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UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions | 6 Months Ended
--- | ---
Nov. 30, 2023 | Nov. 30, 2022
Cash provided (used) by operations: |  |
Net income | $ 3,028 | $ 2,799
Adjustments to reconcile net income to net cash provided (used) by operations: |  |
Depreciation | 382 | 342
Deferred income taxes | (144) | (150)
Stock-based compensation | 402 | 364
Amortization, impairment and other | (12) | 137
Net foreign currency adjustments | (43) | (125)
Changes in certain working capital components and other assets and liabilities: |  |
(Increase) decrease in accounts receivable | (649) | (878)
(Increase) decrease in inventories | 493 | (948)
(Increase) decrease in prepaid expenses, operating lease right-of-use assets and other current and non-current assets | (394) | (239)
Increase (decrease) in accounts payable, accrued liabilities, operating lease liabilities and other current and non-current liabilities | (312) | 56
Cash provided (used) by operations | 2,751 | 1,358
Cash provided (used) by investing activities: |  |
Purchases of short-term investments | (2,206) | (3,500)
Maturities of short-term investments | 1,477 | 1,951
Sales of short-term investments | 2,072 | 1,972
Additions to property, plant and equipment | (458) | (500)
Other investing activities | (10) | 54
Cash provided (used) by investing activities | 875 | (23)
Cash provided (used) by financing activities: |  |
Increase (decrease) in notes payable, net | 0 | (3)
Proceeds from exercise of stock options and other stock issuances | 327 | 260
Repurchase of common stock | (2,331) | (2,550)
Dividends — common and preferred | (1,047) | (960)
Other financing activities | (100) | (68)
Cash provided (used) by financing activities | (3,151) | (3,321)
Effect of exchange rate changes on cash and equivalents | 3 | (98)
Net increase (decrease) in cash and equivalents | 478 | (2,084)
Cash and equivalents, beginning of period | 7,441 | 8,574
CASH AND EQUIVALENTS, END OF PERIOD | 7,919 | 6,490
Supplemental disclosure of cash flow information: |  |
Non-cash additions to property, plant and equipment | 165 | 124
Dividends declared and not paid | $ 565 | $ 526

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