2101100 - Disclosure - Basis of Presentation
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2106100 - Disclosure - Business Combinations
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2406402 - Disclosure - Business Combinations - Narrative (Details)
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2406403 - Disclosure - Business Combinations - Summary of Estimates of Fair values of Assets Acquired and Liabilities Assumed (Details)
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2306301 - Disclosure - Business Combinations (Tables)
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2114100 - Disclosure - Business Segment Information
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2414404 - Disclosure - Business Segment Information - Distribution Income from Operations, including Restructuring, by Geographical Area (Details)
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2414406 - Disclosure - Business Segment Information - Distribution of Depreciation and Amortization by Geographical Area (Details)
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2414403 - Disclosure - Business Segment Information - Distribution of Net Revenue by Geographical Area (Details)
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2414405 - Disclosure - Business Segment Information - Distribution of Property, Plant and Equipment, Net, by Geographical Area (Details)
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2414407 - Disclosure - Business Segment Information - Distribution of Total Assets by Geographical Area (Details)
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2414402 - Disclosure - Business Segment Information - Narrative (Details)
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2314301 - Disclosure - Business Segment Information (Tables)
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1001000 - Statement - Condensed Consolidated Balance Sheets
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1001501 - Statement - Condensed Consolidated Balance Sheets (Parenthetical)
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1003000 - Statement - Condensed Consolidated Statements of Cash Flows
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1002000 - Statement - Condensed Consolidated Statements of Operations
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1004000 - Statement - Condensed Consolidated Statements of Shareholders' Equity and Comprehensive Income
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0001000 - Document - Document and Entity Information
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2105100 - Disclosure - Goodwill
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2405402 - Disclosure - Goodwill (Details)
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2305301 - Disclosure - Goodwill (Tables)
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2115100 - Disclosure - Impact of change in accounting policies
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2415401 - Disclosure - Impact of change in accounting policies - Narrative (Details)
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2110100 - Disclosure - Income Taxes
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2410402 - Disclosure - Income Taxes - Income Taxes Recognized During Period (Details)
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2410403 - Disclosure - Income Taxes - Narrative (Details)
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2310301 - Disclosure - Income Taxes (Tables)
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2111100 - Disclosure - Net income per ordinary share
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2411402 - Disclosure - Net income per ordinary share - Reconciliation of Number of Shares Used in Computation of Basic and Diluted Net Income Per Ordinary Share (Details)
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2311301 - Disclosure - Net income per ordinary share (Tables)
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2109100 - Disclosure - Operating leases
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2409404 - Disclosure - Operating leases - Adjustments for Adoption and Other Items (Details)
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2409402 - Disclosure - Operating leases - Lease Costs (Details)
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2409403 - Disclosure - Operating leases - Narrative (Details)
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2409405 - Disclosure - Operating leases - Operating Lease Maturity (Details)
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2409405 - Disclosure - Operating leases - Operating Lease Maturity (Details)
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2309301 - Disclosure - Operating leases (Tables)
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2107100 - Disclosure - Restructuring
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2407404 - Disclosure - Restructuring - 2017 Restructuring Plan (Details)
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2407403 - Disclosure - Restructuring - 2018 Restructuring Plan (Details)
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2407402 - Disclosure - Restructuring - Narrative (Details)
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2307301 - Disclosure - Restructuring (Tables)
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2103100 - Disclosure - Revenue
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2403402 - Disclosure - Revenue (Details)
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2303301 - Disclosure - Revenue (Tables)
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2112100 - Disclosure - Share-based Awards
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2412402 - Disclosure - Share-based Awards - Narrative (Details)
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2412407 - Disclosure - Share-based Awards - Schedule of Non-cash Stock Compensation Expense (Details)
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2412405 - Disclosure - Share-based Awards - Schedule of Weighted Average Fair Values and Assumptions Used (Details)
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2412404 - Disclosure - Share-based Awards - Summary of Movement in Non-Vested Share Options (Details)
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2412406 - Disclosure - Share-based Awards - Summary of RSU and PSU Activity (Details)
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2412403 - Disclosure - Share-based Awards - Summary of Stock Option Activity (Details)
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2312301 - Disclosure - Share-based Awards (Tables)
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2113100 - Disclosure - Share Capital
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2413401 - Disclosure - Share Capital - Narrative (Details)
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2102100 - Disclosure - Significant accounting policies
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2202201 - Disclosure - Significant accounting policies (Policies)
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2104100 - Disclosure - Trade accounts receivable, unbilled services (contract assets) and payments on account (contract liabilities)
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2404402 - Disclosure - Trade accounts receivable, unbilled services (contract assets) and payments on account (contract liabilities) - Contract Assets and Liabilities (Details)
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2404403 - Disclosure - Trade accounts receivable, unbilled services (contract assets) and payments on account (contract liabilities) - Revenue Remaining Performance Obligations (Details)
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2304301 - Disclosure - Trade accounts receivable, unbilled services (contract assets) and payments on account (contract liabilities) (Tables)
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