,000,000 | $ 757,000,000 |  |  |
SABMiller Plc [Member] | The Coca-Cola Company and Gutsche Family Investments [Member] |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Earnings from equity investment |  | $ 309,000,000 |  |  |  |
Restricted Stock [Member] | AB InBev [Member] |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Equity interest issued or issuable, number of shares | 185,000,000 |  |  |  |  |

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