| Income from discontinued operations |
The income from discontinued operations relating to both ERwin and the sale of arcserve for the three and nine months ended December 31, 2014 and 2013 consisted of the following: | | | | | | | | | | Three Months Ended
December 31, | (in millions) | 2014 | | 2013 | Subscription and maintenance | $ | 7 |
| | $ | 22 |
| Software fees and other | 2 |
| | 13 |
| Total revenue | $ | 9 |
| | $ | 35 |
| Income from operations of discontinued components, net of tax expense of $2 million and $6 million, respectively | $ | 4 |
| | $ | 7 |
|
| | | | | | | | | | Nine Months Ended
December 31, | (in millions) | 2014 | | 2013 | Subscription and maintenance | $ | 38 |
| | $ | 67 |
| Software fees and other | 17 |
| | 36 |
| Total revenue | $ | 55 |
| | $ | 103 |
| Income from operations of discontinued components, net of tax expense of $8 million and $15 million, respectively | $ | 11 |
| | $ | 21 |
| Gain on disposal of discontinued component, net of tax | 19 |
| | — |
| Income from discontinued operations, net of tax | $ | 30 |
| | $ | 21 |
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