Revolving Credit Facility	6 Months Ended
Jun. 30, 2014
Debt Disclosure [Abstract]
Revolving Credit Facility	REVOLVING CREDIT FACILITY On December 31, 2013, the Company and Graybar Canada Limited, the Company's Canadian operating subsidiary (“Graybar Canada”), had an unsecured, five-year, $500,000 revolving credit agreement maturing in September 2016 with Bank of America, N.A. and other lenders named therein, which included a combined letter of credit sub-facility of up to $50,000, a U.S. swing line loan facility of up to $50,000, and a Canadian swing line loan facility of up to $20,000 (the "Credit Agreement"). The Credit Agreement also included a $100,000 sublimit (in U.S. or Canadian dollars) for borrowings by Graybar Canada and contained an accordion feature, which allowed the Company to request increases in the aggregate borrowing commitments of up to $200,000. On June 6, 2014, the Company and Graybar Canada amended and extended their five-year revolving credit facility, to, among other things, increase the availability from $500,000 to $550,000, which includes a combined letter of credit sub-facility of up to $50,000, a U.S. swing-line loan facility of up to $50,000, and a Canadian swing-line loan facility of up to $20,000, pursuant to the terms and conditions of a Second Amendment to Credit Agreement, dated as of June 6, 2014 (the “Amended Credit Agreement”), by and among Graybar, as parent borrower, Graybar Canada Limited, as a borrower, the lenders party thereto, Bank of America, N.A. as Domestic Administrative Agent, Domestic Swing Line Lender and Domestic L/C Issuer and Bank of America, N.A., acting through its Canada branch, as Canadian Administrative Agent, Canadian Swing Line Lender and Canadian L/C Issuer. The Amended Credit Agreement includes a $100,000 sublimit (in U.S. or Canadian dollars) for borrowings by Graybar Canada and contains an accordion feature, which allows Graybar to request increases to the aggregate borrowing commitments of up to$300,000. The five-year Amended Credit Agreement matures in June 2019. Borrowings of Graybar Canada may be in U.S. Dollars or Canadian Dollars. The obligations of Graybar Canada are secured by the guaranty of Graybar and any material domestic subsidiaries of Graybar (as defined in the Amended Credit Agreement). Under no circumstances will Graybar Canada use its borrowings to benefit Graybar or its operations, including without limitation to repay any of Graybar’s obligations under the facility. Interest on the Company’s borrowings under the Amended Credit Agreement are based on, at the borrower’s election, either (A) (i) the base rate (as defined in the Amended Credit Agreement), or (ii) LIBOR (in the case of Graybar as borrower) or (B) (i) the base rate (as defined in the agreement) or (ii) CDOR (in the case of Graybar Canada as borrower), in each case plus an applicable margin, as determined by the pricing grid set forth in the Amended Credit Agreement. In connection with such a borrowing, the applicable borrower also selects the term of the loan, up to six months. Swing line loans, which are daily loans, bear interest at a rate based on, at the borrower’s election, either (i) the base rate or (ii) the daily floating Eurodollar rate (or CDOR, in the case of Graybar Canada). In addition to interest payments, there are also certain fees and obligations associated with borrowings, swing-line loans, letters of credit and other administrative matters. The Amended Credit Agreement provides for a quarterly commitment fee ranging from 0.25% to 0.40% per annum, subject to adjustment based upon the consolidated leverage ratio for a fiscal quarter, and letter of credit fees ranging from 1.00% to 1.60% per annum payable quarterly, subject to such adjustment. Borrowings can be either base rate loans plus a margin ranging from 0.00% to 0.60% or LIBOR loans plus a margin ranging from 1.00% to 1.60%, subject to adjustment based upon the Company's consolidated leverage ratio. Availability under the Amended Credit Agreement is subject to the accuracy of representations and warranties and absence of a default and, in the case of Canadian borrowings denominated in Canadian dollars, the absence of a material adverse change in the national or international financial markets, which would make it impracticable to lend Canadian dollars. The Amended Credit Agreement contains customary affirmative and negative covenants for credit facilities of this type, including limitations on Graybar and its subsidiaries with respect to indebtedness, liens, changes in the nature of our business, investments, mergers and acquisitions, issuance of equity securities, dispositions of assets and dissolution of certain subsidiaries, transactions with affiliates, restricted payments (subject to incurrence tests, with certain exceptions), as well as securitizations, factoring transactions, and transactions with sanctioned parties or in violation of certain US or Canadian anti-corruption laws. There are also maximum leverage ratio and minimum interest coverage ratio financial covenants to which the Company is subject during the term of the Amended Credit Agreement. The Company was in compliance with all these covenants as of June 30, 2014 and December 31, 2013. The Amended Credit Agreement also provides for customary events of default, including a failure to pay principal, interest or fees when due, the fact that any representation or warranty made by any of the credit parties is materially incorrect, failure to comply with covenants, the occurrence of an event of default under certain other indebtedness of Graybar and its subsidiaries, the commencement of certain insolvency or receivership events affecting any of the credit parties, certain actions under ERISA and the occurrence of a change in control of any of the credit parties (subject to certain permitted transactions as described in the Amended Credit Agreement). Upon the occurrence of an event of default, the commitments of the lenders may be terminated and all outstanding obligations of the credit parties under the Amended Credit Agreement may be declared immediately due and payable. At June 30, 2014, the Company had total letters of credit of $6,547 outstanding, of which $372 were issued under the $550,000 revolving credit facility. At December 31, 2013, the Company had total letters of credit of $6,886 outstanding, of which $711 were issued under the $500,000 revolving credit facility. The letters of credit are used primarily to support certain workers compensation insurance policies. There were $72,450 and $82,442 in short-term borrowings outstanding under the revolving credit facility at June 30, 2014 and December 31, 2013, respectively.

REVOLVING CREDIT FACILITY

On December 31, 2013, the Company and Graybar Canada Limited, the Company's Canadian operating subsidiary (“Graybar Canada”), had an unsecured, five-year, $500,000 revolving credit agreement maturing in September 2016 with Bank of America, N.A. and other lenders named therein, which included a combined letter of credit sub-facility of up to $50,000, a U.S. swing line loan facility of up to $50,000, and a Canadian swing line loan facility of up to $20,000 (the "Credit Agreement"). The Credit Agreement also included a $100,000 sublimit (in U.S. or Canadian dollars) for borrowings by Graybar Canada and contained an accordion feature, which allowed the Company to request increases in the aggregate borrowing commitments of up to $200,000.

On June 6, 2014, the Company and Graybar Canada amended and extended their five-year revolving credit facility, to, among other things, increase the availability from $500,000 to $550,000, which includes a combined letter of credit sub-facility of up to $50,000, a U.S. swing-line loan facility of up to $50,000, and a Canadian swing-line loan facility of up to $20,000, pursuant to the terms and conditions of a Second Amendment to Credit Agreement, dated as of June 6, 2014 (the “Amended Credit Agreement”), by and among Graybar, as parent borrower, Graybar Canada Limited, as a borrower, the lenders party thereto, Bank of America, N.A. as Domestic Administrative Agent, Domestic Swing Line Lender and Domestic L/C Issuer and Bank of America, N.A., acting through its Canada branch, as Canadian Administrative Agent, Canadian Swing Line Lender and Canadian L/C Issuer. The Amended Credit Agreement includes a $100,000 sublimit (in U.S. or Canadian dollars) for borrowings by Graybar Canada and contains an accordion feature, which allows Graybar to request increases to the aggregate borrowing commitments of up to$300,000. The five-year Amended Credit Agreement matures in June 2019.

Borrowings of Graybar Canada may be in U.S. Dollars or Canadian Dollars. The obligations of Graybar Canada are secured by the guaranty of Graybar and any material domestic subsidiaries of Graybar (as defined in the Amended Credit Agreement). Under no circumstances will Graybar Canada use its borrowings to benefit Graybar or its operations, including without limitation to repay any of Graybar’s obligations under the facility.

Interest on the Company’s borrowings under the Amended Credit Agreement are based on, at the borrower’s election, either (A) (i) the base rate (as defined in the Amended Credit Agreement), or (ii) LIBOR (in the case of Graybar as borrower) or (B) (i) the base rate (as defined in the agreement) or (ii) CDOR (in the case of Graybar Canada as borrower), in each case plus an applicable margin, as determined by the pricing grid set forth in the Amended Credit Agreement. In connection with such a borrowing, the applicable borrower also selects the term of the loan, up to six months. Swing line loans, which are daily loans, bear interest at a rate based on, at the borrower’s election, either (i) the base rate or (ii) the daily floating Eurodollar rate (or CDOR, in the case of Graybar Canada). In addition to interest payments, there are also certain fees and obligations associated with borrowings, swing-line loans, letters of credit and other administrative matters.

The Amended Credit Agreement provides for a quarterly commitment fee ranging from 0.25% to 0.40% per annum, subject to adjustment based upon the consolidated leverage ratio for a fiscal quarter, and letter of credit fees ranging from 1.00% to 1.60% per annum payable quarterly, subject to such adjustment. Borrowings can be either base rate loans plus a margin ranging from 0.00% to 0.60% or LIBOR loans plus a margin ranging from 1.00% to 1.60%, subject to adjustment based upon the Company's consolidated leverage ratio. Availability under the Amended Credit Agreement is subject to the accuracy of representations and warranties and absence of a default and, in the case of Canadian borrowings denominated in Canadian dollars, the absence of a material adverse change in the national or international financial markets, which would make it impracticable to lend Canadian dollars.

The Amended Credit Agreement contains customary affirmative and negative covenants for credit facilities of this type, including limitations on Graybar and its subsidiaries with respect to indebtedness, liens, changes in the nature of our business, investments, mergers and acquisitions, issuance of equity securities, dispositions of assets and dissolution of certain subsidiaries, transactions with affiliates, restricted payments (subject to incurrence tests, with certain exceptions), as well as securitizations, factoring transactions, and transactions with sanctioned parties or in violation of certain US or Canadian anti-corruption laws. There are also maximum leverage ratio and minimum interest coverage ratio financial covenants to which the Company is subject during the term of the Amended Credit Agreement. The Company was in compliance with all these covenants as of June 30, 2014 and December 31, 2013.

The Amended Credit Agreement also provides for customary events of default, including a failure to pay principal, interest or fees when due, the fact that any representation or warranty made by any of the credit parties is materially incorrect, failure to comply with covenants, the occurrence of an event of default under certain other indebtedness of Graybar and its subsidiaries, the commencement of certain insolvency or receivership events affecting any of the credit parties, certain actions under ERISA and the occurrence of a change in control of any of the credit parties (subject to certain permitted transactions as described in the Amended Credit Agreement). Upon the occurrence of an event of default, the commitments of the lenders may be terminated and all outstanding obligations of the credit parties under the Amended Credit Agreement may be declared immediately due and payable.

At June 30, 2014, the Company had total letters of credit of $6,547 outstanding, of which $372 were issued under the $550,000 revolving credit facility. At December 31, 2013, the Company had total letters of credit of $6,886 outstanding, of which $711 were issued under the $500,000 revolving credit facility. The letters of credit are used primarily to support certain workers compensation insurance policies.

There were $72,450 and $82,442 in short-term borrowings outstanding under the revolving credit facility at June 30, 2014 and December 31, 2013, respectively.