Litigation, Claims, Contingencies and Other - Narrative (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) Agreement	Jun. 30, 2018 USD ($)
Loss Contingencies [Line Items]
Legal settlement			$ 8,500,000
Environmental remediation liability	$ 2,300,000		2,300,000
Maximum potential amount of future payments	54,500,000		$ 54,500,000
Guarantees relate to facilities leased by the company			2034-08
Recourse provision to recover guarantees	0		$ 0
Bargaining agreements | Agreement			100
Multiemployer plans, withdrawal obligation	15,500,000		$ 15,500,000
Self insurance reserve	16,000,000.0		16,000,000.0
Workers' compensation liability	11,100,000		11,100,000
Self insurance reserve for general and auto	4,900,000		4,900,000
Self insurance reserve on discontinued operations	2,700,000		2,700,000
Estimated employee health benefit claims incurred but not yet reported	1,500,000		1,500,000
Payments for self insurance	1,500,000	$ 1,200,000	3,300,000	$ 2,700,000
Self insurance reserve in which company is the primary obligor	9,200,000		9,200,000
Self insurance reserve in which company is the primary obligor for workers compensation	8,500,000		8,500,000
Self insurance reserve in which company is the primary obligor for general liability	700,000		700,000
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
GES
Loss Contingencies [Line Items]
Legal settlement			$ 8,500,000