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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Statement of Cash Flows [Abstract]    
Net income $ 1,951 $ 1,144
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 444 414
Deferred income tax expense 97 11
Stock-based compensation expense 69 41
Impairment and restructuring charges, and acquisition-related costs 55 43
Litigation and investigation costs 30 45
Net losses (gains) on sales, consolidation and deconsolidation of facilities (34) 16
Equity in earnings of unconsolidated affiliates, net of distributions received (11) (8)
Amortization of debt discount and debt issuance costs 11 12
Other items, net (10) (1)
Changes in cash from operating assets and liabilities:    
Accounts receivable (33) 40
Inventories and other current assets 249 9
Income taxes 94 10
Accounts payable, accrued expenses and other current liabilities (638) 24
Other long-term liabilities 36 32
Payments for restructuring charges, acquisition-related costs, and litigation costs and settlements (84) (81)
Net cash provided by operating activities 2,226 1,751
Cash flows from investing activities:    
Purchases of property and equipment (348) (366)
Purchases of businesses or joint venture interests, net of cash acquired (130) (147)
Proceeds from sales of facilities and other assets 6 14
Proceeds from sales of marketable securities and long-term investments 51 37
Purchases of marketable securities and long-term investments (77) (38)
Other items, net (22) (1)
Net cash used in investing activities (520) (501)
Cash flows from financing activities:    
Repayments of borrowings (59) (62)
Proceeds from borrowings 28 15
Repurchases of common stock (1,360) (1,095)
Distributions paid to noncontrolling interests (398) (374)
Proceeds from the sale of noncontrolling interests 15 18
Purchases of noncontrolling interests (558) (79)
Repayments of advances from managed care payers 0 (12)
Taxes paid related to net share settlement, net of proceeds from shares issued under stock-based compensation plans (83) (33)
Other items, net (4) (22)
Net cash used in financing activities (2,419) (1,644)
Net decrease in cash and cash equivalents (713) (394)
Cash and cash equivalents at beginning of period 2,883 3,019
Cash and cash equivalents at end of period 2,170 2,625
Supplemental disclosures:    
Interest paid, net of capitalized interest (365) (399)
Income tax payments, net $ (330) $ (242)