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Income Taxes - Summary of Income Tax Rate (Detail)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Income Tax Disclosure [Abstract]    
Canadian statutory income tax rate 26.50% 26.50%
Manufacturing and processing profits deduction (0.40%) (0.40%)
Foreign rate differentials 0.80% 0.50%
Losses not benefited 1.10% 1.20%
Utilization of losses previously not benefited (0.10%) (0.20%)
Earnings of equity accounted investees (0.80%) (1.00%)
Tax on repatriation of foreign earnings 2.10% 0.70%
Valuation allowance on deferred tax assets   (0.10%)
Austrian tax reform   1.20%
Write off of investments (1.40%)  
Research and development tax credits (1.30%) (1.60%)
Reserve for uncertain tax positions (0.30%) (1.70%)
Others 0.60% 1.10%
Effective income tax rate 26.80% 26.20%