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Contingencies and Commitments (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Charges during period | $ 103 |  |
Payments during period | 221 |  |
Lease expense | 133 | $ 130 | $ 133
Minimum |  |  |
Estimate of possible loss | 385 |  |
Maximum |  |  |
Estimate of possible loss | $ 520 |  |

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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977 + Details
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