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Goodwill and Other Intangible Assets (Goodwill Roll Forward) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Goodwill [Roll Forward] |  |  |  |
Goodwill | $ 3,912 | $ 3,896 |  | $ 3,954
Accumulated impairment losses | (2,755) | (2,438) |  | (2,332)
Net balance | 1,157 | 1,458 |  | 1,622
Goodwill impairment expense | (317) | (164) |  | (372)
Goodwill, Acquired During Period | 16 |  |  |
Ebute [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill, Written off Related to Sale of Business Unit |  | 58 |  |
US |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Goodwill | 2,674 | 2,658 |  | 2,658
Accumulated impairment losses | (2,633) | (2,316) |  | (2,152)
Net balance | 41 | 342 |  | 506
Goodwill impairment expense | (317) | (164) |  |
Goodwill, Acquired During Period | 16 |  |  |
Andes |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Goodwill | 899 | 899 |  | 899
Accumulated impairment losses | 0 | 0 |  | 0
Net balance | 899 | 899 |  | 899
Goodwill impairment expense | 0 | 0 |  |
Goodwill, Acquired During Period | 0 |  |  |
MCAC |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Goodwill | 149 | 149 |  | 149
Accumulated impairment losses | 0 | 0 |  | 0
Net balance | 149 | 149 |  | 149
Goodwill impairment expense | 0 | 0 |  |
Goodwill, Acquired During Period | 0 |  |  |
Europe |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Goodwill | 122 | 122 | [1] | 180
Accumulated impairment losses | (122) | (122) |  | (180)
Net balance | 0 | 0 |  | 0
Goodwill impairment expense | 0 | 0 |  |
Goodwill, Acquired During Period | 0 |  |  |
Asia |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Goodwill | 68 | 68 |  | 68
Accumulated impairment losses | 0 | 0 |  | 0
Net balance | 68 | 68 |  | $ 68
Goodwill impairment expense | 0 | $ 0 |  |
Goodwill, Acquired During Period | $ 0 |  |  |
[1] | (1) Both the gross carrying amount and the accumulated impairment losses of the Europe segment have been reduced by $58 million with no impact on the net carrying amount for the segment. This relates to Ebute, which had fully impaired goodwill of $58 million and was sold in 2014.

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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 -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 + Details
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