| CME GROUP INC. |
| 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-Jun-30 | 2025-Mar-31 | 2024-Dec-31 | 2024-Sep-30 | 2024-Jun-30 | 2024-Mar-31 | 2023-Dec-31 | 2023-Sep-30 | 2023-Jun-30 | 2023-Mar-31 | 2022-Dec-31 | 2022-Sep-30 | 2022-Jun-30 | 2022-Mar-31 | 2021-Dec-31 | 2021-Sep-30 | 2021-Jun-30 | 2021-Mar-31 | 2020-Dec-31 | 2020-Sep-30 | 2020-Jun-30 | 2020-Mar-31 | 2019-Dec-31 | 2019-Sep-30 | 2019-Jun-30 | 2019-Mar-31 | 2018-Dec-31 | 2018-Sep-30 | 2018-Jun-30 | 2018-Mar-31 | 2017-Dec-31 | 2017-Sep-30 | 2017-Jun-30 | 2017-Mar-31 | 2016-Dec-31 | 2016-Sep-30 | 2016-Jun-30 | 2016-Mar-31 | 2015-Dec-31 | 2015-Sep-30 | 2015-Jun-30 | 2015-Mar-31 | 2014-Dec-31 | 2014-Sep-30 | 2014-Jun-30 | 2014-Mar-31 | 2013-Dec-31 |
| Fiscal Period | | | 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 | Q4-FY2013 |
| Operating Cash Flow | | | 1,058,500,000$ | 1,116,600,000$ | 1,017,900,000$ | 1,003,000,000$ | 776,900,000$ | 892,700,000$ | 1,044,300,000$ | 856,700,000$ | 650,400,000$ | 902,400,000$ | 981,500,000$ | 657,800,000$ | 617,600,000$ | 799,100,000$ | 668,300,000$ | 631,600,000$ | 499,800,000$ | 602,700,000$ | 660,300,000$ | 311,400,000$ | 986,800,000$ | 757,100,000$ | 719,700,000$ | 810,200,000$ | 473,700,000$ | 669,200,000$ | 510,400,000$ | 582,600,000$ | 522,800,000$ | 825,000,000$ | 460,400,000$ | 507,300,000$ | 264,000,000$ | 519,400,000$ | 499,600,000$ | 478,700,000$ | 223,700,000$ | 530,000,000$ | 391,300,000$ | 463,500,000$ | 258,800,000$ | 418,900,000$ | 502,500,000$ | 234,200,000$ | 171,700,000$ | 383,000,000$ | 381,900,000$ |
| Investing Cash Flow | | | (18,000,000$) | (16,000,000$) | (25,300,000$) | (29,500,000$) | (5,000,000$) | (22,800,000$) | (20,400,000$) | (19,500,000$) | 78,000,000$ | (17,200,000$) | (25,700,000$) | (23,600,000$) | (417,600,000$) | (22,900,000$) | 67,600,000$ | 58,800,000$ | (34,000,000$) | (34,000,000$) | (52,100,000$) | (43,900,000$) | (36,500,000$) | (43,000,000$) | (15,900,000$) | (46,800,000$) | (41,300,000$) | (48,600,000$) | (1,850,700,000$) | (31,200,000$) | 9,700,000$ | (17,400,000$) | (20,900,000$) | (4,000,000$) | (19,400,000$) | 224,200,000$ | 117,500,000$ | (16,500,000$) | (20,000,000$) | (27,300,000$) | 39,200,000$ | (20,200,000$) | 23,300,000$ | (24,400,000$) | (91,500,000$) | (37,300,000$) | (40,900,000$) | (29,400,000$) | 157,500,000$ |
| Financing Cash Flow | | | 20,999,200,000$ | 19,211,400,000$ | (984,100,000$) | 13,347,000,000$ | (9,222,800,000$) | 1,936,400,000$ | 2,588,500,000$ | (26,466,800,000$) | (15,262,500,000$) | (9,198,500,000$) | (5,091,200,000$) | 1,160,600,000$ | (29,672,700,000$) | 8,221,600,000$ | 9,395,300,000$ | 7,549,700,000$ | 17,564,700,000$ | 35,399,000,000$ | 49,397,800,000$ | (340,700,000$) | (396,600,000$) | (1,413,900,000$) | (363,300,000$) | (490,200,000$) | (489,600,000$) | (997,700,000$) | (312,200,000$) | (257,500,000$) | 925,000,000$ | (1,435,300,000$) | (216,800,000$) | (234,400,000$) | (210,400,000$) | (1,323,700,000$) | (179,800,000$) | (202,800,000$) | (188,600,000$) | (1,049,300,000$) | (172,200,000$) | (160,000,000$) | (825,900,000$) | (65,800,000$) | (132,800,000$) | (146,300,000$) | (147,200,000$) | (1,769,600,000$) | (134,700,000$) |
| End Cash Position | | | 1,981,300,000$ | 1,405,300,000$ | 2,892,400,000$ | 2,322,100,000$ | 1,789,900,000$ | 1,436,900,000$ | 2,912,000,000$ | 2,300,200,000$ | 1,880,100,000$ | 1,565,200,000$ | 2,720,100,000$ | 2,130,100,000$ | 1,879,500,000$ | 2,045,700,000$ | 2,834,900,000$ | 1,459,400,000$ | 1,081,000,000$ | 936,400,000$ | 1,633,200,000$ | 1,332,100,000$ | 1,405,400,000$ | 851,700,000$ | 1,551,400,000$ | 1,210,100,000$ | 937,700,000$ | 997,400,000$ | 1,374,500,000$ | 1,406,300,000$ | 1,098,900,000$ | 784,600,000$ | 1,903,600,000$ | 1,631,100,000$ | 1,362,300,000$ | 1,287,800,000$ | 1,868,600,000$ | 1,420,500,000$ | 1,161,100,000$ | 1,146,000,000$ | 1,692,600,000$ | 1,434,300,000$ | 1,151,000,000$ | 1,694,800,000$ | 1,366,100,000$ | 1,087,900,000$ | 1,037,300,000$ | 1,053,700,000$ | 2,469,700,000$ |
| Exchange Rate Effect | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
| Dividends Paid | | | 455,300,000$ | 2,567,400,000$ | 418,800,000$ | 418,500,000$ | 418,500,000$ | 2,328,400,000$ | 400,100,000$ | 400,000,000$ | 399,800,000$ | 2,035,600,000$ | 363,500,000$ | 363,200,000$ | 363,300,000$ | 1,543,500,000$ | 326,800,000$ | 322,500,000$ | 322,500,000$ | 1,217,500,000$ | 304,300,000$ | 304,100,000$ | 304,000,000$ | 1,197,600,000$ | 268,100,000$ | 267,900,000$ | 267,800,000$ | 892,100,000$ | 249,800,000$ | 237,600,000$ | 237,700,000$ | 1,424,800,000$ | 223,900,000$ | 223,500,000$ | 223,500,000$ | 1,322,600,000$ | 202,900,000$ | 202,600,000$ | 202,400,000$ | 1,179,300,000$ | 168,500,000$ | 168,200,000$ | 167,900,000$ | 838,800,000$ | 157,600,000$ | 157,100,000$ | 157,100,000$ | 1,025,000,000$ | 149,500,000$ |