| | | | | | | | | | | | | | | | | Year Ended December 31, 2015 (in millions, except per unit data) | Limited Partners' Common Units | | Limited Partners' Subordinated Units | | Incentive Distribution Rights | | Total | Net income attributable to partners | | | | | | | | Distribution | $ | 32.9 |
| | $ | 28.7 |
| | $ | — |
| | $ | 61.6 |
| Net income in excess of distribution(1) | 6.7 |
| | 5.1 |
| | 0.6 |
| | 12.4 |
| Net income attributable to partners | $ | 39.6 |
| | $ | 33.8 |
| | $ | 0.6 |
| | $ | 74.0 |
| | | | | | | | | Weighted-average limited partner units outstanding | | | | | | | | Basic and diluted | 53.8 |
| | 46.8 |
| | | | 100.6 |
| Net income attributable to partners' ownership interest subsequent to IPO per limited partner unit | | | | | | | | Basic and diluted | $ | 0.74 |
| | $ | 0.72 |
| | | | $ | 0.74 |
|
(1) Net income attributable to partners in excess of distribution is for the period subsequent to the IPO. |