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Short-term and Long-term Debt - Short-term and Long-term Debt (Detail) - USD ($)
Dec. 31, 2016
Jan. 02, 2016
Schedule Of Debt Instruments [Line Items]    
Other debt $ 160,200,000 $ 30,100,000
Unsecured notes 150,000,000  
Long-term debt including current maturities 1,010,200,000 880,100,000
Less: notes payable and current maturities of long-term debt:    
Current maturities of long-term debt (150,000,000)  
Commercial paper borrowings (130,000,000) (0.0)
Other notes (21,400,000) (18,400,000)
Notes payable and current maturities of long-term debt (301,400,000) (18,400,000)
Total long-term debt 708,800,000 861,700,000
Long-term debt including current maturities 1,010,200,000 880,100,000
5.50% Unsecured Notes Due 2017 [Member]    
Schedule Of Debt Instruments [Line Items]    
Unsecured notes 150,000,000 150,000,000
Less: notes payable and current maturities of long-term debt:    
Current maturities of long-term debt (150,000,000) (150,000,000)
4.25% Unsecured Notes Due 2018 [Member]    
Schedule Of Debt Instruments [Line Items]    
Unsecured notes 250,000,000 250,000,000
6.70% Unsecured Notes Due 2019 [Member]    
Schedule Of Debt Instruments [Line Items]    
Unsecured notes 200,000,000 200,000,000
6.125% Unsecured Notes Due 2021 [Member]    
Schedule Of Debt Instruments [Line Items]    
Unsecured notes $ 250,000,000 $ 250,000,000