Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans - Level 3 Fair Value Measurements (Details)

v3.22.4
Employee Benefit Plans - Level 3 Fair Value Measurements (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Change in fair value of plan assets      
Fair value, January 1 $ 26,096    
Fair value, December 31 19,123 $ 26,096  
U.S. government and agency securities      
Change in fair value of plan assets      
Fair value, January 1 5,888    
Fair value, December 31 4,022 5,888  
Participant loans      
Change in fair value of plan assets      
Fair value, January 1 7    
Fair value, December 31 6 7  
Other investments      
Change in fair value of plan assets      
Fair value, January 1 660    
Fair value, December 31 434 660  
Level 3      
Change in fair value of plan assets      
Fair value, January 1 643 698 $ 644
Actual Return on Plan Assets Still Held at the Reporting Date (8) (5) 6
Purchases, Sales and Settlements (214) (50) 48
Fair value, December 31 421 643 698
Level 3 | U.S. government and agency securities      
Change in fair value of plan assets      
Fair value, January 1 6 7 8
Actual Return on Plan Assets Still Held at the Reporting Date 0 0 0
Purchases, Sales and Settlements (1) (1) (1)
Fair value, December 31 5 6 7
Level 3 | Participant loans      
Change in fair value of plan assets      
Fair value, January 1 7 7 8
Actual Return on Plan Assets Still Held at the Reporting Date 0 0 0
Purchases, Sales and Settlements (1) 0 (1)
Fair value, December 31 6 7 7
Level 3 | Other investments      
Change in fair value of plan assets      
Fair value, January 1 630 684 628
Actual Return on Plan Assets Still Held at the Reporting Date (8) (5) 6
Purchases, Sales and Settlements (212) (49) 50
Fair value, December 31 $ 410 $ 630 $ 684