v3.26.1
Segment and corporate information (Details) - EUR (€)
€ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Segment and corporate information      
Revenue from contracts with customers € 4,146,394 € 4,355,504  
Revenue from insurance contracts 447,019 503,360  
Revenue from lease contracts 18,734 22,590  
Revenue 4,612,147 4,881,454  
Costs of revenue (3,432,655) (3,697,476)  
Research and development (38,309) (43,482)  
Operating income (loss) 286,195 331,390  
Interest (78,679) (80,737)  
Income before income taxes 207,516 250,653  
Depreciation and amortization (353,902) (382,597)  
Impairment loss (109,040) (11,766)  
Income (loss) from equity method investees 41,322 47,833  
Total assets 31,467,593 32,735,034 € 31,002,333
thereof investment in equity method investees 701,400 666,752 € 663,652
Additions of property, plant and equipment, intangible assets and right-of-use assets 317,818 317,708  
Healthcare services      
Segment and corporate information      
Revenue from contracts with customers 3,144,507 3,276,313  
Revenue 3,144,507 3,276,313  
Healthcare products      
Segment and corporate information      
Revenue from contracts with customers 1,001,887 1,079,191  
Revenue from lease contracts 18,734 22,590  
Revenue 1,020,621 1,101,781  
Total Segment      
Segment and corporate information      
Revenue from contracts with customers 4,146,394 4,355,504  
Revenue from insurance contracts 447,019 503,360  
Revenue from lease contracts 18,734 22,590  
Revenue 4,612,147 4,881,454  
Total Segment | Healthcare services      
Segment and corporate information      
Revenue from contracts with customers 3,144,507 3,276,313  
Total Segment | Healthcare products      
Segment and corporate information      
Revenue from contracts with customers 1,001,887 1,079,191  
Care Delivery      
Segment and corporate information      
Revenue from contracts with customers 3,172,689 3,327,744  
Revenue 3,172,689 3,327,744  
Care Delivery | Healthcare services      
Segment and corporate information      
Revenue from contracts with customers 3,101,156 3,250,182  
Care Delivery | Healthcare products      
Segment and corporate information      
Revenue from contracts with customers 71,533 77,562  
Value-Based Care      
Segment and corporate information      
Revenue from contracts with customers 43,351 26,131  
Revenue from insurance contracts 447,019 503,360  
Revenue 490,370 529,491  
Value-Based Care | Healthcare services      
Segment and corporate information      
Revenue from contracts with customers 43,351 26,131  
Care Enablement      
Segment and corporate information      
Revenue from contracts with customers 930,354 1,001,629  
Revenue from lease contracts 18,734 22,590  
Revenue 949,088 1,024,219  
Care Enablement | Healthcare products      
Segment and corporate information      
Revenue from contracts with customers 930,354 1,001,629  
Operating Segments | Total Segment      
Segment and corporate information      
Revenue 5,082,931 5,343,252  
Costs of revenue (3,884,050) (4,154,513)  
Research and development (38,230) (43,482)  
Operating income (loss) 347,419 417,547  
Depreciation and amortization (350,469) (376,393)  
Impairment loss (73,820) (11,766)  
Income (loss) from equity method investees 41,322 47,833  
Total assets 55,525,863 57,117,151  
thereof investment in equity method investees 701,400 666,752  
Additions of property, plant and equipment, intangible assets and right-of-use assets 320,945 322,128  
Operating Segments | Care Delivery      
Segment and corporate information      
Revenue 3,293,568 3,446,829  
Costs of revenue (2,546,586) (2,739,629)  
Operating income (loss) 271,188 319,997  
Depreciation and amortization (232,438) (260,606)  
Impairment loss (69,869) (7,076)  
Income (loss) from equity method investees 41,322 47,833  
Total assets 40,689,509 41,736,877  
thereof investment in equity method investees 701,400 666,752  
Additions of property, plant and equipment, intangible assets and right-of-use assets 202,666 209,736  
Operating Segments | Value-Based Care      
Segment and corporate information      
Revenue 490,370 529,491  
Costs of revenue (451,386) (492,629)  
Operating income (loss) (11,038) 3,249  
Depreciation and amortization (658) (1,241)  
Impairment loss   (2,274)  
Total assets 615,079 893,061  
Additions of property, plant and equipment, intangible assets and right-of-use assets 38 107  
Operating Segments | Care Enablement      
Segment and corporate information      
Revenue 1,298,993 1,366,932  
Costs of revenue (886,078) (922,255)  
Research and development (38,230) (43,482)  
Operating income (loss) 87,269 94,301  
Depreciation and amortization (117,373) (114,546)  
Impairment loss (3,951) (2,416)  
Total assets 14,221,275 14,487,213  
Additions of property, plant and equipment, intangible assets and right-of-use assets 118,241 112,285  
Operating Segments | Corporate      
Segment and corporate information      
Costs of revenue 2,062 556  
Research and development (79)    
Operating income (loss) (39,773) (80,840)  
Depreciation and amortization (13,483) (17,040)  
Impairment loss (35,220)    
Total assets 11,462,658 10,960,515  
Additions of property, plant and equipment, intangible assets and right-of-use assets 24,371 5,417  
Inter-segment      
Segment and corporate information      
Revenue (470,784) (461,798)  
Costs of revenue 449,333 456,481  
Operating income (loss) (21,451) (5,317)  
Depreciation and amortization 10,050 10,836  
Total assets (35,520,928) (35,342,632)  
Additions of property, plant and equipment, intangible assets and right-of-use assets (27,498) (9,837)  
Inter-segment | Total Segment      
Segment and corporate information      
Revenue (470,784) (461,798)  
Inter-segment | Care Delivery      
Segment and corporate information      
Revenue (120,879) (119,085)  
Inter-segment | Care Enablement      
Segment and corporate information      
Revenue € (349,905) € (342,713)