Debt	9 Months Ended
Sep. 30, 2012
Debt Disclosure [Abstract]
Debt	Debt In September 2012, PPG entered into a five-year credit agreement with several banks and financial institutions (the “Credit Agreement”). The Credit Agreement provides for a $1.2 billion unsecured revolving credit facility. In connection with entering into this Credit Agreement, the Company terminated its existing $1.2 billion revolving credit facility that was scheduled to expire in August 2013. There was no outstanding amount due under this revolving facility at the time of its termination. The Company has the ability to increase the size of the Credit Agreement by up to an additional $300 million, subject to the receipt of lender commitments and other conditions. The Credit Agreement will terminate and all amounts outstanding thereunder will be due and payable on September 12, 2017, although under circumstances specified in the Credit Agreement and subject to the lenders' approval, the Company may make one request to extend such termination date by one year with respect to the approving lenders. The Company has the right, subject to certain conditions set forth in the Credit Agreement, to designate certain subsidiaries of the Company as borrowers under the Credit Agreement. In connection with any such designation, the Company is required to guarantee the obligations of any such subsidiaries under the Credit Agreement. Borrowings under the Credit Agreement may be made in U.S. dollars or in euros. The Credit Agreement provides that loans will bear interest at rates based, at the Company's option, on one of two specified base rates plus a margin based on certain formulas defined in the Credit Agreement. Additionally, the Credit Agreement contains a Commitment Fee, as defined in the Credit Agreement, on the amount of unused commitments under the Credit Agreement ranging from 0.080% to 0.225% per annum. The applicable date and the Commitment Fee will be determined with reference to the pricing grid set forth in the Credit Agreement referencing the ratings established by Standard & Poor's Financial Services LLC and Moody's Investor Service Inc. for the Company's non-credit enhanced, long-term, senior, unsecured debt. There were no amounts outstanding under the Credit Agreement at September 30, 2012. The Credit Agreement contains usual and customary restrictive covenants for facilities of its type, which include, with specified exceptions, limitations on the Company's ability to create liens or other encumbrances, to enter into sale and leaseback transactions and to enter into consolidations, mergers or transfers of all or substantially all of its assets. The Credit Agreement maintains the same restrictive covenant as the prior revolving credit facility whereby the Company must maintain a ratio of Total Indebtedness to Total Capitalization, as defined in the Credit Agreement, of sixty percent or less. On July 31, 2012, PPG completed a public offering of $400 million in aggregate principal amount of its 2.70% Notes due 2022 (the "2022 Notes”). The 2022 Notes were offered by the Company pursuant to its existing shelf registration statement. The proceeds of this offering of $397 million, net of discount and issuance costs, are expected to be used to repay a portion of the $600 million of 5.75% notes due in March 2013 (the "2013 Notes”). The discount and issuance costs related to the 2022 Notes, which totaled $3 million, will be amortized to interest expense over the life of the 2022 Notes. Concurrently with the issuance of the 2022 Notes, PPG settled forward starting swaps with a payment of $121 million on July 30, 2012. This loss will be amortized to interest expense over the term of the notes, resulting in an effective interest rate of 5.8%. (Refer to Note 15, "Derivative Financial Instruments and Hedge Activities" for additional information). In April 2012, the Company reclassified the $600 million of the 2013 Notes to Short-term debt and current portion of long-term debt in the accompanying condensed consolidated balance sheet as these notes are due to be repaid in March 2013. Also during the nine months ended September 30, 2012, the Company assumed $120 million of debt in the Dyrup acquisition; repaid $119 million of that debt, and repaid the $71 million of 6.875% notes upon their maturity. During the nine months ended September 30, 2011, the Company repaid a $400 million three year unsecured term loan, which had a scheduled maturity date of June 2012. There was no prepayment penalty.

Debt

In September 2012, PPG entered into a five-year credit agreement with several banks and financial institutions (the “Credit Agreement”). The Credit Agreement provides for a $1.2 billion unsecured revolving credit facility. In connection with entering into this Credit Agreement, the Company terminated its existing $1.2 billion revolving credit facility that was scheduled to expire in August 2013. There was no outstanding amount due under this revolving facility at the time of its termination. The Company has the ability to increase the size of the Credit Agreement by up to an additional $300 million, subject to the receipt of lender commitments and other conditions. The Credit Agreement will terminate and all amounts outstanding thereunder will be due and payable on September 12, 2017, although under circumstances specified in the Credit Agreement and subject to the lenders' approval, the Company may make one request to extend such termination date by one year with respect to the approving lenders. The Company has the right, subject to certain conditions set forth in the Credit Agreement, to designate certain subsidiaries of the Company as borrowers under the Credit Agreement. In connection with any such designation, the Company is required to guarantee the obligations of any such subsidiaries under the Credit Agreement.

Borrowings under the Credit Agreement may be made in U.S. dollars or in euros. The Credit Agreement provides that loans will bear interest at rates based, at the Company's option, on one of two specified base rates plus a margin based on certain formulas defined in the Credit Agreement. Additionally, the Credit Agreement contains a Commitment Fee, as defined in the Credit Agreement, on the amount of unused commitments under the Credit Agreement ranging from 0.080% to 0.225% per annum. The applicable date and the Commitment Fee will be determined with reference to the pricing grid set forth in the Credit Agreement referencing the ratings established by Standard & Poor's Financial Services LLC and Moody's Investor Service Inc. for the Company's non-credit enhanced, long-term, senior, unsecured debt. There were no amounts outstanding under the Credit Agreement at September 30, 2012.

The Credit Agreement contains usual and customary restrictive covenants for facilities of its type, which include, with specified exceptions, limitations on the Company's ability to create liens or other encumbrances, to enter into sale and leaseback transactions and to enter into consolidations, mergers or transfers of all or substantially all of its assets. The Credit Agreement maintains the same restrictive covenant as the prior revolving credit facility whereby the Company must maintain a ratio of Total Indebtedness to Total Capitalization, as defined in the Credit Agreement, of sixty percent or less.

On July 31, 2012, PPG completed a public offering of $400 million in aggregate principal amount of its 2.70% Notes due 2022 (the "2022 Notes”). The 2022 Notes were offered by the Company pursuant to its existing shelf registration statement. The proceeds of this offering of $397 million, net of discount and issuance costs, are expected to be used to repay a portion of the $600 million of 5.75% notes due in March 2013 (the "2013 Notes”). The discount and issuance costs related to the 2022 Notes, which totaled $3 million, will be amortized to interest expense over the life of the 2022 Notes. Concurrently with the issuance of the 2022 Notes, PPG settled forward starting swaps with a payment of $121 million on July 30, 2012. This loss will be amortized to interest expense over the term of the notes, resulting in an effective interest rate of 5.8%. (Refer to Note 15, "Derivative Financial Instruments and Hedge Activities" for additional information).

In April 2012, the Company reclassified the $600 million of the 2013 Notes to Short-term debt and current portion of long-term debt in the accompanying condensed consolidated balance sheet as these notes are due to be repaid in March 2013. Also during the nine months ended September 30, 2012, the Company assumed $120 million of debt in the Dyrup acquisition; repaid $119 million of that debt, and repaid the $71 million of 6.875% notes upon their maturity.

During the nine months ended September 30, 2011, the Company repaid a $400 million three year unsecured term loan, which had a scheduled maturity date of June 2012. There was no prepayment penalty.