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Income Taxes (Narrative) (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Line Items]        
Income (loss) before noncontrolling interests, Domestic $ 1,500 $ 850 $ 857  
Income (loss) before noncontrolling interests, Foreign $ 93 $ 73 $ 48  
Federal income tax rates 21.00% 21.00% 21.00%  
Effective income tax rates 23.90% 24.10% 21.60%  
Payroll taxes $ 5 $ 12    
Tax benefits recorded 2 4 $ 3  
Foreign tax credit carryover net of valuation allowance 4      
Operating loss carryforwards, amount 63      
Operating loss carryforwards, indefinite expiration, amount 23      
Operating loss carryforwards, subject to expiration, amount 40      
Deferred tax asset valuation allowance 8 9    
Liability for income taxes associated with uncertain tax positions 8 7 1 $ 13
Offsetting tax benefits related to uncertain tax positions 3 2    
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued 0 0 0  
Other Income Tax Expense (Benefit), Continuing Operations $ 0 0 $ 0  
Unrecognized tax positions increase decrease, months It is reasonably possible that the amount of the unrecognized benefit with respect to certain of the Company’s unrecognized tax positions may increase or decrease within the next 12 months.  Any such change may be the result of ongoing audits or the expiration of federal and state statutes of limitations for the assessment of taxes.      
Deferred Tax Assets Valuation Allowances On Net Operating Loss Carryforwards        
Income Tax Disclosure [Line Items]        
Deferred tax asset valuation allowance $ 7 8    
Deferred Tax Assets Valuation Allowances On Other Deferred Tax Assets        
Income Tax Disclosure [Line Items]        
Deferred tax asset valuation allowance   1    
State and Local Jurisdiction        
Income Tax Disclosure [Line Items]        
Operating loss carryforwards, amount 31      
Foreign Tax Authority        
Income Tax Disclosure [Line Items]        
Operating loss carryforwards, amount $ 32      
Coronavirus Aid Relief And Economic Security Act        
Income Tax Disclosure [Line Items]        
Deferred payroll taxes remittance payment period description The Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”), which was signed into law in 2020, allows employers to defer payment of a portion of payroll taxes otherwise due on wages paid between the enactment date and December 31, 2020 and remit the deferred payroll taxes on December 31, 2021 and December 31, 2022.      
Deferred payroll taxes $ 22 49    
Payroll taxes $ 5 $ 12