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Pension Plans - Net Periodic Pension Cost (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Jan. 02, 2016
Jan. 03, 2015
Defined Benefit Plan Disclosure [Line Items]      
Service cost $ 19.3 $ 20.0  
Interest cost 56.5 53.2  
Pension Plans, Defined Benefit [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Service cost 19.3 20.0 $ 18.0
Interest cost 56.5 53.2 57.3
Expected return on plan assets (81.0) (79.0) (73.3)
Amortization of unrecognized loss 31.3 38.6 22.8
Amortization of prior service credit (1.1) (0.9) (0.8)
Net periodic benefit cost 25.0 31.9 24.0
Net loss 43.3 6.3 72.0
Prior service cost 0.6 0.7 0.5
Total recognized in OCI $ 43.9 $ 7.0 $ 72.5