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Goodwill and Other Intangible Assets (Goodwill Roll Forward) (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020
Goodwill [Roll Forward] |  |
Goodwill | $ 3,788 | $ 3,672
Accumulated impairment losses | (2,611) | (2,611)
Net balance | 1,177 | 1,061
Goodwill, Acquired During Period | 340 |
Goodwill, Written off Related to Sale of Business Unit | (224) |
Operating Segments [Member] | MCAC [Member] |  |
Goodwill [Roll Forward] |  |
Goodwill | 16 | 16
Accumulated impairment losses | 0 | 0
Net balance | 16 | 16
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
Accumulated impairment losses | 0 | 0
Net balance | 0 | 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 | 3,127 | 2,788
Accumulated impairment losses | (2,611) | (2,611)
Net balance | 516 | 177
Goodwill, Acquired During Period | 339 |
Goodwill, Written off Related to Sale of Business Unit | 0 |
Operating Segments [Member] | South America |  |
Goodwill [Roll Forward] |  |
Goodwill | 644 | 868
Accumulated impairment losses | 0 | 0
Net balance | 644 | 868
Goodwill, Acquired During Period | 0 |
Goodwill, Written off Related to Sale of Business Unit | (224) |
Operating Segments [Member] | Corporate and Other |  |
Goodwill [Roll Forward] |  |
Goodwill | 1 | 0
Accumulated impairment losses | 0 | 0
Net balance | 1 | $ 0
Goodwill, Acquired During Period | 1 |
Goodwill, Written off Related to Sale of Business Unit | $ 0 |

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