Segment Information - Schedule of Balance Sheet Information for Reportable Segments (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	$ 6,081,241	$ 5,911,462
Goodwill	909,717	1,008,316
Corporate, Other & Eliminations
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	(1,816,376)	(1,737,383)
West Segment
Segment Reporting Asset Reconciling Item [Line Items]
Goodwill	220,934	220,861
West Segment | Operating Segment
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	1,862,752	1,710,375
Midwest Segment
Segment Reporting Asset Reconciling Item [Line Items]
Goodwill	246,056	322,745
Midwest Segment | Operating Segment
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	1,327,369	1,245,521
South Segment
Segment Reporting Asset Reconciling Item [Line Items]
Goodwill	204,791	213,150
South Segment | Operating Segment
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	1,161,263	1,068,258
East Segment
Segment Reporting Asset Reconciling Item [Line Items]
Goodwill	162,816	177,486
East Segment | Operating Segment
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	2,006,147	2,166,730
Central Segment
Segment Reporting Asset Reconciling Item [Line Items]
Goodwill	75,120	74,074
Central Segment | Operating Segment
Segment Reporting Asset Reconciling Item [Line Items]
Total assets	$ 1,540,086	$ 1,457,961