Debt and Financing Arrangements (Interest Rate Derivatives) (Details)	Dec. 31, 2018 USD ($)
June 29, 2018
Derivative [Line Items]
Notional Amount (in millions)	$ 250,000,000
Fixed Rate	1.662%
June 28, 2019
Derivative [Line Items]
Notional Amount (in millions)	$ 200,000,000
Fixed Rate	1.952%
June 30, 2020
Derivative [Line Items]
Notional Amount (in millions)	$ 150,000,000
Fixed Rate	2.182%