Goodwill - Changes in Carrying Value of Goodwill by Reportable Segments (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Roll Forward]
Beginning balance	$ 7,076,610	$ 7,046,241
Acquisitions	25,723	49,047
Divestitures		(3,350)
Impairment charges	(26,083)	0	$ 0
Foreign currency and other adjustments	36,310	(15,328)
Ending balance	7,112,560	7,076,610	7,046,241
Goodwill	7,261,661
Accumulated impairment charges	(149,101)
Transplant Software Reporting Unit
Goodwill [Roll Forward]
Impairment charges	(26,083)
Ending balance	14,424
U.S. dialysis
Goodwill [Roll Forward]
Beginning balance	6,416,825	6,400,162
Acquisitions	0	16,750
Divestitures		(87)
Impairment charges	0
Foreign currency and other adjustments	0	0
Ending balance	6,416,825	6,416,825	6,400,162
Goodwill	6,416,825
Accumulated impairment charges	0
Other - Ancillary services
Goodwill [Roll Forward]
Beginning balance	659,785	646,079
Acquisitions	25,723	32,297
Divestitures		(3,263)
Impairment charges	(26,083)
Foreign currency and other adjustments	36,310	(15,328)
Ending balance	695,735	$ 659,785	$ 646,079
Goodwill	844,836
Accumulated impairment charges	$ (149,101)

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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