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Acquisitions and Dispositions (Sale of Hope) (Narrative) (Detail) - USD ($)
$ in Millions
3 Months Ended
Feb. 02, 2022
Mar. 31, 2022
Mar. 31, 2021
Business Acquisition And Dispositions [Line Items]      
Income tax expense   $ 236 $ 212
Ullico Inc      
Business Acquisition And Dispositions [Line Items]      
Percentage of equity interests expected to be sold 100.00%    
Cash consideration from sale of equity interest $ 690    
Income tax expense   87  
Disposal group, recognized a pre-tax gain   60  
Goodwill write-off   108  
Disposal group, recognized a gain on disposal after tax   $ 40