Summary of Significant Accounting Policies (Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Millions		3 Months Ended								12 Months Ended
		Dec. 29, 2019	Sep. 29, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 30, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning stockholders’ equity					$ 2,229.7				$ 1,947.3	$ 2,229.7	$ 1,947.3	$ 1,554.4
Other comprehensive income (loss) before reclassifications										38.7	(78.5)
Amounts reclassified from AOCI										(21.3)	(37.8)
Other comprehensive income (loss)	[1]									17.4	(116.3)	121.9
Reclassification of stranded income tax effects							$ 47.6				(47.6)
Ending stockholders' equity		$ 2,714.7				$ 2,229.7				2,714.7	2,229.7	1,947.3
Gain on cash flow hedges:
Cost of sales		505.1	$ 487.7	$ 463.6	463.9	459.6	446.2	$ 447.0	438.2	1,920.3	1,791.0	1,624.0
Income tax impact		13.8	16.7	23.3	17.6	16.0	9.9	18.5	15.7	71.4	60.1	59.8
Total		115.7	106.7	104.6	75.3	91.1	90.3	85.9	66.5	402.3	333.8	227.2
Amortization of defined benefit pension and postretirement plan items:
Income before income taxes		129.5	$ 123.4	$ 127.9	92.9	107.1	$ 100.2	$ 104.4	82.2	473.7	393.9	287.0
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning stockholders’ equity					(181.5)				(102.0)	(181.5)	(102.0)
Other comprehensive income (loss) before reclassifications										31.1	(79.5)
Amounts reclassified from AOCI										0.0	0.0
Other comprehensive income (loss)										31.1	(79.5)
Reclassification of stranded income tax effects											0.0
Ending stockholders' equity		(150.4)				(181.5)				(150.4)	(181.5)	(102.0)
Cash Flow Hedges and other
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning stockholders’ equity					(4.9)				0.5	(4.9)	0.5
Other comprehensive income (loss) before reclassifications										7.6	1.0
Amounts reclassified from AOCI										(5.0)	(6.4)
Other comprehensive income (loss)										2.6	(5.4)
Reclassification of stranded income tax effects											0.0
Ending stockholders' equity		(2.3)				(4.9)				(2.3)	(4.9)	0.5
Cash Flow Hedges and other | Reclassification out of Accumulated Other Comprehensive Income
Gain on cash flow hedges:
Cost of sales										(6.9)	(8.7)
Income tax impact										1.9	2.3
Total										(5.0)	(6.4)
Amortization of prior service cost | Reclassification out of Accumulated Other Comprehensive Income
Amortization of defined benefit pension and postretirement plan items:
Income before income taxes										(5.9)	(6.1)
Amortization of net actuarial loss | Reclassification out of Accumulated Other Comprehensive Income
Amortization of defined benefit pension and postretirement plan items:
Income before income taxes										30.9	31.5
Pension adjustments | Reclassification out of Accumulated Other Comprehensive Income
Amortization of defined benefit pension and postretirement plan items:
Income before income taxes										(47.1)	(66.6)
Pension and Postretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning stockholders’ equity					(306.8)				(227.8)	(306.8)	(227.8)
Other comprehensive income (loss) before reclassifications										0.0	0.0
Amounts reclassified from AOCI										(16.3)	(31.4)
Other comprehensive income (loss)										(16.3)	(31.4)
Reclassification of stranded income tax effects											(47.6)
Ending stockholders' equity		(323.1)				(306.8)				(323.1)	(306.8)	(227.8)
Pension and Postretirement Benefits | Reclassification out of Accumulated Other Comprehensive Income
Gain on cash flow hedges:
Income tax impact										(5.8)	(9.8)
Amortization of defined benefit pension and postretirement plan items:
Income before income taxes										(22.1)	(41.2)
Net of tax										(16.3)	(31.4)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning stockholders’ equity					$ (493.2)				$ (329.3)	(493.2)	(329.3)	(451.2)
Other comprehensive income (loss)										17.4	(116.3)	121.9
Ending stockholders' equity		$ (475.8)				$ (493.2)				$ (475.8)	$ (493.2)	$ (329.3)

[1] Net of income tax benefit of $6.6 million in 2019, income tax benefit of $10.6 million for 2018 and income tax expense of $12.7 million for 2017.