EID Segment FN Segment Asset Reconciliation (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021
EID [Member]
Segment Reporting Information [Line Items]
Total Assets	$ 42,633	$ 42,344	$ 42,549
Segment Assets	38,290	35,698	38,148
Corporate Assets	4,343	6,646	4,401
Total Assets	$ 42,633	$ 42,344	$ 42,549