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Segments and Geographic Information Segment and Geographic Information (Assets, Depreciation and Amortization and Capital Expenditures ) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Segment Reporting Information [Line Items] |  |  |
Total Assets | $ 33,112 | $ 36,124 | $ 36,545
Depreciation and Amortization | 1,169 | 1,176 | 1,144
Capital Expenditures | 2,356 | 2,458 | 2,458
Interest Income | 244 | 245 | 256
Interest Expense | 1,170 | 1,134 | 1,145
Investments in and Advances to Affiliates | 1,197 | 621 | 610
Net Equity in Earnings of Affiliates | 71 | 36 | 105
Operating Segments [Member] | US SBU |  |  |
Segment Reporting Information [Line Items] |  |  |
Total Assets | 9,852 | 9,333 | 9,800
Depreciation and Amortization | 437 | 471 | 443
Capital Expenditures | 858 | 809 | 861
Interest Income | 0 | 0 | 0
Interest Expense | 258 | 236 | 262
Investments in and Advances to Affiliates | 527 | 23 | 1
Net Equity in Earnings of Affiliates | 41 | 9 | 0
Operating Segments [Member] | Andes SBU |  |  |
Segment Reporting Information [Line Items] |  |  |
Total Assets | 8,840 | 8,971 | 8,594
Depreciation and Amortization | 250 | 218 | 175
Capital Expenditures | 443 | 538 | 949
Interest Income | 50 | 57 | 77
Interest Expense | 205 | 178 | 154
Investments in and Advances to Affiliates | 358 | 363 | 345
Net Equity in Earnings of Affiliates | 28 | 15 | 83
Operating Segments [Member] | Brazil SBU |  |  |
Segment Reporting Information [Line Items] |  |  |
Total Assets | 2,034 | 1,516 | 1,179
Depreciation and Amortization | 51 | 33 | 39
Capital Expenditures | 34 | 31 | 47
Interest Income | 45 | 38 | 31
Interest Expense | 92 | 69 | 58
Operating Segments [Member] | MCAC SBU |  |  |
Segment Reporting Information [Line Items] |  |  |
Total Assets | 5,532 | 5,162 | 4,820
Depreciation and Amortization | 172 | 165 | 155
Capital Expenditures | 482 | 480 | 201
Interest Income | 18 | 11 | 30
Interest Expense | 168 | 163 | 179
Investments in and Advances to Affiliates | 3 | (1) | 0
Net Equity in Earnings of Affiliates | (4) | (2) | 0
Operating Segments [Member] | EURASIA [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total Assets | 4,557 | 5,777 | 6,200
Depreciation and Amortization | 127 | 149 | 166
Capital Expenditures | 211 | 279 | 131
Interest Income | 130 | 139 | 116
Interest Expense | 167 | 179 | 158
Investments in and Advances to Affiliates | 307 | 236 | 248
Net Equity in Earnings of Affiliates | 9 | 13 | 18
Segment Reconciling Items [Member] | Assets held-for-sale |  |  |
Segment Reporting Information [Line Items] |  |  |
Total Assets | 2,034 | 4,936 | 5,411
Depreciation and Amortization | 123 | 128 | 146
Capital Expenditures | 315 | 303 | 252
Corporate, Non-Segment [Member] | Corporate and Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Total Assets | 263 | 429 | 541
Depreciation and Amortization | 9 | 12 | 20
Capital Expenditures | 13 | 18 | 17
Interest Income | 1 | 0 | 2
Interest Expense | 280 | 309 | 334
Investments in and Advances to Affiliates | 2 | 0 | 16
Net Equity in Earnings of Affiliates | $ (3) | $ 1 | $ 4

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