| In millions, except per share items | Jun-30-23 | Mar-31-23 | Sep-30-22 | Jun-30-22 | Mar-31-22 | Dec-31-21 | Sep-30-21 | Jun-30-21 |
| | 10-Q | 10-Q | 10-Q | 10-Q | 10-Q | 10-K/A | 10-Q | 10-Q/A |
| Gross revenue | 637.0 | 547.0 | 547.3 | 506.7 | 401.9 | 399.4 | 377.8 | 351.0 |
| Gross revenue growth | 25.7% | 36.1% | 44.9% | 44.4% | 67.9% | 89.4% | 75.9% | 147.5% |
| Cost of sales | -470.1 | -401.6 | | -400.9 | -317.3 | | | |
| General and administrative expenses | 82.1 | 85.7 | 74.1 | 58.4 | 66.2 | 66.2 | 48.1 | 51.7 |
| Revaluation of contingent liabilities (Note 13) | -5.6 | -7.0 | 36.9 | 0.3 | | | | |
| Depreciation and amortization expense (Note 5) | 35.9 | 35.3 | 28.9 | 16.7 | 17.3 | 16.3 | 15.0 | 15.5 |
| Professional fees | -5.4 | -6.1 | -10.4 | -5.2 | -10.1 | -29.8 | -3.3 | -3.5 |
| Advertising and marketing expenses | 4.0 | 2.5 | 5.6 | 2.9 | 2.7 | 2.8 | 3.5 | 2.5 |
| Income from operations | 33.9 | 8.8 | 53.5 | 22.9 | -11.7 | -5.0 | -5.6 | 4.9 |
| Operating margin | 5.3% | 1.6% | 9.8% | 4.5% | -2.9% | -1.3% | -1.5% | 1.4% |
| Interest income | 8.8 | 7.6 | 3.5 | 1.4 | | | | |
| Other (expense) income, net | -0.4 | 0.1 | | 0.1 | 0.2 | 0.1 | 0.2 | |
| |
| Unrealized gain on investments in securities (Note 13) | | | | | | | | |
| Change in TRA liability (Note 14) | | | | | | | | |
| Interest expense | -8.0 | -8.1 | | -8.4 | -7.9 | | | |
| Income (loss) before income taxes | 33.5 | 16.8 | 47.6 | 16.0 | -19.4 | -12.7 | -12.8 | -1.4 |
| Income tax benefit (provision) (Note 14) | 3.3 | 3.6 | -1.2 | -1.0 | 6.2 | -1.0 | -1.0 | 5.9 |
| Net income | 36.8 | 20.4 | 46.4 | 15.0 | -13.2 | -13.7 | -13.8 | 4.5 |
| Net income (loss) attributable to noncontrolling interests | 11.7 | 5.6 | 3.3 | 4.7 | -5.7 | -4.3 | -4.6 | 1.3 |
| Net income attributable to Shift4 Payments, Inc. | 25.1 | 14.8 | 43.1 | 10.3 | -7.5 | -9.4 | -9.2 | 3.2 |
| |
| Basic net income per share (Note 21) | | | | | | | | |
| Net income per share - basic (in dollars per share) | | | | | | | | |
| Weighted average common stock outstanding - basic (in shares) | | | | | | | | |
| Diluted net income per share (Note 21) | | | | | | | | |
| Net income per share - diluted (in dollars per share) | | | | | | | | |
| Weighted average common stock outstanding - diluted (in shares) | | | | | | | | |