| USD ($) $ in Millions, shares in Millions | Jun 30, 2026 | Mar 31, 2026 | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Sep 30, 2024 | Jun 30, 2024 | Mar 31, 2024 | Sep 30, 2023 | Jun 30, 2023 | Mar 31, 2023 | Sep 30, 2022 | Jun 30, 2022 | Mar 31, 2022 | Sep 30, 2021 | Jun 30, 2021 | Mar 31, 2021 | Sep 30, 2020 | Jun 30, 2020 | Mar 31, 2020 | Sep 30, 2019 | Jun 30, 2019 | Mar 31, 2019 | Sep 30, 2018 | Jun 30, 2018 | Mar 31, 2018 | Sep 30, 2017 | Jun 30, 2017 | Mar 31, 2017 | Sep 30, 2016 | Jun 30, 2016 | Mar 31, 2016 | Sep 30, 2015 | Jun 30, 2015 | Mar 31, 2015 | Sep 30, 2014 | Jun 30, 2014 | Mar 31, 2014 | Sep 30, 2013 | Jun 30, 2013 | Mar 31, 2013 | Sep 30, 2012 | Jun 30, 2012 | Mar 31, 2012 | Sep 30, 2011 | Jun 30, 2011 | Mar 31, 2011 | Sep 30, 2010 | Jun 30, 2010 | Mar 31, 2010 | Sep 30, 2009 | Jun 30, 2009 |
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Revenues | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Sales by Company-operated restaurants | - | $ 2,317.0 | - | - | $ 2,132.0 | - | - | $ 2,355.0 | $ 2,556.2 | $ 2,487.0 | $ 2,224.3 | $ 2,124.8 | ||||||||||||||||||||||||||||||||||||||||
Revenues from franchised restaurants | 4,393.0 | 4,007.0 | 4,363.0 | 4,213.0 | 3,661.0 | 4,094.0 | 3,940.0 | 3,723.0 | 4,047.1 | 3,933.3 | 3,587.5 | 3,671.2 | ||||||||||||||||||||||||||||||||||||||||
Sales by Company-owned and operated restaurants | 2,525.0 | - | 2,563.0 | 2,458.0 | - | 2,656.0 | 2,461.0 | - | - | - | - | - | ||||||||||||||||||||||||||||||||||||||||
Other Revenues | 182.0 | 193.0 | 151.0 | 172.0 | 162.0 | 124.0 | 89.0 | 91.0 | 88.9 | 77.2 | 86.0 | 76.1 | ||||||||||||||||||||||||||||||||||||||||
Total revenues | 7,099.0 | 6,517.0 | 7,078.0 | 6,843.0 | 5,956.0 | 6,873.0 | 6,490.0 | 6,169.0 | 6,692.2 | 6,497.5 | 5,897.8 | 5,872.1 | ||||||||||||||||||||||||||||||||||||||||
Operating costs and expenses | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Company-operated restaurant expenses | 2,138.0 | 2,032.0 | 2,172.0 | 2,078.0 | 1,859.0 | 2,248.0 | 2,074.0 | 2,035.0 | 2,135.0 | 2,091.3 | 1,923.1 | 1,779.6 | ||||||||||||||||||||||||||||||||||||||||
Franchised restaurants-occupancy expenses | 680.0 | 676.0 | 666.0 | 654.0 | 620.0 | 646.0 | 629.0 | 627.0 | 625.4 | 618.2 | 598.3 | 589.0 | ||||||||||||||||||||||||||||||||||||||||
Other Restaurant Expenses | 163.0 | 166.0 | 135.0 | 149.0 | 140.0 | 104.0 | 69.0 | 68.0 | 68.1 | 57.0 | 62.8 | 57.4 | ||||||||||||||||||||||||||||||||||||||||
Selling, general & administrative expenses | ||||||||||||||||||||||||||||||||||||||||||||||||||||
Depreciation and Amortization | 111.0 | 111.0 | 121.0 | 106.0 | 107.0 | 111.0 | 101.0 | 99.0 | 96.7 | 95.2 | 99.3 | 93.3 | ||||||||||||||||||||||||||||||||||||||||
Other Selling, General and Administrative Expense | 706.0 | 648.0 | 664.0 | 595.0 | 575.0 | 536.0 | 590.0 | 622.0 | 583.5 | 567.5 | 553.3 | 576.4 | ||||||||||||||||||||||||||||||||||||||||
Selling, general & administrative expenses | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||||||||||||
Impairment and other charges (credits), net | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||||||||||||
Other operating (income) expense, net | (37.0) | (69.0) | (37.0) | 29.0 | 7.0 | 39.0 | (107.0) | (17.0) | (24.8) | (35.8) | 128.6 | 12.5 | ||||||||||||||||||||||||||||||||||||||||
Total operating costs and expenses | 3,760.0 | 3,564.0 | 3,721.0 | 3,611.0 | 3,308.0 | 3,685.0 | 3,570.0 | 3,433.0 | 3,483.9 | 3,393.4 | 3,365.4 | 3,108.2 | ||||||||||||||||||||||||||||||||||||||||
Operating income | 3,338.0 | 2,953.0 | 3,357.0 | 3,232.0 | 2,648.0 | 3,188.0 | 2,920.0 | 2,736.0 | 3,208.3 | 3,104.1 | 2,532.4 | 2,763.9 | ||||||||||||||||||||||||||||||||||||||||
Interest expense | 409.0 | 400.0 | 406.0 | 390.0 | 376.0 | 381.0 | 373.0 | 372.0 | 340.7 | 330.2 | 329.7 | 306.2 | ||||||||||||||||||||||||||||||||||||||||
Nonoperating (income) expense, net | (6.0) | 11.0 | 1.0 | (18.0) | (57.0) | (36.0) | 9.0 | (45.0) | (55.9) | (42.8) | (64.3) | (78.5) | ||||||||||||||||||||||||||||||||||||||||
Gain on sale of investment | - | - | - | - | - | - | - | - | - | - | - | - | ||||||||||||||||||||||||||||||||||||||||
Income before provision for income taxes | 2,936.0 | 2,542.0 | 2,949.0 | 2,861.0 | 2,330.0 | 2,843.0 | 2,555.0 | 2,409.0 | 2,923.5 | 2,816.7 | 2,267.0 | 2,536.2 | ||||||||||||||||||||||||||||||||||||||||
Provision for income taxes | 574.0 | 559.0 | 671.0 | 608.0 | 461.0 | 588.0 | 533.0 | 479.0 | 606.4 | 506.3 | 464.7 | 554.6 | ||||||||||||||||||||||||||||||||||||||||
Net income | 2,362.0 | 1,983.0 | 2,278.0 | 2,253.0 | 1,868.0 | 2,255.0 | 2,022.0 | 1,929.0 | 2,317.1 | 2,310.4 | 1,802.3 | 1,981.6 | ||||||||||||||||||||||||||||||||||||||||
Earnings per common share-basic | $ 3.33 | $ 2.79 | $ 3.20 | $ 3.15 | $ 2.61 | $ 3.15 | $ 2.81 | $ 2.67 | $ 3.19 | $ 3.17 | $ 2.47 | $ 2.70 | ||||||||||||||||||||||||||||||||||||||||
Earnings per common share-diluted | 3.32 | 2.78 | 3.18 | 3.14 | 2.60 | 3.13 | 2.80 | 2.66 | 3.17 | 3.15 | 2.45 | 2.68 | ||||||||||||||||||||||||||||||||||||||||
Dividends declared per common share | $ 1.86 | $ 1.86 | $ 1.77 | $ 1.77 | $ 1.77 | $ 3.44 | $ 1.67 | $ 1.67 | $ 1.52 | $ 1.52 | $ 1.52 | $ 1.38 | ||||||||||||||||||||||||||||||||||||||||
Weighted average shares outstanding-basic | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 727.2 | 729.6 | 730.9 | 734.9 | ||||||||||||||||||||||||||||||||||||||||
Weighted average shares outstanding-diluted | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 731.6 | 734.3 | 735.5 | 739.5 | ||||||||||||||||||||||||||||||||||||||||
Comprehensive income | - | - | - | - | - | - | - | - | - | - | - | - |