Noncontrolling Interests - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Net earnings attributable to noncontrolling interests	$ (10,300)	$ (14,200)	$ 18,900	$ (31,500)
Less: Net earnings attributable to noncontrolling interests from discontinued operations	(2,185)	(4,481)	(7,803)	(9,013)
Income tax expense	490,077	28,710	368,289	39,260
Distributions paid to noncontrolling interests			26,123	34,688
Capital contributions by noncontrolling interests			10,581	4,293
ASC 810-10-45
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Net earnings attributable to noncontrolling interests	10,000	14,000	(19,000)	32,000
Less: Net earnings attributable to noncontrolling interests from discontinued operations	$ 2,000	$ 5,000	8,000	9,000
Distributions paid to noncontrolling interests			26,000	35,000
Capital contributions by noncontrolling interests			$ 11,000	$ 4,000