| In millions, except per share items | Dec-31-21 | Dec-31-20 | Dec-31-19 | Dec-31-18 |
| | 10-K/A | 10-K/A | 10-K/A | 10-K |
| Gross revenue | 1,367.5 | 766.9 | 731.4 | 560.6 |
| Gross revenue growth | 78.3% | 4.9% | 30.5% | |
| General and administrative expenses | 219.5 | 180.0 | 117.1 | 79.8 |
| Depreciation and amortization expense (Note 5) | 62.2 | 51.9 | 40.2 | 40.4 |
| Professional fees | -16.8 | -10.7 | -10.4 | 7.4 |
| Advertising and marketing expenses | 28.9 | 4.0 | 6.3 | 6.1 |
| Income from operations | -49.2 | -57.6 | -4.4 | -13.1 |
| Operating margin | -3.6% | -7.5% | -0.6% | -2.3% |
| Other (expense) income, net | 0.3 | 0.6 | 1.0 | 0.6 |
| |
| Unrealized gain on investments in securities (Note 13) | | | | |
| Change in TRA liability (Note 14) | | | | |
| Income (loss) before income taxes | -77.1 | -113.8 | -54.9 | -59.5 |
| Income tax benefit (provision) (Note 14) | 3.1 | 2.4 | -1.7 | 4.1 |
| Net income | -74.0 | -111.4 | -56.6 | -55.4 |
| Net income (loss) attributable to noncontrolling interests | -25.8 | -93.0 | | |
| Net income attributable to Shift4 Payments, Inc. | -48.2 | -18.4 | | |
| |
| 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) | | | | |