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Business Developments And Risks And Uncertainties (Narrative) (Detail)
$ in Millions
3 Months Ended 6 Months Ended
Jul. 01, 2023
USD ($)
Jan. 01, 2023
USD ($)
Mar. 31, 2023
USD ($)
Jun. 30, 2023
USD ($)
segments
Jun. 26, 2023
USD ($)
Business Acquisition [Line Items]          
Number of operating segments | segments       3  
Correction of error income (loss) from discontinued operations, net of tax     $ 18    
Noncontrolling Interest [Member]          
Business Acquisition [Line Items]          
Correction of error income (loss) from discontinued operations, net of tax     $ 8    
Puerto Rico Electric Power Authority [Member]          
Business Acquisition [Line Items]          
Outstanding bonds       $ 926  
Maximum [Member]          
Business Acquisition [Line Items]          
Liabilities Subject to Compromise, Provision for Expected and Allowed Claims         $ 7,600
Minimum [Member]          
Business Acquisition [Line Items]          
Liabilities Subject to Compromise, Provision for Expected and Allowed Claims         $ 2,388
Puerto Rico [Member]          
Business Acquisition [Line Items]          
Outstanding bonds       $ 1,000  
Puerto Rico [Member] | National Public Finance Guarantee Corporation [Member]          
Business Acquisition [Line Items]          
Claims payments   $ 18      
Puerto Rico [Member] | Subsequent Event [Member] | National Public Finance Guarantee Corporation [Member]          
Business Acquisition [Line Items]          
Claims payments $ 119