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Segment Information - Summary of Financial Information by Operating Segment, Goodwill (Detail) $ in Thousands | 3 Months Ended
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Mar. 31, 2020 USD ($)
Goodwill: |
Goodwill | $ 2,775,006
Accumulated impairment loss | (325,875)
Net goodwill, beginning balance | 2,449,131
Prior period purchase price adjustments | (13)
Foreign currency translation gain | (22,418)
Goodwill | 2,752,575
Accumulated impairment loss | (325,875)
Net goodwill, ending balance | 2,426,700
U.S. Facilities [Member] | Operating Segment [Member] |
Goodwill: |
Goodwill | 2,085,104
Net goodwill, beginning balance | 2,085,104
Prior period purchase price adjustments | (13)
Goodwill | 2,085,091
Net goodwill, ending balance | 2,085,091
U.K. Facilities [Member] | Operating Segment [Member] |
Goodwill: |
Goodwill | 689,902
Accumulated impairment loss | (325,875)
Net goodwill, beginning balance | 364,027
Foreign currency translation gain | (22,418)
Goodwill | 667,484
Accumulated impairment loss | (325,875)
Net goodwill, ending balance | $ 341,609

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