Pension Plans and Postretirement Benefits (Fair Value) (Details) - USD ($)	12 Months Ended
	Jan. 01, 2017	Jan. 03, 2016
Defined Benefit Plan Disclosure [Line Items]
Transfers between all three levels	$ 0	$ 15,300,000
Pension Benefits | Equity instruments
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation	82.00%	71.00%
Pension Benefits | Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Actual asset allocation	18.00%	29.00%
Fair Value, Measurements, Recurring | Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 485,600,000	$ 479,000,000
Fair value of plan assets, excluding investments measured at net asset value	413,500,000	455,100,000
Fair Value, Measurements, Recurring | Pension Benefits | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	198,200,000	259,100,000
Fair Value, Measurements, Recurring | Pension Benefits | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	215,300,000	196,000,000
Fair Value, Measurements, Recurring | Pension Benefits | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Measurements, Recurring | Pension Benefits | Cash and Cash Equivalents
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	39,500,000	30,300,000
Fair Value, Measurements, Recurring | Pension Benefits | Cash and Cash Equivalents | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Measurements, Recurring | Pension Benefits | Cash and Cash Equivalents | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	39,500,000	30,300,000
Fair Value, Measurements, Recurring | Pension Benefits | Cash and Cash Equivalents | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Measurements, Recurring | Pension Benefits | Equity instruments
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	230,200,000	254,900,000
Investments measured at net asset value	147,200,000	180,900,000
Fair Value, Measurements, Recurring | Pension Benefits | Equity instruments | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	152,000,000	185,500,000
Fair Value, Measurements, Recurring | Pension Benefits | Equity instruments | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	78,200,000	69,400,000
Fair Value, Measurements, Recurring | Pension Benefits | Equity instruments | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Measurements, Recurring | Pension Benefits | Alternatives
Defined Benefit Plan Disclosure [Line Items]
Investments measured at net asset value	148,500,000	110,900,000
Fair Value, Measurements, Recurring | Pension Benefits | Mutual funds
Defined Benefit Plan Disclosure [Line Items]
Investments measured at net asset value	136,400,000	135,200,000
Fair Value, Measurements, Recurring | Pension Benefits | U.S. government securities and futures
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	46,300,000	73,700,000
Fair Value, Measurements, Recurring | Pension Benefits | U.S. government securities and futures | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	46,200,000	73,600,000
Fair Value, Measurements, Recurring | Pension Benefits | U.S. government securities and futures | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	100,000	100,000
Fair Value, Measurements, Recurring | Pension Benefits | U.S. government securities and futures | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Measurements, Recurring | Pension Benefits | Corporate bonds
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	84,800,000	81,400,000
Investments measured at net asset value	19,400,000	20,400,000
Fair Value, Measurements, Recurring | Pension Benefits | Corporate bonds | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Measurements, Recurring | Pension Benefits | Corporate bonds | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	84,800,000	81,400,000
Fair Value, Measurements, Recurring | Pension Benefits | Corporate bonds | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Measurements, Recurring | Pension Benefits | Senior secured loans
Defined Benefit Plan Disclosure [Line Items]
Investments measured at net asset value	4,400,000	4,000,000
Fair Value, Measurements, Recurring | Pension Benefits | Mortgage-backed securities
Defined Benefit Plan Disclosure [Line Items]
Investments measured at net asset value	16,500,000	15,900,000
Fair Value, Measurements, Recurring | Pension Benefits | High-yield bonds
Defined Benefit Plan Disclosure [Line Items]
Investments measured at net asset value	13,200,000	11,700,000
Fair Value, Measurements, Recurring | Pension Benefits | Insurance contracts related to foreign plans
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	12,700,000	14,800,000
Fair Value, Measurements, Recurring | Pension Benefits | Insurance contracts related to foreign plans | Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	0	0
Fair Value, Measurements, Recurring | Pension Benefits | Insurance contracts related to foreign plans | Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	12,700,000	14,800,000
Fair Value, Measurements, Recurring | Pension Benefits | Insurance contracts related to foreign plans | Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 0	$ 0