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Risk Management and Derivatives - Effects Of Cash Flow Hedges in Statement of Income (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
May 31, 2021 | May 31, 2020 | May 31, 2019
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Revenues | $ 44,538 | $ 37,403 | $ 39,117
Cost of sales | 24,576 | 21,162 | 21,643
Demand creation expense | 3,114 | 3,592 | 3,753
Other (income) expense, net | 14 | 139 | (78)
Interest expense (income), net | 262 | 89 | 49
Cash Flow Hedging |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
AMOUNT OF GAIN (LOSS) ON CASH FLOW HEDGE ACTIVITY | 45 | 519 | 76
Foreign exchange forwards and options | Revenue | Cash Flow Hedging |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
AMOUNT OF GAIN (LOSS) ON CASH FLOW HEDGE ACTIVITY | 45 | (17) | (5)
Foreign exchange forwards and options | Cost of sales | Cash Flow Hedging |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
AMOUNT OF GAIN (LOSS) ON CASH FLOW HEDGE ACTIVITY | 51 | 364 | 53
Foreign exchange forwards and options | Demand creation expense | Cash Flow Hedging |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
AMOUNT OF GAIN (LOSS) ON CASH FLOW HEDGE ACTIVITY | 3 | (2) | 0
Foreign exchange forwards and options | Other (income) expense, net | Cash Flow Hedging |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
AMOUNT OF GAIN (LOSS) ON CASH FLOW HEDGE ACTIVITY | (47) | 181 | 35
Interest rate swaps | Interest (income) expense, net | Cash Flow Hedging |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
AMOUNT OF GAIN (LOSS) ON CASH FLOW HEDGE ACTIVITY | $ (7) | $ (7) | $ (7)

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