Business Combinations and Asset Acquisitions (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended		12 Months Ended
	Dec. 31, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024	Jun. 30, 2025	Nov. 03, 2025	May 30, 2025	Apr. 01, 2025	Jan. 30, 2025	Dec. 02, 2024
Business Combination [Line Items]
Finite-Lived Intangible Assets, Net	$ 2,355	$ 2,473			$ 2,355		$ 2,473
Goodwill	11,609	9,691			11,609		9,691
Goodwill	$ 11,609	$ 9,691			$ 11,609		$ 9,691
Finite-Lived Intangible Assets, Remaining Amortization Period	9 years				9 years
Solaris Health
Business Combination [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	5 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested	$ 500
GIA Common Stock
Business Combination [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition					3 years		2 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested	66
ION
Business Combination [Line Items]
Payments to Acquire Businesses, Gross				$ 1,100
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived												$ 73
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent												10
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities												(3)
Business Combination, Recognized Asset Acquired, Receivable, Current												58
Business Combination, Recognized Asset Acquired, Inventory, Current												20
Business Combination, Recognized Asset Acquired, Prepaid Expense and Other Asset, Current												7
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment												39
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent												45
Business Combination, Recognized Liability Assumed, Accounts Payable, Current												(10)
Business Combination, Recognized Liability Assumed, Other Liability, Current												(41)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities												(14)
Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent												(50)
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less)												134
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value												(157)
Goodwill												1,092
Goodwill												1,092
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net												$ 1,069
Business Combination, Acquisition-Related Cost, Expense	$ 1			$ 18	$ 2	$ 20
ION | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow
Business Combination [Line Items]
Intangible Assets Measurement Input	7.00%
GIA [Member]
Business Combination [Line Items]
Payments to Acquire Businesses, Gross			$ 2,800
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived											$ 223
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent											53
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities											(1)
Business Combination, Recognized Asset Acquired, Receivable, Current											175
Business Combination, Recognized Asset Acquired, Inventory, Current											21
Business Combination, Recognized Asset Acquired, Prepaid Expense and Other Asset, Current											13
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment											67
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent											319
Business Combination, Recognized Liability Assumed, Accounts Payable, Current											(89)
Business Combination, Recognized Liability Assumed, Other Liability, Current											(176)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities											(15)
Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent											(889)
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less)											(299)
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value											0
Goodwill											3,084
Goodwill											3,084
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net											$ 2,785
Business Combination, Acquisition-Related Cost, Expense	$ 2				7
Business Combination, Voting Equity Interest Acquired, Percentage											73.00%
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%
GIA [Member] | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow
Business Combination [Line Items]
Intangible Assets Measurement Input	20.00%
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 Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities									0
Business Combination, Recognized Asset Acquired, Receivable, Current									23
Business Combination, Recognized Asset Acquired, Inventory, Current									3
Business Combination, Recognized Asset Acquired, Prepaid Expense and 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, Other Liability, Current									(12)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities									(6)
Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent									(45)
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)
Goodwill									(338)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net									$ 381
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 Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities										0
Business Combination, Recognized Asset Acquired, Receivable, Current										100
Business Combination, Recognized Asset Acquired, Inventory, Current										78
Business Combination, Recognized Asset Acquired, Prepaid Expense and Other Asset, Current										7
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, Other Liability, Current										(397)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities										0
Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent										(105)
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less)										471
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value										0
Goodwill										578
Goodwill										578
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net										1,049
Business Combination, Acquisition-Related Cost, Expense	$ 3				7
Solaris Health
Business Combination [Line Items]
Payments to Acquire Businesses, Gross	1,900
Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived								$ 278
Business Combination, Recognized Asset Acquired, Cash and Cash Equivalent								55
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities								0
Business Combination, Recognized Asset Acquired, Receivable, Current								249
Business Combination, Recognized Asset Acquired, Inventory, Current								23
Business Combination, Recognized Asset Acquired, Prepaid Expense and Other Asset, Current								73
Business Combination, Recognized Asset Acquired, Property, Plant, and Equipment								54
Business Combination, Recognized Asset Acquired, Other Asset, Noncurrent								191
Business Combination, Recognized Liability Assumed, Accounts Payable, Current								(105)
Business Combination, Recognized Liability Assumed, Other Liability, Current								(195)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities								0
Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent								(164)
Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less)								459
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value								0
Goodwill								1,681
Goodwill								1,681
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net								2,140
Business Combination, Acquisition-Related Cost, Expense	37				$ 40
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 210
Discount Rate, fair value inputs	7.50%				7.50%
Specialty Alliance
Business Combination [Line Items]
Business Combination, Voting Equity Interest Acquired, Percentage	76.00%				76.00%
Customer Contracts | GIA [Member]
Business Combination [Line Items]
Finite-Lived Intangible Assets, Net											$ 0
Customer Contracts | Solaris Health
Business Combination [Line Items]
Finite-Lived Intangible Assets, Net								0
Trademarks and Trade Names | ION
Business Combination [Line Items]
Finite-Lived Intangible Assets, Remaining Amortization Period												10 years
Trademarks and Trade Names | GIA [Member]
Business Combination [Line Items]
Finite-Lived Intangible Assets, Net											$ 23
Finite-Lived Intangible Assets, Remaining Amortization Period											10 years
Trademarks and Trade Names | Urology America
Business Combination [Line Items]
Finite-Lived Intangible Assets, Remaining Amortization Period									10 years
Trademarks and Trade Names | Solaris Health
Business Combination [Line Items]
Finite-Lived Intangible Assets, Net								$ 239
Finite-Lived Intangible Assets, Remaining Amortization Period								10 years
Noncompete Agreements
Business Combination [Line Items]
Finite-Lived Intangible Assets, Net	$ 85	51			$ 85		$ 51
Finite-Lived Intangible Assets, Remaining Amortization Period	4 years				4 years
Noncompete Agreements | ION
Business Combination [Line Items]
Finite-Lived Intangible Assets, Net												$ 0
Noncompete Agreements | GIA [Member]
Business Combination [Line Items]
Finite-Lived Intangible Assets, Remaining Amortization Period											5 years
Noncompete Agreements | Urology America
Business Combination [Line Items]
Finite-Lived Intangible Assets, Net									$ 0
Noncompete Agreements | ADS
Business Combination [Line Items]
Finite-Lived Intangible Assets, Net										0
Noncompete Agreements | Solaris Health
Business Combination [Line Items]
Finite-Lived Intangible Assets, Net								$ 39
Finite-Lived Intangible Assets, Remaining Amortization Period								5 years
Customer-Related Intangible Assets
Business Combination [Line Items]
Finite-Lived Intangible Assets, Net	$ 912	1,237			$ 912		1,237
Finite-Lived Intangible Assets, Remaining Amortization Period	10 years				10 years
Customer-Related Intangible Assets | ION
Business Combination [Line Items]
Finite-Lived Intangible Assets, Net												0
Customer-Related Intangible Assets | Urology America
Business Combination [Line Items]
Finite-Lived Intangible Assets, Net									0
Customer-Related Intangible Assets | ADS
Business Combination [Line Items]
Finite-Lived Intangible Assets, Net										472
Customer-Related Intangible Assets | ADS | Minimum
Business Combination [Line Items]
Finite-Lived Intangible Assets, Remaining Amortization Period	10 years				10 years
Trademarks And Patents Member
Business Combination [Line Items]
Finite-Lived Intangible Assets, Net	$ 1,080	$ 881			$ 1,080		$ 881
Finite-Lived Intangible Assets, Remaining Amortization Period	8 years				8 years
Trademarks And Patents Member | ION
Business Combination [Line Items]
Finite-Lived Intangible Assets, Net												$ 73
Trademarks And Patents Member | GIA [Member]
Business Combination [Line Items]
Finite-Lived Intangible Assets, Net											$ 200
Trademarks And Patents Member | Urology America
Business Combination [Line Items]
Finite-Lived Intangible Assets, Net									$ 33
Trademarks And Patents Member | ADS
Business Combination [Line Items]
Finite-Lived Intangible Assets, Net										$ 28
Trademarks And Patents Member | ADS | Minimum
Business Combination [Line Items]
Finite-Lived Intangible Assets, Remaining Amortization Period	2 years				2 years