Employee Benefits (Weighted Average Assumptions - Net Periodic Benefit Cost) (Details) - Other Postretirement Benefit Plan - USD ($) $ in Millions		3 Months Ended		9 Months Ended		12 Months Ended
	Jan. 01, 2016	Dec. 31, 2013		Oct. 02, 2013	[1]	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Measurement Date								October 3, 2013
Defined Benefit Plan, One Percentage Point Change, Increase or Decrease						1.00%
Defined Benefit Plan, Effect of One Percentage Point Increase on Benefit Obligations						$ 13.0
Defined Benefit Plan, Effect of One Percentage Point Increase on Service and Interest Cost Components						1.6
Defined Benefit Plan, Effect of One Percentage Point Decrease on Benefit Obligations						11.7
Defined Benefit Plan, Effect of One Percentage Point Decrease on Service and Interest Cost Components						$ 1.2
Net Periodic Benefit Costs
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate		4.90%		4.10%		4.10%	4.90%
Expected long-term return on plan assets						5.20%	5.20%	5.20%	[1]
Initial						7.25%	7.50%	7.75%	[1]
Ultimate						4.50%	4.50%	4.50%	[1]
Year ultimate reached		2026	[1]			2026	2026	2026	[1]
Subsequent Event
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected long-term return on plan assets	4.875%

[1] The Other Post-retirement Benefits Plan was remeasured at October 3, 2013 due to a plan amendment. The discount rate increased from 4.1% as of January 1, 2013 to 4.9% at the remeasurement date. All other assumptions remained consistent with assumptions used at January 1, 2013.