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Other Credit Arrangements - Additional Information (Detail) - Credit Agreement - USD ($)
1 Months Ended
Jan. 31, 2019
Feb. 01, 2020
Credit Facilities    
Line Of Credit Facility [Line Items]    
Line of credit facility, expiration period 5 years  
Borrowing agreements with financial institutions $ 400,000,000  
Stand-by Letters of Credit    
Line Of Credit Facility [Line Items]    
Letters of credit outstanding amount   $ 7,900,000
Credit Agreement Loans    
Line Of Credit Facility [Line Items]    
Outstanding borrowings   $ 0