2102100 - Disclosure - Acquisition charges link:presentationLink link:calculationLink link:definitionLink 2402402 - Disclosure - Acquisition charges (Details) link:presentationLink link:calculationLink link:definitionLink 2302301 - Disclosure - Acquisition charges (Tables) link:presentationLink link:calculationLink link:definitionLink 1003000 - Statement - Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 1003501 - Statement - Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1004000 - Statement - Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 1002000 - Statement - Consolidated Statements of Comprehensive Income link:presentationLink link:calculationLink link:definitionLink 1001000 - Statement - Consolidated Statements of Income link:presentationLink link:calculationLink link:definitionLink 2109100 - Disclosure - Contingencies link:presentationLink link:calculationLink link:definitionLink 2409401 - Disclosure - Contingencies (Details) link:presentationLink link:calculationLink link:definitionLink 2108100 - Disclosure - Debt and lines of credit link:presentationLink link:calculationLink link:definitionLink 2408402 - Disclosure - Debt and lines of credit (Details) link:presentationLink link:calculationLink link:definitionLink 2308301 - Disclosure - Debt and lines of credit (Tables) link:presentationLink link:calculationLink link:definitionLink 2101100 - Disclosure - Description of business and significant accounting policies and practices link:presentationLink link:calculationLink link:definitionLink 2401403 - Disclosure - Description of business and significant accounting policies and practices (Details) link:presentationLink link:calculationLink link:definitionLink 2201201 - Disclosure - Description of business and significant accounting policies and practices (Policies) link:presentationLink link:calculationLink link:definitionLink 2301302 - Disclosure - Description of business and significant accounting policies and practices (Tables) link:presentationLink link:calculationLink link:definitionLink 0001000 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 2106100 - Disclosure - Goodwill and acquisition-related intangibles link:presentationLink link:calculationLink link:definitionLink 2406402 - Disclosure - Goodwill and acquisition-related intangibles (Details) link:presentationLink link:calculationLink link:definitionLink 2306301 - Disclosure - Goodwill and acquisition-related intangibles (Tables) link:presentationLink link:calculationLink link:definitionLink 2104100 - Disclosure - Income taxes link:presentationLink link:calculationLink link:definitionLink 2404401 - Disclosure - Income taxes (Details) link:presentationLink link:calculationLink link:definitionLink 2107100 - Disclosure - Postretirement benefit plans link:presentationLink link:calculationLink link:definitionLink 2407402 - Disclosure - Postretirement benefit plans (Details) link:presentationLink link:calculationLink link:definitionLink 2407403 - Disclosure - Postretirement benefit plans (Narrative) (Details) link:presentationLink link:calculationLink link:definitionLink 2307301 - Disclosure - Postretirement benefit plans (Tables) link:presentationLink link:calculationLink link:definitionLink 2103100 - Disclosure - Restructuring charges/other link:presentationLink link:calculationLink link:definitionLink 2403402 - Disclosure - Restructuring charges/other (Details) link:presentationLink link:calculationLink link:definitionLink 2303301 - Disclosure - Restructuring charges/other (Tables) link:presentationLink link:calculationLink link:definitionLink 2111100 - Disclosure - Segment data link:presentationLink link:calculationLink link:definitionLink 2411402 - Disclosure - Segment data (Details) link:presentationLink link:calculationLink link:definitionLink 2311301 - Disclosure - Segment data (Tables) link:presentationLink link:calculationLink link:definitionLink 2110100 - Disclosure - Supplemental financial information link:presentationLink link:calculationLink link:definitionLink 2410403 - Disclosure - Supplemental financial information - Details on amounts reclassified out of AOCI recognized within Net income (Details) link:presentationLink link:calculationLink link:definitionLink 2410402 - Disclosure - Supplemental financial information - Prepaid expenses and other current assets (Details) link:presentationLink link:calculationLink link:definitionLink 2310301 - Disclosure - Supplemental financial information (Tables) link:presentationLink link:calculationLink link:definitionLink 2105100 - Disclosure - Valuation of debt and equity investments and certain liabilities link:presentationLink link:calculationLink link:definitionLink 2405403 - Disclosure - Valuation of debt and equity investments and certain liabilities - Fair value assets and liabilities measured on recurring basis (Details) link:presentationLink link:calculationLink link:definitionLink 2405402 - Disclosure - Valuation of debt and equity investments and certain liabilities - Investments at fair value (Details) link:presentationLink link:calculationLink link:definitionLink 2305301 - Disclosure - Valuation of debt and equity investments and certain liabilities (Tables) link:presentationLink link:calculationLink link:definitionLink