| Schedule of long-term debt |
Our long-term debt (net of unamortized discounts and issuance costs) consisted of: | | | | | | | | | | | | | April 30, | 2020 | | 2021 | 2.25% senior notes, $250 principal amount, due January 15, 2023 | $ | 249 | | | $ | 249 | | 3.50% senior notes, $300 principal amount, due April 15, 2025 | 297 | | | 298 | | 1.20% senior notes, €300 principal amount, due July 7, 2026 | 324 | | | 362 | | 2.60% senior notes, £300 principal amount, due July 7, 2028 | 369 | | | 415 | | 4.00% senior notes, $300 principal amount, due April 15, 2038 | 294 | | | 294 | | 3.75% senior notes, $250 principal amount, due January 15, 2043 | 248 | | | 248 | | 4.50% senior notes, $500 principal amount, due July 15, 2045 | 488 | | | 488 | | |
| $ | 2,269 | | | $ | 2,354 | | |
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