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Entity [Domain] Entity [Domain] Equity method investments Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Cash payments for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Document Fiscal Year Focus Document Fiscal Year Focus Basis of Presentation Basis of Accounting, Policy [Policy Text Block] 4.00% senior exchangeable notes due 2025 4.00% senior exchangeable notes due 2025 Senior Exchangeable Notes 4.00% Due 2025 [Member] Senior Exchangeable Notes 4.00% Due 2025 Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Accrued compensation and related benefits Accrued Employee Benefits, Current Percentage of ownership 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