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Business Combinations (Tables) | 9 Months Ended
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Sep. 30, 2021
Business Combinations [Abstract] |
Disposal Groups, Including Discontinued Operations [Table Text Block] | The major classes of assets and liabilities of these entities included in the PPG consolidated balance sheet are as as follows:
($ in millions) | September 30, 2021 |  | December 31, 2020
Cash and cash equivalents | $14 |  |  | $20 |
Receivables | — |  |  | 5 |
Inventories | — |  |  | 5 |
Assets held for sale | $14 |  |  | $30 |
Accounts payable and accrued liabilities | $14 |  |  | $14 |
Operating lease liabilities | 6 |  |  | 6 |
Deferred income taxes | 3 |  |  | 3 |
Other liabilities | 1 |  |  | 1 |
Liabilities held for sale | $24 |  |  | $24 |

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