Significant Accounting and Reporting Policies New Accounting Pronouncements (Details) - USD ($) $ in Millions	Dec. 31, 2015	Mar. 29, 2015
New Accounting Pronouncement, Early Adoption, Effect [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred Tax Assets, Net , Current	$ 12.2
Deferred Tax Liabilities, Net, Current	40.8
Accounting Standards Update 2015-03 [Member] | Long-term Debt [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred finance costs net	19.7	$ 23.0
Accounting Standards Update 2015-03 [Member] | Other Assets [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred finance costs net	$ (19.7)	$ (23.0)