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Business Combinations and Asset Acquisitions (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2024 | Dec. 31, 2024 | Jun. 30, 2024 | Jan. 30, 2025 | Dec. 02, 2024
Business Acquisition [Line Items] |  |  |  |  |
Net Intangible | $ 1,936 | $ 1,936 | $ 1,713 |  |
Goodwill | $ 5,488 | $ 5,488 | 4,725 |  |
Weighted- Average Remaining Amortization Period (Years) | 11 years | 11 years |  |  |
Business Combination, Acquisition Related Costs | $ 36 | $ 42 |  |  |
ION |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Payments to Acquire Businesses, Gross | $ 1,100 |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles |  |  |  |  | $ 357
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents |  |  |  |  | 8
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities |  |  |  |  | (3)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables |  |  |  |  | 60
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory |  |  |  |  | 4
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets |  |  |  |  | 5
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment |  |  |  |  | 31
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets |  |  |  |  | 45
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable |  |  |  |  | (9)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other |  |  |  |  | (38)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities |  |  |  |  | (14)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other |  |  |  |  | (62)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net |  |  |  |  | 384
Business Combination, Acquisition of Less than 100 Percent, Noncontrolling Interest, Fair Value |  |  |  |  | (72)
Goodwill |  |  |  |  | 772
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net |  |  |  |  | 1,084
ION | Measurement Input, Discount Rate | Valuation Technique, Discounted Cash Flow |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Intangible Assets Measurement Input | 9.50% |  |  |  |
Specialty Networks |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Payments to Acquire Businesses, Gross |  |  | $ 1,200 |  |
ADSG [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Business Combination, Price of Acquisition, Expected | $ 1,100 |  |  |  |
GIA [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Business Combination, Price of Acquisition, Expected | 2,800 |  |  |  |
GIA [Member] | Subsequent Event |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  | 73.00% |
Customer Contracts |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Net Intangible | $ 277 | $ 277 |  |  |
Weighted- Average Remaining Amortization Period (Years) | 20 years | 20 years |  |  |
Customer Contracts | ION |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Net Intangible |  |  |  |  | $ 279
Weighted- Average Remaining Amortization Period (Years) |  |  |  |  | 20 years
Trademarks and Trade Names | ION |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Net Intangible |  |  |  |  | $ 78
Weighted- Average Remaining Amortization Period (Years) |  |  |  |  | 10 years

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