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Other Income (Tables)
 12 Months Ended
Dec. 31, 2021
Other Income and Expenses [Abstract]  
Components of Other Earnings
($ in millions)202120202019
Gain on sale of assets(1)
$47 $5 $7 
Royalty income8 7 8 
Share of net earnings of equity affiliates (See Note 5)15 8 11 
Income from legal settlements22 — — 
Other80 48 63 
Total$172 $68 $89 
(1)In 2021, PPG recognized a $34 million gain on the sale of a production facility in connection with the Company’s manufacturing footprint consolidation plans and associated restructuring programs.