Retirement and Post Retirement Health Care Plans (Level 3 Plan Assets) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2016	Jan. 02, 2016
Change in Fair Value of Plan Assets:
Fair Value of Plan Assets at Beginning of Period	$ 162.1
Fair Value of Plan Assets at End of Period	160.3	$ 162.1
Level 3
Change in Fair Value of Plan Assets:
Fair Value of Plan Assets at Beginning of Period	8.1	6.2
Acquisition	0.0	1.0
Net Purchases	1.7	0.2
Net Gains	0.2	0.7
Fair Value of Plan Assets at End of Period	10.0	8.1
Real Estate [Member]
Change in Fair Value of Plan Assets:
Fair Value	$ 10.0	$ 8.1
Minimum [Member] \| Level 3
Change in Fair Value of Plan Assets:
Fair Value Inputs, Exit Capitalization Rate	4.90%	4.90%
Fair Value Inputs, Discount Rate	6.60%	6.60%
Maximum [Member] \| Level 3
Change in Fair Value of Plan Assets:
Fair Value Inputs, Exit Capitalization Rate	7.00%	7.00%
Fair Value Inputs, Discount Rate	8.00%	8.30%

Fair Value Inputs, Exit Capitalization Rate

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- Definition

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 30
-Section 35
-Paragraph 50
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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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- Definition

Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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- Definition

Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Amount of gain (loss) recognized in other comprehensive income (loss) for financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

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