Other Revenues and Other Expenses Other Revenues (Narrative) (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Revenue from Contract with Customer [Abstract]
Receivables related to revenues from service contracts from customers	$ 393	$ 272

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 946
-SubTopic 310
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
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-Topic 954
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