Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Income taxes (Foreign rate differential by tax jurisdiction) (Details)

v3.8.0.1
Income taxes (Foreign rate differential by tax jurisdiction) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Income Tax Disclosure [Line Items]      
Pre-tax income (loss) $ 1,418,353 $ 1,433,480 $ 1,603,051
Local statutory tax rate 12.50% 12.50% 12.50%
Tax variance as a result of global activities [1] $ (13,503) $ (5,611) $ (10,462)
Permanent differences (182,481) [2] (233,084) [3] (237,352) [4]
Income from continuing operations before income tax 1,235,872 1,200,396 1,365,699
Ireland      
Income Tax Disclosure [Line Items]      
Pre-tax income (loss) $ 1,212,029 $ 1,151,387 $ 1,212,190
Local statutory tax rate [5] 12.50% 12.50% 12.50%
Variance to Irish statutory tax rate of 12.5% 0.00% 0.00% 0.00%
Tax variance as a result of global activities [1] $ 0 $ 0 $ 0
United States      
Income Tax Disclosure [Line Items]      
Pre-tax income (loss) $ 72,390 $ 44,238 $ (43,825)
Local statutory tax rate [5] 35.70% 36.30% 36.30%
Variance to Irish statutory tax rate of 12.5% 23.20% 23.80% 23.80%
Tax variance as a result of global activities [1] $ 16,744 $ 10,529 $ (10,430)
The Netherlands      
Income Tax Disclosure [Line Items]      
Pre-tax income (loss) $ (61,086) $ 37,580 $ 175,897
Local statutory tax rate [5] 25.00% 25.00% 25.00%
Variance to Irish statutory tax rate of 12.5% 12.50% 12.50% 12.50%
Tax variance as a result of global activities [1] $ (7,636) $ 4,698 $ 21,987
Isle of Man      
Income Tax Disclosure [Line Items]      
Pre-tax income (loss) $ 185,882 $ 181,286 $ 181,118
Local statutory tax rate [5] 0.00% 0.00% 0.00%
Variance to Irish statutory tax rate of 12.5% (12.50%) (12.50%) (12.50%)
Tax variance as a result of global activities [1] $ (23,235) $ (22,661) $ (22,640)
Other      
Income Tax Disclosure [Line Items]      
Pre-tax income (loss) $ 9,138 $ 18,989 $ 77,671
Local statutory tax rate [5] 19.30% 22.10% 13.30%
Variance to Irish statutory tax rate of 12.5% 6.80% 9.60% 0.80%
Tax variance as a result of global activities [1] $ 624 $ 1,823 $ 621
[1] The tax variance as a result of global activities is primarily caused by our operations in countries with a higher or lower statutory tax rate than the statutory tax rate in Ireland.
[2] The 2017 permanent differences included non-deductible share-based compensation in Ireland and in the Netherlands, impacts of the change in tax rate in the United States, and a valuation allowance change in respect of U.S., Dutch and Irish tax losses.
[3] The 2016 permanent differences included non-deductible share-based compensation in Ireland and in the Netherlands, non-deductible intercompany interest allocated to the United States, and a valuation allowance taken in respect of U.S., Dutch and Irish tax losses.
[4] The 2015 permanent differences included the non-deductible intercompany interest allocated to the United States, non-deductible share-based compensation in the Netherlands, non-deductible costs relating to the transfer of certain functions from the Netherlands to Ireland, and a valuation allowance taken in respect of U.S. and Dutch tax losses.
[5] The local statutory income tax expense for our significant tax jurisdictions (Ireland, the United States, the Netherlands and Isle of Man) does not differ from the actual income tax expense.