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Investment in AB InBev/SABMiller (Narrative) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2016 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Oct. 09, 2016 | Sep. 30, 2016
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Earnings from equity investment |  | $ 795 | $ 757 | $ 1,006 |  |
Earnings (loss) before income taxes |  | 21,852 | 8,078 | 7,774 |  |
SABMiller Plc [Member] |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Equity method investment, ownership percentage (approximately) |  |  |  |  | 27.00% | 27.00%
Earnings from equity investment |  | $ 795 | 757 | $ 1,006 |  |
SABMiller Plc [Member] | Reported Value Measurement [Member] |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Fair value of investment |  |  | 5,500 |  |  |
SABMiller Plc [Member] | Level 1 [Member] | Estimate of Fair Value Measurement [Member] |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Fair value of investment |  |  | $ 25,800 |  |  |
SABMiller Plc [Member] | The Coca-Cola Company and Gutsche Family Investments [Member] |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Earnings from equity investment | $ 309 |  |  |  |  |

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