Segment Information We evaluate performance based on net sales and segment income (loss) and use a variety of ratios to measure performance of our reporting segments. These results are not necessarily indicative of the results of operations that would have occurred had each segment been an independent, stand-alone entity during the periods presented. Segment income (loss) represents equity income of unconsolidated subsidiaries and operating income exclusive of intangible amortization, certain acquisition related expenses, costs of restructuring activities, impairments and other unusual non-operating items. Financial information by reportable segment is as follows: | | | | | | | | | | | | | | | | Three months ended | | Nine months ended | In millions | September 30,
2019 | September 30,
2018 | | September 30,
2019 | September 30,
2018 | Net sales | | | | | | Aquatic Systems | $ | 218.7 |
| $ | 232.7 |
| | $ | 709.8 |
| $ | 749.3 |
| Filtration Solutions | 273.5 |
| 240.4 |
| | 798.4 |
| 754.1 |
| Flow Technologies | 221.0 |
| 238.0 |
| | 692.7 |
| 720.2 |
| Other | 0.4 |
| 0.3 |
| | 1.1 |
| 1.0 |
| Consolidated | $ | 713.6 |
| $ | 711.4 |
| | $ | 2,202.0 |
| $ | 2,224.6 |
| Segment income (loss) | | | | | | Aquatic Systems | $ | 54.8 |
| $ | 59.9 |
| | $ | 184.0 |
| $ | 199.5 |
| Filtration Solutions | 45.1 |
| 38.4 |
| | 128.8 |
| 124.4 |
| Flow Technologies | 37.9 |
| 36.6 |
| | 109.9 |
| 119.7 |
| Other | (15.0 | ) | (13.1 | ) | | (47.1 | ) | (40.7 | ) | Consolidated | $ | 122.8 |
| $ | 121.8 |
| | $ | 375.6 |
| $ | 402.9 |
|
The following table presents a reconciliation of consolidated segment income to consolidated income from continuing operations before income taxes: | | | | | | | | | | | | | | | | Three months ended | | Nine months ended | In millions | September 30,
2019 | September 30,
2018 | | September 30,
2019 | September 30,
2018 | Segment income | $ | 122.8 |
| $ | 121.8 |
| | $ | 375.6 |
| $ | 402.9 |
| Deal-related costs and expenses | — |
| — |
| | (4.2 | ) | — |
| Inventory step-up | — |
| — |
| | (2.2 | ) | — |
| Restructuring and other | (5.9 | ) | (3.5 | ) | | (13.7 | ) | (28.1 | ) | Intangible amortization | (7.6 | ) | (8.6 | ) | | (24.1 | ) | (27.0 | ) | Pension settlement (loss) gain | (0.4 | ) | (2.2 | ) | | 11.8 |
| (2.2 | ) | Asset impairment | — |
| — |
| | (18.2 | ) | (6.0 | ) | (Loss) gain on sale of business | (0.1 | ) | (0.2 | ) | | 3.3 |
| (6.4 | ) | Loss on early extinguishment of debt | — |
| — |
| | — |
| (17.1 | ) | Corporate allocations | — |
| — |
| | — |
| (11.0 | ) | Net interest expense | (6.9 | ) | (4.3 | ) | | (23.6 | ) | (27.9 | ) | Other expense | (0.7 | ) | (1.2 | ) | | (3.1 | ) | (3.2 | ) | Income from continuing operations before income taxes | $ | 101.2 |
| $ | 101.8 |
| | $ | 301.6 |
| $ | 274.0 |
|
|