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Held for Sale (Details) - Businesses Held for Sale $ in Millions	Sep. 30, 2025 USD ($)
Held for Sale [Line Items]
Cash and cash equivalents	$ 248
Accounts receivable and other current assets	682
Property, equipment and capitalized software	743
Goodwill and other intangible assets	460
Other long-term assets	294
Remeasurement of assets of businesses held for sale to fair value less cost to sell	(1,397)
Total assets	1,030
Medical costs payable	195
Accounts payable and other current liabilities	377
Other long-term liabilities	407
Total liabilities	979
Foreign currency translation loss	985
Noncontrolling interests included in determination of remeasurement losses	$ 269

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