Acquisitions (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2025	Jun. 30, 2026	May 30, 2025	Apr. 01, 2025	Jan. 30, 2025	Dec. 02, 2024
Business Combination [Line Items]
Net Intangible	$ 2,385	$ 2,473		$ 2,473
Goodwill	$ 9,711	9,691		9,691
Weighted- Average Remaining Amortization Period (Years)	7 years
Trademarks, trade names and patents
Business Combination [Line Items]
Net Intangible	$ 863	881		881
Weighted- Average Remaining Amortization Period (Years)	8 years
Noncompete Agreements
Business Combination [Line Items]
Net Intangible	$ 49	51		51
Weighted- Average Remaining Amortization Period (Years)	4 years
ADS
Business Combination [Line Items]
Payments to Acquire Businesses, Gross		$ 1,000
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived							$ 500
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent	$ 14
Business Combination, Recognized Asset Acquired, Receivable, Current	101
Business Combination, Recognized Asset Acquired, Inventory, Current							78
Business Combination, Recognized Asset Acquired, Other Asset, Current	8
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment							1
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent							377
Business Combination, Recognized Liability Assumed, Accounts Payable, Current							(104)
Business Combination, Recognized Liability Assumed, Long-Term Debt, Current							0
Business Combination, Recognized Liability Assumed, Other Liability, Current	(488)
Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent							0
Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent	(13)
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less)	474
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value							0
Goodwill	575
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill	1,049
Business Combination, Acquisition-Related Cost, Expense	$ 3
ADS | Minimum | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow
Business Combination [Line Items]
Intangible Assets Measurement Input	700.00%
ADS | Maximum | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow
Business Combination [Line Items]
Intangible Assets Measurement Input	20.00%
ADS | Customer-Related Intangible Assets
Business Combination [Line Items]
Net Intangible							472
ADS | Customer-Related Intangible Assets | Minimum
Business Combination [Line Items]
Weighted- Average Remaining Amortization Period (Years)	10 years
ADS | Customer-Related Intangible Assets | Maximum
Business Combination [Line Items]
Weighted- Average Remaining Amortization Period (Years)	20 years
ADS | Trademarks, trade names and patents
Business Combination [Line Items]
Net Intangible							28
ADS | Trademarks, trade names and patents | Minimum
Business Combination [Line Items]
Weighted- Average Remaining Amortization Period (Years)	2 years
ADS | Trademarks, trade names and patents | Maximum
Business Combination [Line Items]
Weighted- Average Remaining Amortization Period (Years)	10 years
ADS | Noncompete Agreements
Business Combination [Line Items]
Net Intangible							$ 0
GIA
Business Combination [Line Items]
Payments to Acquire Businesses, Gross			$ 2,800
Business Combination, Voting Equity Interest Acquired, Percentage								73.00%
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived								$ 223
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent								53
Business Combination, Recognized Asset Acquired, Receivable, Current								191
Business Combination, Recognized Asset Acquired, Inventory, Current								21
Business Combination, Recognized Asset Acquired, Other Asset, Current								13
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment								75
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent								312
Business Combination, Recognized Liability Assumed, Accounts Payable, Current								(89)
Business Combination, Recognized Liability Assumed, Long-Term Debt, Current								(1)
Business Combination, Recognized Liability Assumed, Other Liability, Current								(173)
Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent								(15)
Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent								(915)
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less)								(305)
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value								0
Goodwill								3,090
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill								2,785
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value				$ 739
Discount Rate, fair value inputs		9.50%		9.50%
Business Combination, Acquisition-Related Cost, Expense	$ 11
GIA | Minimum | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow
Business Combination [Line Items]
Intangible Assets Measurement Input	700.00%
GIA | Maximum | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow
Business Combination [Line Items]
Intangible Assets Measurement Input	20.00%
GIA | Customer-Related Intangible Assets
Business Combination [Line Items]
Net Intangible								0
GIA | Trademarks, trade names and patents
Business Combination [Line Items]
Net Intangible								200
GIA | Trademarks, trade names and patents | Minimum
Business Combination [Line Items]
Weighted- Average Remaining Amortization Period (Years)	2 years
GIA | Trademarks, trade names and patents | Maximum
Business Combination [Line Items]
Weighted- Average Remaining Amortization Period (Years)	10 years
GIA | Noncompete Agreements
Business Combination [Line Items]
Net Intangible								$ 23
Weighted- Average Remaining Amortization Period (Years)	4 years
Urology America
Business Combination [Line Items]
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived						$ 33
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent						4
Business Combination, Recognized Asset Acquired, Receivable, Current						23
Business Combination, Recognized Asset Acquired, Inventory, Current						3
Business Combination, Recognized Asset Acquired, Other Asset, Current						3
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment						28
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent						41
Business Combination, Recognized Liability Assumed, Accounts Payable, Current						(20)
Business Combination, Recognized Liability Assumed, Long-Term Debt, Current						0
Business Combination, Recognized Liability Assumed, Other Liability, Current						(11)
Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent						(6)
Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent						(46)
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less)						52
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value						(9)
Goodwill						338
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill, Less Noncontrolling Interest						381
Urology America | Minimum | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow
Business Combination [Line Items]
Intangible Assets Measurement Input	700.00%
Urology America | Maximum | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow
Business Combination [Line Items]
Intangible Assets Measurement Input	20.00%
Urology America | Customer-Related Intangible Assets
Business Combination [Line Items]
Net Intangible						0
Urology America | Trademarks, trade names and patents
Business Combination [Line Items]
Net Intangible						33
Urology America | Trademarks, trade names and patents | Minimum
Business Combination [Line Items]
Weighted- Average Remaining Amortization Period (Years)	2 years
Urology America | Trademarks, trade names and patents | Maximum
Business Combination [Line Items]
Weighted- Average Remaining Amortization Period (Years)	10 years
Urology America | Noncompete Agreements
Business Combination [Line Items]
Net Intangible						$ 0
ION
Business Combination [Line Items]
Payments to Acquire Businesses, Gross	$ 1,100
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived									$ 299
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent									8
Business Combination, Recognized Asset Acquired, Receivable, Current									59
Business Combination, Recognized Asset Acquired, Inventory, Current									4
Business Combination, Recognized Asset Acquired, Other Asset, Current									5
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment									39
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent									52
Business Combination, Recognized Liability Assumed, Accounts Payable, Current									(10)
Business Combination, Recognized Liability Assumed, Long-Term Debt, Current									(3)
Business Combination, Recognized Liability Assumed, Other Liability, Current									(40)
Business Combination, Recognized Liability Assumed, Long-Term Debt, Noncurrent									(14)
Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent									(90)
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less)									309
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value									(121)
Goodwill									881
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less), and Goodwill, Less Noncontrolling Interest									1,069
Business Combination, Acquisition-Related Cost, Expense	$ 1
ION | Minimum | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow
Business Combination [Line Items]
Intangible Assets Measurement Input	700.00%
ION | Maximum | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow
Business Combination [Line Items]
Intangible Assets Measurement Input	20.00%
ION | Customer-Related Intangible Assets
Business Combination [Line Items]
Net Intangible									226
ION | Customer-Related Intangible Assets | Minimum
Business Combination [Line Items]
Weighted- Average Remaining Amortization Period (Years)	10 years
ION | Customer-Related Intangible Assets | Maximum
Business Combination [Line Items]
Weighted- Average Remaining Amortization Period (Years)	20 years
ION | Trademarks, trade names and patents
Business Combination [Line Items]
Net Intangible									73
ION | Trademarks, trade names and patents | Minimum
Business Combination [Line Items]
Weighted- Average Remaining Amortization Period (Years)	2 years
ION | Trademarks, trade names and patents | Maximum
Business Combination [Line Items]
Weighted- Average Remaining Amortization Period (Years)	10 years
ION | Noncompete Agreements
Business Combination [Line Items]
Net Intangible									$ 0
Solaris Health
Business Combination [Line Items]
Payments to Acquire Businesses, Gross	$ 1,900
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 500
Specialty Alliance | Subsequent Event
Business Combination [Line Items]
Business Combination, Voting Equity Interest Acquired, Percentage					75.00%