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Goodwill, Net (Details) - USD ($) $ in Thousands	9 Months Ended
Goodwill, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Goodwill			$ 2,294,421
Accumulated impairment losses			(7,525)
Goodwill, net	$ 2,286,896
Measurement period adjustments	8
Acquisition	12,584
Translation adjustments	(612)
Goodwill, net	2,286,896	$ 2,298,876	2,286,896
Discontinued Operations, Disposed of by Sale
Goodwill [Roll Forward]
Goodwill, net		109,200	109,200
PIRM
Goodwill [Roll Forward]
Goodwill			1,078,225
Accumulated impairment losses			(600)
Goodwill, net	1,077,625
Measurement period adjustments	0
Acquisition	12,584
Translation adjustments	(612)
Goodwill, net	1,077,625	1,089,597	1,077,625
PIRM \| Discontinued Operations, Disposed of by Sale
Goodwill [Roll Forward]
Goodwill, net		29,269	29,269
UWS
Goodwill [Roll Forward]
Goodwill			1,216,196
Accumulated impairment losses			(6,925)
Goodwill, net	1,209,271
Measurement period adjustments	8
Acquisition	0
Translation adjustments	0
Goodwill, net	$ 1,209,271	1,209,279	1,209,271
UWS \| Discontinued Operations, Disposed of by Sale
Goodwill [Roll Forward]
Goodwill, net		$ 79,931	$ 79,931