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Borrowings
 6 Months Ended
Jun. 30, 2017
Debt Disclosure [Abstract]  
Borrowings
Borrowings
In May 2016, PPG entered into two $250 million Term Loan Credit Agreements and subsequently prepaid the loans in December 2016.
In January 2016, PPG’s $250 million 1.9% notes matured, and PPG repaid these notes with cash on hand.