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Goodwill and Other Intangible Assets (Goodwill Roll Forward) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Goodwill [Roll Forward] |  |  |
Goodwill | $ 3,814 | $ 3,912 |
Accumulated impairment losses | (2,755) | (2,755) |
Net balance | 1,059 | 1,157 |
Goodwill impairment expense | 0 | 0 | $ (317)
Goodwill, Transfers | (98) |  |
US |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill | 2,674 | 2,674 |
Accumulated impairment losses | (2,633) | (2,633) |
Net balance | 41 | 41 |
Goodwill, Transfers | 0 |  |
Andes |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill | 869 | 899 |
Accumulated impairment losses | 0 | 0 |
Net balance | 869 | 899 |
Goodwill, Transfers | (30) |  |
MCAC |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill | 149 | 149 |
Accumulated impairment losses | 0 | 0 |
Net balance | 149 | 149 |
Goodwill, Acquired During Period | 0 |  |
Eurasia |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill | 122 | 190 |
Accumulated impairment losses | (122) | (122) |
Net balance | 0 | $ 68 |
Goodwill, Transfers | $ (68) |  |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 + Details
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