00100 - Statement - Statements of Net Assets Available for Benefits link:presentationLink link:calculationLink link:definitionLink 00200 - Statement - Statements of Changes in Net Assets Available for Benefits link:presentationLink link:calculationLink link:definitionLink 40402 - Disclosure - Master Trust - Statements of Changes in Net Assets of the Master Trust (Details) link:presentationLink link:calculationLink link:definitionLink 00090 - Document - Document and Entity Information link:presentationLink link:calculationLink link:definitionLink 10101 - Disclosure - Description of Plan link:presentationLink link:calculationLink link:definitionLink 10201 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:calculationLink link:definitionLink 10301 - Disclosure - Investment Contracts link:presentationLink link:calculationLink link:definitionLink 10401 - Disclosure - Master Trust link:presentationLink link:calculationLink link:definitionLink 10501 - Disclosure - Fair Value Measurements link:presentationLink link:calculationLink link:definitionLink 10601 - Disclosure - Income Tax Status link:presentationLink link:calculationLink link:definitionLink 10701 - Disclosure - Risks and Uncertainties link:presentationLink link:calculationLink link:definitionLink 10801 - Disclosure - Plan Termination link:presentationLink link:calculationLink link:definitionLink 10901 - Disclosure - Related-Party and Party-in-interest Transactions link:presentationLink link:calculationLink link:definitionLink 11001 - Disclosure - Plan Amendments and Plan Merger link:presentationLink link:calculationLink link:definitionLink 11101 - Disclosure - Plan Correction link:presentationLink link:calculationLink link:definitionLink 11201 - Disclosure - Schedule H, Part IV, 4i - Schedule of Assets (Held at End of Year) link:presentationLink link:calculationLink link:definitionLink 20202 - Disclosure - Summary of Significant Accounting Policies (Policies) link:presentationLink link:calculationLink link:definitionLink 30403 - Disclosure - Master Trust (Tables) link:presentationLink link:calculationLink link:definitionLink 30503 - Disclosure - Fair Value Measurements (Tables) link:presentationLink link:calculationLink link:definitionLink 40101 - Disclosure - Description of Plan - General and Contributions (Details) link:presentationLink link:calculationLink link:definitionLink 40102 - Disclosure - Description of Plan - Vesting (Details) link:presentationLink link:calculationLink link:definitionLink 40103 - Disclosure - Description of Plan - Notes Receivable from Participants (Details) link:presentationLink link:calculationLink link:definitionLink 40104 - Disclosure - Description of Plan - Forfeitures (Details) link:presentationLink link:calculationLink link:definitionLink 40401 - Disclosure - Master Trust - Investment Holdings (Details) link:presentationLink link:calculationLink link:definitionLink 40501 - Disclosure - Fair Value Measurements - Plan's fair value hierarchy for Master Trust's assets and the Plan's assets held outside of the Master Trust measured at fair value (Details) link:presentationLink link:calculationLink link:definitionLink 40502 - Disclosure - Fair Value Measurements - Plan investments for which fair value is measured using the NAV per share (Details) link:presentationLink link:calculationLink link:definitionLink 40601 - Disclosure - Income Tax Status (Details) link:presentationLink link:calculationLink link:definitionLink 40901 - Disclosure - Related-Party and Party-in-interest Transactions (Details) link:presentationLink link:calculationLink link:definitionLink 41001 - Disclosure - Plan Amendments and Plan Merger (Details) link:presentationLink link:calculationLink link:definitionLink 41201 - Disclosure - Schedule H, Part IV, 4i - Schedule of Assets (Held at End of Year) (Details) link:presentationLink link:calculationLink link:definitionLink 99900 - Disclosure - Standard And Custom Axis Domain Defaults link:presentationLink link:calculationLink link:definitionLink