Income taxes - Tax Rates (Details) |
6 Months Ended | 12 Months Ended | ||
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Dec. 31, 2015 |
Dec. 31, 2016 |
Jun. 30, 2015 |
Jun. 30, 2014 |
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| Her Majesty's Revenue and Customs (HMRC) | ||||
| Income taxes | ||||
| Tax rate (as a percent) | 20.00% | 20.00% | 20.75% | 22.50% |
| Internal Revenue Service (IRS) | ||||
| Income taxes | ||||
| Tax rate (as a percent) | 34.00% | 34.00% | 34.00% | 34.00% |
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- References No definition available.
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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