Restructuring Plans (Details)			3 Months Ended	6 Months Ended	23 Months Ended
	Feb. 21, 2017 USD ($)	Feb. 05, 2015 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges incurred to date			$ 2,700,000	$ 2,700,000
Corporate Relocation Plan
Restructuring Cost and Reserve [Line Items]
Restructuring, number of positions affected		350
Restructuring charges				0
Expected restructuring and related costs					$ 31,000,000
Restructuring charges incurred to date			31,500,000	31,500,000
Employee-related
Restructuring Cost and Reserve [Line Items]
Payments				1,100,000
Expected cost remaining			1,000,000	1,000,000
Employee-related | Corporate Relocation Plan
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related costs		$ 18,000,000
Restructuring charges incurred to date			17,100,000	17,100,000
Employee-related | DSD Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges			0	24,000
Restructuring Reserve			100,000	100,000
Facility Closing | Corporate Relocation Plan
Restructuring Cost and Reserve [Line Items]
Accelerated depreciation					2,300,000
Sale Leaseback Transaction, monthly rent, after lease extension					$ 1,400,000
Expected restructuring and related costs		5,000,000
Restructuring charges incurred to date			7,000,000	7,000,000
Other Restructuring
Restructuring Cost and Reserve [Line Items]
Payments				1,600,000
Expected cost remaining			2,200,000	2,200,000
Other Restructuring | Corporate Relocation Plan
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related costs		$ 8,000,000
Restructuring charges incurred to date			7,400,000	7,400,000
Other Restructuring | DSD Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 100,000	$ 200,000
Minimum | DSD Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related costs	$ 3,700,000
Minimum | Employee-related | DSD Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related costs	1,900,000
Minimum | Other Restructuring | DSD Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related costs	1,800,000
Maximum | DSD Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related costs	4,900,000
Maximum | Employee-related | DSD Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related costs	2,700,000
Maximum | Other Restructuring | DSD Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Expected restructuring and related costs	$ 2,200,000