Comprehensive Income (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Oct. 01, 2016
Oct. 03, 2015
Oct. 01, 2016
Oct. 03, 2015
Comprehensive Income [Abstract]        
Net earnings $ 85.4 $ 75.9 $ 258.3 $ 250.7
Foreign currency cumulative translation adjustment 0.7 (9.8) 10.2 (32.0)
Net change in unamortized prior service credits (0.1) (0.2) (0.3) (0.6)
Net change in unamortized actuarial loss 2.7 3.4 7.9 10.4
Net change in unrealized derivative losses 0.0 1.7 (3.7) (0.1)
Total other comprehensive income (loss) 3.3 (4.9) 14.1 (22.3)
Comprehensive income 88.7 71.0 272.4 228.4
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Accumulated other comprehensive loss, net of tax, Beginning balance (463.3) (497.9) (474.1) (480.5)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]        
Other comprehensive income (loss) before reclassifications 0.7 [1] (6.3) [2] 7.7 [1] (24.5) [2]
Amounts reclassified from Accumulated other comprehensive loss 2.6 [3] 1.4 [4] 6.4 [3] 2.2 [4]
Net current-period other comprehensive income (loss) 3.3 (4.9) 14.1 (22.3)
Accumulated other comprehensive loss, net of tax, Ending balance (460.0) (502.8) (460.0) (502.8)
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent [Abstract]        
Foreign currency translation adjustments arising during period, tax effect 0.1 0.7 2.3 (2.9)
Net actuarial gains (losses) arising during period, tax effect 0.0 (0.1) (0.2) (0.3)
Gains (losses) on derivatives arising during period, tax effect 0.2 (1.3) 1.2 (2.9)
Foreign currency translation        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Accumulated other comprehensive loss, net of tax, Beginning balance (46.9) (36.7) (56.4) (14.5)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]        
Other comprehensive income (loss) before reclassifications 0.7 [1] (9.8) [2] 10.2 [1] (32.0) [2]
Amounts reclassified from Accumulated other comprehensive loss 0.0 [3] 0.0 [4] 0.0 [3] 0.0 [4]
Net current-period other comprehensive income (loss) 0.7 (9.8) 10.2 (32.0)
Accumulated other comprehensive loss, net of tax, Ending balance (46.2) (46.5) (46.2) (46.5)
Prior service credits        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Accumulated other comprehensive loss, net of tax, Beginning balance (4.9) (4.3) (4.7) (3.9)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]        
Other comprehensive income (loss) before reclassifications 0.0 [1] 0.0 [2] 0.0 [1] 0.0 [2]
Amounts reclassified from Accumulated other comprehensive loss (0.1) [3] (0.2) [4] (0.3) [3] (0.6) [4]
Net current-period other comprehensive income (loss) (0.1) (0.2) (0.3) (0.6)
Accumulated other comprehensive loss, net of tax, Ending balance (5.0) (4.5) (5.0) (4.5)
Net actuarial losses        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Accumulated other comprehensive loss, net of tax, Beginning balance (401.9) (449.6) (407.1) (456.6)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]        
Other comprehensive income (loss) before reclassifications 0.0 [1] 0.1 [2] (0.5) [1] 0.6 [2]
Amounts reclassified from Accumulated other comprehensive loss 2.7 [3] 3.3 [4] 8.4 [3] 9.8 [4]
Net current-period other comprehensive income (loss) 2.7 3.4 7.9 10.4
Accumulated other comprehensive loss, net of tax, Ending balance (399.2) (446.2) (399.2) (446.2)
Net derivative losses        
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]        
Accumulated other comprehensive loss, net of tax, Beginning balance (9.6) (7.3) (5.9) (5.5)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax [Abstract]        
Other comprehensive income (loss) before reclassifications 0.0 [1] 3.4 [2] (2.0) [1] 6.9 [2]
Amounts reclassified from Accumulated other comprehensive loss 0.0 [3] (1.7) [4] (1.7) [3] (7.0) [4]
Net current-period other comprehensive income (loss) 0.0 1.7 (3.7) (0.1)
Accumulated other comprehensive loss, net of tax, Ending balance $ (9.6) $ (5.6) $ (9.6) $ (5.6)
[1] The tax effects for the nine months ended October 1, 2016 were $2.3 million for foreign currency translation, $(0.2) million for net actuarial losses arising during the period and $1.2 million for derivatives.
[2] The tax effects for the nine months ended October 3, 2015 were $(2.9) million for foreign currency translation, $(0.3) million for net actuarial losses arising during the period and $(2.9) million for derivatives.
[3] See the table below for the tax effects for the nine months ended October 1, 2016.
[4] See the table below for the tax effects for the nine months ended October 3, 2015.