EID Segment FN Segment Asset Reconciliation (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020
EID [Member]
Segment Reporting Information [Line Items]
Total Assets	$ 41,496	$ 42,649	$ 42,180
Segment Assets	36,800	36,850	37,390
Corporate Assets	4,696	5,799	4,790
Total Assets	$ 41,496	$ 42,649	$ 42,180

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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+ Details