Goodwill - Changes in Carrying Value of Goodwill by Reportable Segments (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Goodwill [Roll Forward]
Beginning balance	$ 7,112,560	$ 7,076,610
Acquisitions	349,069	25,723
Goodwill, Written off Related to Sale of Business Unit	(3,193)
Impairment charges	0	(26,083)	$ 0
Foreign currency and other adjustments	(83,220)	36,310
Ending balance	7,375,216	7,112,560	7,076,610
Goodwill	7,517,037
Accumulated impairment charges	(141,821)
Transplant Software Reporting Unit
Goodwill [Roll Forward]
Beginning balance	14,424
Impairment charges		(26,083)
Ending balance		14,424
U.S. dialysis
Goodwill [Roll Forward]
Beginning balance	6,416,825	6,416,825
Acquisitions	102,082	0
Goodwill, Written off Related to Sale of Business Unit	(1,687)
Impairment charges		0
Foreign currency and other adjustments	0	0
Ending balance	6,517,220	6,416,825	6,416,825
Goodwill	6,517,220
Accumulated impairment charges	0
Other - Ancillary services
Goodwill [Roll Forward]
Beginning balance	695,735	659,785
Acquisitions	246,987	25,723
Goodwill, Written off Related to Sale of Business Unit	(1,506)
Impairment charges		(26,083)
Foreign currency and other adjustments	(83,220)	36,310
Ending balance	857,996	$ 695,735	$ 659,785
Goodwill	999,817
Accumulated impairment charges	$ (141,821)

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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