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Debt - Credit Agreement - Additional Information (Detail) - Credit Agreement [Member] - Revolving Credit Facility [Member] - USD ($)
1 Months Ended 3 Months Ended
Jun. 30, 2020
Jun. 30, 2015
Mar. 31, 2020
Debt Instrument [Line Items]      
Senior asset-based revolving credit agreement, increase in total lender commitments     $ 100,000,000
Senior asset-based revolving credit agreement, total lender commitments $ 2,328,000,000   $ 2,525,000,000
Commitments original term     2023-07
Senior asset-based revolving credit agreement, lender commitments expired $ 197,000,000    
Syndicate of Banks [Member] | LIBOR [Member]      
Debt Instrument [Line Items]      
Line of credit, additional interest rate   1.00%  
Syndicate of Banks [Member] | Undrawn amounts interest rate [Member]      
Debt Instrument [Line Items]      
Line of credit, additional interest rate   0.25%  
Syndicate of Banks [Member] | Federal Funds Purchased [Member]      
Debt Instrument [Line Items]      
Line of credit, additional interest rate   0.50%