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Equity Method Investments and Variable Interest Entities (Schedule of Equity in Earnings of Unconsolidated Affiliates) (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |
Beginning balance at January 1, |  | $ 881 |  |
Equity in earnings (losses) of unconsolidated affiliates |  | (170) | $ 30 | $ 35
Distributions of earnings of unconsolidated affiliates |  | (47) | (38) | (69)
Investments |  | 29 | 26 | 146
Balance at December 31, |  | 576 | 881 |
Amount allocated to fund ownership venture |  |  | 24 |
Sustainable Technology Solutions |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |
Beginning balance at January 1, |  | 736 |  |
Equity in earnings (losses) of unconsolidated affiliates |  | (199) | 2 | 6
Impairment of equity method investments |  |  | (6) |
Balance at December 31, |  | 450 | 736 |
Impairment of equity method investments |  |  | 6 |
Ebic Ammonia Project |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |
Impairment of equity method investments |  |  | (13) |
Sale of equity method investment | $ (39) |  |  |
Impairment of equity method investments |  |  | 13 |
Equity method investment | 39 |  |  |
Cash proceeds | 43 |  |  |
Gain on disposal | 4 |  |  |
Payment of proportionate share of sale of equity method investment to noncontrolling interest | 15 |  |  |
Ebic Ammonia Project | NCI |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |
Portion of gain attributable to noncontrolling interest | $ 1 |  |  |
Equity Method Investments |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |
Beginning balance at January 1, |  | 881 | 846 |
Equity in earnings (losses) of unconsolidated affiliates |  | (170) | 30 |
Distributions of earnings of unconsolidated affiliates |  | (72) | (38) |
Advances to (payments from) unconsolidated affiliates, net |  | (17) | (15) |
Investments |  | 29 | 26 |
Impairment of equity method investments |  | 0 | (19) |
Sale of equity method investment |  | (39) | 0 |
Foreign currency translation adjustments |  | (10) | 50 |
Other |  | (26) | 1 |
Balance at December 31, |  | 576 | 881 | $ 846
Amount allocated to fund ownership venture |  | 26 |  |
Impairment of equity method investments |  | 0 | 19 |
Equity method investment |  | $ 39 | $ 0 |

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- Definition Amount of distribution received from equity method investee for return on investment, classified as operating activities. Excludes distribution for return of investment, classified as investing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(10)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(12)) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 21D -URI http://asc.fasb.org/extlink&oid=123570139&loc=SL94080555-108585 + Details
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