Litigation, Claims, Contingencies and Other - Narrative (Details)	3 Months Ended	6 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 30, 2016 USD ($) Agreement
Loss Contingencies [Line Items]
Environmental remediation liability	$ 4,300,000	$ 4,300,000
Maximum potential amount of future payments	9,000,000	$ 9,000,000
Guarantees relate to facilities leased by the company		2021-03
Recourse provision to recover guarantees	0	$ 0
Bargaining agreements | Agreement		100
Self insurance reserve	20,800,000	$ 20,800,000
Workers' compensation liability	13,700,000	13,700,000
Self insurance reserve for general and auto	7,100,000	7,100,000
Self insurance reserve on discontinued operations	4,000,000	4,000,000
Payments for self insurance	1,400,000	2,400,000
Self insurance reserve in which company is the primary obligor	6,000,000	6,000,000
Self insurance reserve in which company is the primary obligor for workers compensation	2,500,000	2,500,000
Self insurance reserve in which company is the primary obligor for general liability	3,500,000	3,500,000
Minimum
Loss Contingencies [Line Items]
General range on claims	200,000	200,000
Maximum
Loss Contingencies [Line Items]
General range on claims	$ 500,000	$ 500,000