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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Segment Information (Narrative) (Details) $ in Millions	12 Months Ended
Segment Information (Narrative) (Details) $ in Millions	Dec. 31, 2021 USD ($) Segment	Dec. 31, 2020 USD ($)	Dec. 31, 2019
Segment Reporting [Abstract]
Number of segments \| Segment	5
Segment Reporting Information [Line Items]
Total assets	$ 759,708	$ 795,146
Japan
Segment Reporting Information [Line Items]
Total assets	$ 142,700	$ 146,000
Assets, Total \| Geographic Concentration Risk \| Japan
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	19.00%	18.00%
Customer Concentration Risk
Segment Reporting Information [Line Items]
Concentration Risk, Benchmark Description	10	10	10