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Goodwill and Other Intangible Assets (Goodwill Roll Forward) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Goodwill [Roll Forward] |  |  |  |
Goodwill | $ 3,750 | $ 3,750 | $ 3,788 |
Accumulated impairment losses | (3,388) | (3,388) | (2,611) |
Net balance | 362 | 362 | 1,177 |
Goodwill impairment expense | (777) | (777) | 0 | $ 0
Goodwill, Acquired During Period |  | 3 |  |
Goodwill, Written off Related to Sale of Business Unit |  | (41) |  |
Operating Segments [Member] | MCAC [Member] |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Goodwill | 16 | 16 | 16 |
Accumulated impairment losses | 0 | 0 | 0 |
Net balance | 16 | 16 | 16 |
Goodwill impairment expense |  | 0 |  |
Goodwill, Acquired During Period |  | 0 |  |
Goodwill, Written off Related to Sale of Business Unit |  | 0 |  |
Operating Segments [Member] | EURASIA [Member] |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Goodwill | 0 | 0 | 0 |
Accumulated impairment losses | 0 | 0 | 0 |
Net balance | 0 | 0 | 0 |
Goodwill impairment expense |  | 0 |  |
Goodwill, Acquired During Period |  | 0 |  |
Goodwill, Written off Related to Sale of Business Unit |  | 0 |  |
Operating Segments [Member] | US and Utilities SBU |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Goodwill | 3,087 | 3,087 | 3,127 |
Accumulated impairment losses | (2,744) | (2,744) | (2,611) |
Net balance | 343 | 343 | 516 |
Goodwill impairment expense |  | 133 |  |
Goodwill, Acquired During Period |  | 0 |  |
Goodwill, Written off Related to Sale of Business Unit |  | (40) |  |
Operating Segments [Member] | South America |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Goodwill | 644 | 644 | 644 |
Accumulated impairment losses | (644) | (644) | 0 |
Net balance | 0 | 0 | 644 |
Goodwill impairment expense |  | 644 |  |
Goodwill, Acquired During Period |  | 0 |  |
Goodwill, Written off Related to Sale of Business Unit |  | 0 |  |
Operating Segments [Member] | Corporate and Other |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Goodwill | 3 | 3 | 1 |
Accumulated impairment losses | 0 | 0 | 0 |
Net balance | $ 3 | 3 | $ 1 |
Goodwill impairment expense |  | 0 |  |
Goodwill, Acquired During Period |  | 3 |  |
Goodwill, Written off Related to Sale of Business Unit |  | $ (1) |  |

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