| In millions, except per share items | Feb-28-18 | Nov-30-17 | Aug-31-17 | May-31-17 | Feb-28-17 | Nov-30-16 | Aug-31-16 | May-31-16 |
| | 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
| Revenues: | | | | | | | | |
| Operating revenues | 10.9 | 15.8 | 27.7 | | 9.9 | 14.5 | 26.1 | |
| Total revenues | 10.9 | 15.8 | 27.7 | 16.7 | 9.9 | 14.5 | 26.1 | 13.5 |
| Total revenues growth | 9.8% | 9.0% | 6.2% | 23.4% | 39.4% | | 749.0% | |
| Operating costs and expenses: | | | | | | | | |
| Cost of operations | 2.4 | 2.1 | 2.1 | 2.1 | 2.2 | 2.0 | 1.9 | 1.8 |
| Selling, general and administrative | 4.3 | 3.8 | 2.1 | 1.9 | 1.9 | 1.9 | 1.8 | 1.7 |
| Depreciation and accretion | 7.1 | 7.2 | 7.2 | 6.9 | 6.8 | 6.5 | 6.3 | 5.4 |
| Acquisition-related transaction costs | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.6 | 0.8 |
| Total operating costs and expenses | 13.8 | 13.1 | 11.4 | 11.0 | 10.9 | 10.4 | 10.6 | 9.6 |
| Operating loss | -2.9 | 2.7 | 16.4 | 5.7 | -1.0 | 4.1 | 15.5 | 3.9 |
| Operating margin | -27.0% | 17.0% | 59.1% | 34.3% | -10.1% | 28.2% | 59.3% | 28.7% |
| |
| Other expense (income): | | | | | | | | |
| Interest expense | -6.2 | -6.1 | -6.1 | -5.9 | -5.5 | -3.0 | -3.2 | -3.1 |
| Interest income | -0.3 | -0.3 | -0.3 | -0.3 | -0.3 | -0.3 | -0.3 | -0.3 |
| Other income | -0.4 | -0.5 | 0.3 | 0.0 | -0.8 | -1.0 | -0.3 | -0.3 |
| Total other expense, net | 5.5 | 5.3 | 6.0 | -5.6 | 4.4 | 1.7 | 2.6 | -2.4 |
| Loss before income taxes and equity in earnings of unconsolidated investees | -8.4 | -2.6 | 10.4 | 0.1 | -5.4 | 2.4 | 12.9 | 1.5 |
| Income tax benefit (provision) | 13.2 | 1.3 | -5.0 | 2.3 | -0.5 | -3.0 | -5.1 | 6.7 |
| Tax rate | 156.3% | 48.9% | 48.4% | | | 124.7% | 39.4% | |
| Equity in earnings of unconsolidated investees | 2.0 | 10.1 | 23.3 | 9.4 | 0.6 | 4.8 | 8.1 | 5.0 |
| Net income (loss) | 6.7 | 8.8 | 28.7 | 7.1 | -5.3 | 4.3 | 15.9 | -0.2 |
| Less: Net loss attributable to noncontrolling interests and redeemable noncontrolling interests | -3.2 | 9.1 | 21.2 | 3.8 | -6.2 | 0.1 | 8.3 | -10.2 |
| Net income attributable to 8point3 Energy Partners LP Class A shares | 9.9 | -0.3 | 7.5 | | 0.9 | 4.2 | 7.6 | |
| |
| Net income per Class A share: | | | | | | | | |
| Basic (in dollars per share) | $0.35 | ($0.01) | $0.27 | $0.12 | $0.03 | $0.12 | $0.38 | $0.50 |
| Diluted (in dollars per share) | $0.35 | ($0.01) | $0.27 | $0.12 | $0.03 | $0.12 | $0.38 | $0.50 |
| Distributions per Class A share (in dollars per share) | 0.0 | | | | 0.0 | | | |
| |
| Weighted average number of Class A shares: | | | | | | | | |
| Basic (in shares) | 28.1 | 28.1 | 28.1 | 28.1 | 28.1 | 21.4 | 20.0 | 20.0 |
| Diluted (in shares) | 43.6 | 43.6 | 43.6 | 43.6 | 43.6 | 36.9 | 35.5 | 35.5 |