| COSTCO WHOLESALE CORP /NEW (COST) |
| Q4-CY2025 | Q3-CY2025 | Q2-CY2025 | Q1-CY2025 | Q4-CY2024 | Q3-CY2024 | Q2-CY2024 | Q1-CY2024 | Q4-CY2023 | Q3-CY2023 | Q2-CY2023 | Q1-CY2023 | Q4-CY2022 | Q3-CY2022 | Q2-CY2022 | Q1-CY2022 | Q4-CY2021 | Q3-CY2021 | Q2-CY2021 | Q1-CY2021 | Q4-CY2020 | Q3-CY2020 | Q2-CY2020 | Q1-CY2020 | Q4-CY2019 | Q3-CY2019 | Q2-CY2019 | Q1-CY2019 | Q4-CY2018 | Q3-CY2018 | Q2-CY2018 | Q1-CY2018 | Q4-CY2017 | Q3-CY2017 | Q2-CY2017 | Q1-CY2017 | Q4-CY2016 | Q3-CY2016 | Q2-CY2016 | Q1-CY2016 | Q4-CY2015 | Q3-CY2015 | Q2-CY2015 | Q1-CY2015 | Q4-CY2014 | Q3-CY2014 | Q2-CY2014 | Q1-CY2014 | Q4-CY2013 |
| Balance Sheet Date | | 2025-Aug-31 | 2025-May-11 | 2025-Feb-16 | 2024-Nov-24 | 2024-Sep-01 | 2024-May-12 | 2024-Feb-18 | 2023-Nov-26 | 2023-Sep-03 | 2023-May-07 | 2023-Feb-12 | 2022-Nov-20 | 2022-Aug-28 | 2022-May-08 | 2022-Feb-13 | 2021-Nov-21 | 2021-Aug-29 | 2021-May-09 | 2021-Feb-14 | 2020-Nov-22 | 2020-Aug-30 | 2020-May-10 | 2020-Feb-16 | 2019-Nov-24 | 2019-Sep-01 | 2019-May-12 | 2019-Feb-17 | 2018-Nov-25 | 2018-Sep-02 | 2018-May-13 | 2018-Feb-18 | 2017-Nov-26 | 2017-Sep-03 | 2017-May-07 | 2017-Feb-12 | 2016-Nov-20 | 2016-Aug-28 | 2016-May-08 | 2016-Feb-14 | 2015-Nov-22 | 2015-Aug-30 | 2015-May-10 | 2015-Feb-15 | 2014-Nov-23 | 2014-Aug-31 | 2014-May-11 | 2014-Feb-16 | 2013-Nov-24 |
| Fiscal Period | | Q4-FY2025 | Q3-FY2025 | Q2-FY2025 | Q1-FY2025 | Q4-FY2024 | Q3-FY2024 | Q2-FY2024 | Q1-FY2024 | Q4-FY2023 | Q3-FY2023 | Q2-FY2023 | Q1-FY2023 | Q4-FY2022 | Q3-FY2022 | Q2-FY2022 | Q1-FY2022 | Q4-FY2021 | Q3-FY2021 | Q2-FY2021 | Q1-FY2021 | Q4-FY2020 | Q3-FY2020 | Q2-FY2020 | Q1-FY2020 | Q4-FY2019 | Q3-FY2019 | Q2-FY2019 | Q1-FY2019 | Q4-FY2018 | Q3-FY2018 | Q2-FY2018 | Q1-FY2018 | Q4-FY2017 | Q3-FY2017 | Q2-FY2017 | Q1-FY2017 | Q4-FY2016 | Q3-FY2016 | Q2-FY2016 | Q1-FY2016 | Q4-FY2015 | Q3-FY2015 | Q2-FY2015 | Q1-FY2015 | Q4-FY2014 | Q3-FY2014 | Q2-FY2014 | Q1-FY2014 |
| Close Price of Common Stock | 893.25$ | 925.58$ | 990.04$ | 947.22$ | 916.62$ | 886.31$ | 849.99$ | 732.30$ | 660.45$ | 565.04$ | 538.41$ | 497.20$ | 456.51$ | 472.73$ | 479.44$ | 575.61$ | 567.81$ | 449.38$ | 395.77$ | 352.68$ | 376.76$ | 355.04$ | 303.42$ | 285.55$ | 293.80$ | 288.18$ | 264.14$ | 242.22$ | 203.34$ | 234.87$ | 209.02$ | 188.33$ | 186.15$ | 164.26$ | | | | | | | | | | | | | | | |
| Market Cap of Common Stock | 395,869,798,962$ | 410,510,098,425$ | 439,101,550,760$ | 420,309,930,600$ | 406,926,116,040$ | 392,966,809,940$ | 376,863,466,260$ | 324,810,932,700$ | 293,099,124,150$ | 250,438,158,880$ | 238,635,157,020$ | 220,533,060,000$ | 202,617,854,910$ | 209,433,099,170$ | 212,405,823,760$ | 255,155,825,190$ | 251,786,259,540$ | 198,689,322,580$ | 174,986,143,570$ | 156,115,212,720$ | 166,885,511,025$ | 156,758,325,920$ | 133,966,908,660$ | 126,105,162,100$ | 129,794,376,400,000$ | 126,744,733,980$ | 116,171,677,540$ | 106,574,135,580$ | 89,580,623,640$ | 103,014,451,740$ | 91,676,590,040$ | 82,654,835,390$ | 81,754,287,750$ | 72,057,412,540$ | | | | | | | | | | | | | | | |
| QoQ% | (3.57%) | (6.51%) | 4.47% | 3.29% | 3.55% | 4.27% | 16.03% | 10.82% | 17.04% | 4.95% | 8.21% | 8.84% | (3.25%) | (1.40%) | (16.75%) | 1.34% | 26.72% | 13.55% | 12.09% | (6.45%) | 6.46% | 17.01% | 6.23% | (99.90%) | 102,306.13% | 9.10% | 9.01% | 18.97% | (13.04%) | 12.37% | 10.92% | 1.10% | 13.46% | | | | | | | | | | | | | | | | |
| YoY% | (2.72%) | 4.46% | 16.52% | 29.40% | 38.84% | 56.91% | 57.93% | 47.28% | 44.66% | 19.58% | 12.35% | (13.57%) | (19.53%) | 5.41% | 21.38% | 63.44% | 50.87% | 26.75% | 30.62% | 23.80% | (99.87%) | 23.68% | 15.32% | 18.33% | 144,791.13% | 23.04% | 26.72% | 28.94% | 9.57% | 42.96% | | | | | | | | | | | | | | | | | | | |
| Close Price of Warrant | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Close Price of Unit | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Close Price of Right | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Common Shares Outstanding | 443,179,176 | 443,237,000 | 443,519,000 | 443,730,000 | 443,942,000 | 443,126,000 | 443,374,000 | 443,549,000 | 443,787,000 | 442,793,000 | 443,222,000 | 443,550,000 | 443,841,000 | 442,664,000 | 443,029,000 | 443,279,000 | 443,434,000 | 441,825,000 | 442,141,000 | 442,654,000 | 442,955,000 | 441,255,000 | 441,523,000 | 441,622,000 | 441,778,000 | 439,625,000 | 439,811,000 | 439,989,000 | 440,546,000 | 438,189,000 | 438,602,000 | 438,883,000 | 439,185,000 | 437,204,000 | 438,679,000 | 438,941,000 | 439,343,000 | 437,524,000 | 438,368,000 | 439,256,000 | 439,777,000 | 437,952,000 | 439,749,000 | 440,178,000 | 440,499,000 | 437,683,000 | 438,582,000 | 439,888,000 | 439,722,000 |
| QoQ% | (.01%) | (.06%) | (.05%) | (.05%) | .18% | (.06%) | (.04%) | (.05%) | .22% | (.10%) | (.07%) | (.07%) | .27% | (.08%) | (.06%) | (.04%) | .36% | (.07%) | (.12%) | (.07%) | .39% | (.06%) | (.02%) | (.04%) | .49% | (.04%) | (.04%) | (.13%) | .54% | (.09%) | (.06%) | (.07%) | .45% | (.34%) | (.06%) | (.09%) | .42% | (.19%) | (.20%) | (.12%) | .42% | (.41%) | (.10%) | (.07%) | .64% | (.21%) | (.30%) | .04% | .66% |
| YoY% | (.17%) | .03% | .03% | .04% | .04% | .08% | .03% | .00% | (.01%) | .03% | .04% | .06% | .09% | .19% | .20% | .14% | .11% | .13% | .14% | .23% | .27% | .37% | .39% | .37% | .28% | .33% | .28% | .25% | .31% | .23% | (.02%) | (.01%) | (.04%) | (.07%) | .07% | (.07%) | (.10%) | (.10%) | (.31%) | (.21%) | (.16%) | .06% | .27% | .07% | .18% | .19% | .44% | .81% | 1.13% |