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Employee Benefit Plans (Schedule of Defined Benefit Plans Disclosures) (Details) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Change in Benefit Obligation [Roll Forward]      
Projected Benefit Obligation, Beginning of Period $ 1,750,000,000 $ 2,437,000,000  
Service cost 22,000,000 36,000,000 $ 41,000,000
Interest cost 92,000,000 59,000,000 51,000,000
Actuarial Gains (Losses) 63,000,000 (585,000,000)  
Defined Benefit Plan, Benefit Obligation, Benefits Paid (140,000,000) (116,000,000)  
Administration Expenses (3,000,000) (3,000,000)  
Plan Settlements (58,000,000) (78,000,000)  
Projected Benefit Obligation, End of Period 1,726,000,000 1,750,000,000 2,437,000,000
Change in Plan Assets [Roll Forward]      
Fair Value of Plan Assets, beginning of period 1,970,000,000 2,554,000,000  
Actual Return on Plan Assets (101,000,000) 404,000,000  
Company Contributions 66,000,000 17,000,000  
Defined Benefit Plan, Plan Assets, Benefits Paid (140,000,000) (116,000,000)  
Administration Expenses (3,000,000) (3,000,000)  
Plan Settlements (58,000,000) (78,000,000)  
Fair Value of Plan Assets, end of period 1,936,000,000 1,970,000,000 2,554,000,000
Funded Status and Accrued Benefit Cost at Measurement Date 210,000,000 220,000,000  
Amount recognized in the Consolidated Balance Sheets:      
Other assets (liabilities) 210,000,000 220,000,000  
Pre-tax amounts recognized in Accumulated Other Comprehensive (Income) Loss:      
Net actuarial loss 609,000,000 573,000,000  
Qualified Plan [Member] | Pension Plan [Member]      
Change in Benefit Obligation [Roll Forward]      
Projected Benefit Obligation, Beginning of Period 1,623,000,000 2,281,000,000  
Service cost 21,000,000 34,000,000 38,000,000
Interest cost 86,000,000 56,000,000 49,000,000
Actuarial Gains (Losses) 49,000,000 (568,000,000)  
Defined Benefit Plan, Benefit Obligation, Benefits Paid (132,000,000) (108,000,000)  
Administration Expenses (3,000,000) (3,000,000)  
Plan Settlements 0 (69,000,000)  
Projected Benefit Obligation, End of Period 1,644,000,000 1,623,000,000 2,281,000,000
Change in Plan Assets [Roll Forward]      
Fair Value of Plan Assets, beginning of period 1,970,000,000 2,554,000,000  
Actual Return on Plan Assets (101,000,000) 404,000,000  
Company Contributions 0 0  
Defined Benefit Plan, Plan Assets, Benefits Paid (132,000,000) (108,000,000)  
Administration Expenses (3,000,000) (3,000,000)  
Plan Settlements 0 (69,000,000)  
Fair Value of Plan Assets, end of period 1,936,000,000 1,970,000,000 2,554,000,000
Funded Status and Accrued Benefit Cost at Measurement Date 292,000,000 347,000,000  
Amount recognized in the Consolidated Balance Sheets:      
Other assets (liabilities) 292,000,000 347,000,000  
Pre-tax amounts recognized in Accumulated Other Comprehensive (Income) Loss:      
Net actuarial loss 580,000,000 537,000,000  
Nonqualified Plan [Member] | Supplemental Employee Retirement Plan [Member]      
Change in Benefit Obligation [Roll Forward]      
Projected Benefit Obligation, Beginning of Period 127,000,000 156,000,000  
Service cost 1,000,000 2,000,000 3,000,000
Interest cost 6,000,000 3,000,000 2,000,000
Actuarial Gains (Losses) 14,000,000 (17,000,000)  
Defined Benefit Plan, Benefit Obligation, Benefits Paid (8,000,000) (8,000,000)  
Administration Expenses 0 0  
Plan Settlements (58,000,000) (9,000,000)  
Projected Benefit Obligation, End of Period 82,000,000 127,000,000 156,000,000
Change in Plan Assets [Roll Forward]      
Fair Value of Plan Assets, beginning of period 0 0  
Actual Return on Plan Assets 0 0  
Company Contributions 66,000,000 17,000,000  
Defined Benefit Plan, Plan Assets, Benefits Paid (8,000,000) (8,000,000)  
Administration Expenses 0 0  
Plan Settlements (58,000,000) (9,000,000)  
Fair Value of Plan Assets, end of period 0 0 $ 0
Funded Status and Accrued Benefit Cost at Measurement Date (82,000,000) (127,000,000)  
Amount recognized in the Consolidated Balance Sheets:      
Other assets (liabilities) (82,000,000) (127,000,000)  
Pre-tax amounts recognized in Accumulated Other Comprehensive (Income) Loss:      
Net actuarial loss 29,000,000 36,000,000  
Other Assets [Member]      
Amount recognized in the Consolidated Balance Sheets:      
Other assets (liabilities) 292,000,000 347,000,000  
Other Assets [Member] | Qualified Plan [Member] | Pension Plan [Member]      
Amount recognized in the Consolidated Balance Sheets:      
Other assets (liabilities) 292,000,000 347,000,000  
Other Assets [Member] | Nonqualified Plan [Member] | Supplemental Employee Retirement Plan [Member]      
Amount recognized in the Consolidated Balance Sheets:      
Other assets (liabilities) 0 0  
Other Liabilities [Member]      
Amount recognized in the Consolidated Balance Sheets:      
Other assets (liabilities) (82,000,000) (127,000,000)  
Other Liabilities [Member] | Qualified Plan [Member] | Pension Plan [Member]      
Amount recognized in the Consolidated Balance Sheets:      
Other assets (liabilities) 0 0  
Other Liabilities [Member] | Nonqualified Plan [Member] | Supplemental Employee Retirement Plan [Member]      
Amount recognized in the Consolidated Balance Sheets:      
Other assets (liabilities) $ (82,000,000) $ (127,000,000)