Retirement and Post Retirement Plans (Schedule Of Fair Value Of Plan Assets) (Details) - USD ($) $ in Millions | Jan. 02, 2016 | Jan. 03, 2015 | Dec. 28, 2013 |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | $ 162.1 | $ 126.6 | |
Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 103.8 | 81.7 | |
Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 43.8 | 33.4 | |
Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 14.5 | 11.5 | $ 10.1 |
Cash And Cash Equivalents [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 4.5 | 3.1 | |
Cash And Cash Equivalents [Member] | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 4.5 | 3.1 | |
Cash And Cash Equivalents [Member] | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Cash And Cash Equivalents [Member] | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Mutual Funds [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1 | | |
Mutual Funds [Member] | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 1 | | |
Mutual Funds [Member] | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | | |
Mutual Funds [Member] | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | | |
Domestic Equities [Member] | Common Stock [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 24.9 | 20.6 | |
Domestic Equities [Member] | Common Stock [Member] | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 24.9 | 20.6 | |
Domestic Equities [Member] | Common Stock [Member] | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Domestic Equities [Member] | Common Stock [Member] | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
International Equities [Member] | Common Stock [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 9.6 | 8 | |
International Equities [Member] | Common Stock [Member] | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 9.6 | 8 | |
International Equities [Member] | Common Stock [Member] | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
International Equities [Member] | Common Stock [Member] | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Fixed Income Funds [Member] | Common Collective Trust Funds [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 12.4 | 9.5 | |
Fixed Income Funds [Member] | Common Collective Trust Funds [Member] | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Fixed Income Funds [Member] | Common Collective Trust Funds [Member] | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 12.4 | 9.5 | |
Fixed Income Funds [Member] | Common Collective Trust Funds [Member] | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Fixed Income Funds [Member] | Mutual Funds [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 9.7 | 12.3 | |
Fixed Income Funds [Member] | Mutual Funds [Member] | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 9.7 | 12.3 | |
Fixed Income Funds [Member] | Mutual Funds [Member] | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | | |
Fixed Income Funds [Member] | Mutual Funds [Member] | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | | |
U.S. Equity Funds [Member] | Common Collective Trust Funds [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 31.4 | 23.9 | |
U.S. Equity Funds [Member] | Common Collective Trust Funds [Member] | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Equity Funds [Member] | Common Collective Trust Funds [Member] | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 31.4 | 23.9 | |
U.S. Equity Funds [Member] | Common Collective Trust Funds [Member] | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Equity Funds [Member] | Mutual Funds [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 15 | 16.8 | |
U.S. Equity Funds [Member] | Mutual Funds [Member] | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 15 | 16.8 | |
U.S. Equity Funds [Member] | Mutual Funds [Member] | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
U.S. Equity Funds [Member] | Mutual Funds [Member] | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Balanced Funds [Member] | Mutual Funds [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 22.3 | 6.1 | |
Balanced Funds [Member] | Mutual Funds [Member] | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 22.3 | 6.1 | |
Balanced Funds [Member] | Mutual Funds [Member] | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Balanced Funds [Member] | Mutual Funds [Member] | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | | |
International Equity Funds [Member] | Mutual Funds [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 16.8 | 13.8 | |
International Equity Funds [Member] | Mutual Funds [Member] | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 16.8 | 13.8 | |
International Equity Funds [Member] | Mutual Funds [Member] | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
International Equity Funds [Member] | Mutual Funds [Member] | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Other Plan Asset Category [Member] | Mutual Funds [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | | 1 | |
Other Plan Asset Category [Member] | Mutual Funds [Member] | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | | 1 | |
Other Plan Asset Category [Member] | Mutual Funds [Member] | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | | 0 | |
Other Plan Asset Category [Member] | Mutual Funds [Member] | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | | 0 | |
Real Estate Investment [Member] | Mutual Funds [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 8.1 | 6.2 | |
Real Estate Investment [Member] | Mutual Funds [Member] | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Real Estate Investment [Member] | Mutual Funds [Member] | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Real Estate Investment [Member] | Mutual Funds [Member] | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 8.1 | 6.2 | |
Global emerging markets fund limited partnership | Mutual Funds [Member] | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 6.4 | 5.3 | |
Global emerging markets fund limited partnership | Mutual Funds [Member] | Level 1 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Global emerging markets fund limited partnership | Mutual Funds [Member] | Level 2 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | 0 | 0 | |
Global emerging markets fund limited partnership | Mutual Funds [Member] | Level 3 | | | |
Defined Benefit Plan Disclosure [Line Items] | | | |
Defined Benefit Plan, Fair Value of Plan Assets | $ 6.4 | $ 5.3 | |