Pension Plans and Postretirement Benefits (Fair Value) (Details) - USD ($) $ in Millions		12 Months Ended
		Jan. 03, 2016		Dec. 28, 2014
Defined Benefit Plan Disclosure [Line Items]
Transfers between all three levels		$ 15.3
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		934.2	[1]	$ 1,005.1	[2]
Pension Benefits | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		370.8	[1]	464.6	[2]
Pension Benefits | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		561.2	[1]	536.7	[2]
Pension Benefits | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		2.2	[1]	3.8	[2]
Pension Benefits | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[3]	30.3	[1]	57.2	[2]
Pension Benefits | Cash and Cash Equivalents | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[3]	0.0	[1]	0.0	[2]
Pension Benefits | Cash and Cash Equivalents | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[3]	30.3	[1]	57.2	[2]
Pension Benefits | Cash and Cash Equivalents | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	[3]	$ 0.0	[1]	$ 0.0	[2]
Pension Benefits | Equity instruments
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation		82.00%		75.00%
Pension Benefits | U.S. equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		$ 241.9	[1]	$ 282.1	[2]
Pension Benefits | U.S. equity | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		147.5	[1]	183.5	[2]
Pension Benefits | U.S. equity | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		94.4	[1]	98.6	[2]
Pension Benefits | U.S. equity | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0	[1]	0.0	[2]
Pension Benefits | International equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		193.9	[1]	140.8	[2]
Pension Benefits | International equity | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		38.0	[1]	37.0	[2]
Pension Benefits | International equity | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		155.9	[1]	101.9	[2]
Pension Benefits | International equity | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0	[1]	1.9	[2]
Pension Benefits | International equity
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		110.9	[1]	117.1	[2]
Pension Benefits | International equity | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0	[1]	0.0	[2]
Pension Benefits | International equity | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		108.7	[1]	115.2	[2]
Pension Benefits | International equity | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		2.2	[1]	1.9	[2]
Pension Benefits | Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		$ 135.4	[1],[4]	$ 174.8	[2],[5]
Actual asset allocation		18.00%		25.00%
Pension Benefits | Mutual funds | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		$ 111.7	[1],[4]	$ 166.8	[2],[5]
Pension Benefits | Mutual funds | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		23.7	[1],[4]	8.0	[2],[5]
Pension Benefits | Mutual funds | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0	[1],[4]	0.0	[2],[5]
Pension Benefits | U.S. government securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		73.2	[1]	77.6	[2]
Pension Benefits | U.S. government securities | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		73.1	[1]	77.6	[2]
Pension Benefits | U.S. government securities | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.1	[1]	0.0	[2]
Pension Benefits | U.S. government securities | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0	[1]	0.0	[2]
Pension Benefits | U.S. government futures
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.5	[1]	(0.3)	[2]
Pension Benefits | U.S. government futures | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.5	[1]	(0.3)	[2]
Pension Benefits | U.S. government futures | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0	[1]	0.0	[2]
Pension Benefits | U.S. government futures | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0	[1]	0.0	[2]
Pension Benefits | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		101.7	[1]	107.3	[2]
Pension Benefits | Corporate bonds | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0	[1]	0.0	[2]
Pension Benefits | Corporate bonds | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		101.7	[1]	107.3	[2]
Pension Benefits | Corporate bonds | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0	[1]	0.0	[2]
Pension Benefits | Senior secured loans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		4.0	[1]	4.1	[2]
Pension Benefits | Senior secured loans | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0	[1]	0.0	[2]
Pension Benefits | Senior secured loans | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		4.0	[1]	4.1	[2]
Pension Benefits | Senior secured loans | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0	[1]	0.0	[2]
Pension Benefits | Mortgage-backed securities
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		15.9	[1]	15.6	[2]
Pension Benefits | Mortgage-backed securities | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0	[1]	0.0	[2]
Pension Benefits | Mortgage-backed securities | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		15.9	[1]	15.6	[2]
Pension Benefits | Mortgage-backed securities | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0	[1]	0.0	[2]
Pension Benefits | High-yield bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		11.7	[1]	12.9	[2]
Pension Benefits | High-yield bonds | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0	[1]	0.0	[2]
Pension Benefits | High-yield bonds | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		11.7	[1]	12.9	[2]
Pension Benefits | High-yield bonds | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0	[1]	0.0	[2]
Pension Benefits | Insurance contracts related to foreign plans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		14.8	[1]	15.9	[2]
Pension Benefits | Insurance contracts related to foreign plans | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		0.0	[1]	0.0	[2]
Pension Benefits | Insurance contracts related to foreign plans | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		14.8	[1]	15.9	[2]
Pension Benefits | Insurance contracts related to foreign plans | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		$ 0.0	[1]	$ 0.0	[2]

[1] There were $15.3 million of transfers of plan assets between the three levels of the fair value hierarchy during the year

[2] There were no transfers of plan assets between the three levels of the fair value hierarchy during the year

[3] Reflects cash and cash equivalents held in overnight cash investments.

[4] 18% of mutual funds invest in fixed income types of securities; 82% invest in equity securities

[5] 25% of mutual funds invest in fixed income types of securities; 75% invest in equity securities