Segment Reporting Segment Asset Reconciliation (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022	Jun. 30, 2022
Segment Reporting [Abstract]
Segment Assets	$ 39,294	$ 37,049	$ 36,289
Corporate Assets	4,895	5,569	4,617
Total Assets	$ 44,189	$ 42,618	$ 40,906

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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