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Segment Information - Summary of Financial Information by Operating Segment, Goodwill (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Goodwill: |  |
Goodwill | $ 2,722,287 | $ 2,751,174
Accumulated impairment loss | (325,875) |
Net goodwill, beginning balance | 2,396,412 | 2,751,174
Loss on impairment |  | (325,875)
Increase from contribution of redeemable noncontrolling interests | 3,300 | 2,245
Increase from 2019 acquisitions | 36,967 |
Foreign currency translation loss | 12,452 | (31,894)
Prior year purchase price adjustments |  | 762
Goodwill | 2,775,006 | 2,722,287
Accumulated impairment loss | (325,875) | (325,875)
Net goodwill, ending balance | 2,449,131 | 2,396,412
U.S. Facilities [Member] | Operating Segment [Member] |  |
Goodwill: |  |
Goodwill | 2,044,837 | 2,042,592
Net goodwill, beginning balance | 2,044,837 | 2,042,592
Increase from contribution of redeemable noncontrolling interests | 3,300 | 2,245
Increase from 2019 acquisitions | 36,967 |
Goodwill | 2,085,104 | 2,044,837
Net goodwill, ending balance | 2,085,104 | 2,044,837
U.K. Facilities [Member] | Operating Segment [Member] |  |
Goodwill: |  |
Goodwill | 677,450 | 708,582
Accumulated impairment loss | (325,875) |
Net goodwill, beginning balance | 351,575 | 708,582
Loss on impairment |  | (325,875)
Foreign currency translation loss | 12,452 | (31,894)
Prior year purchase price adjustments |  | 762
Goodwill | 689,902 | 677,450
Accumulated impairment loss | (325,875) | (325,875)
Net goodwill, ending balance | $ 364,027 | $ 351,575

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