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Held for Sale (Details) - Businesses Held for Sale $ in Millions	Mar. 31, 2025 USD ($)
Held for Sale [Line Items]
Cash and cash equivalents	$ 310
Accounts receivable and other current assets	637
Property, equipment and capitalized software	690
Goodwill and other intangible assets	440
Other long-term assets	287
Remeasurement of assets of businesses held for sale to fair value less cost to sell	(1,272)
Total assets	1,092
Medical costs payable	182
Accounts payable and other current liabilities	459
Other long-term liabilities	411
Total liabilities	1,052
Foreign currency translation loss	849
Noncontrolling interests included in determination of remeasurement losses	$ 50

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