Revenue Recognition (Contract Assets and Liabilities) (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Capitalized Contract Cost [Line Items]
Contract asset	$ 8,108	$ 7,816
Contract liability	4,472	4,409
Contract liability balance - current portion	4,330	4,266
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Capitalized Contract Cost [Line Items]
Contract liability balance - current portion	4,194	4,136
Balance Sheet Location [Axis]: us-gaap:PrepaidExpenseAndOtherAssetsCurrent
Capitalized Contract Cost [Line Items]
Contract asset balance - current portion	$ 4,320	$ 4,131

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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