Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2022

Revenue Disclosure [Abstract]

Revenue from External Customers by Geographic Areas

Net sales by segment and region for the three months ended March 31, 2022 and 2021 were as follows:

	Three Months Ended March 31
($ in millions)	2022	2021
Performance Coatings
United States and Canada	$1,063	$998
Europe, Middle East and Africa ("EMEA")	949	811
Asia Pacific	274	276
Latin America	284	234
Total	$2,570	$2,319
Industrial Coatings
United States and Canada	$652	$571
EMEA	504	445
Asia Pacific	423	406
Latin America	159	140
Total	$1,738	$1,562
Total Net Sales
United States and Canada	$1,715	$1,569
EMEA	1,453	1,256
Asia Pacific	697	682
Latin America	443	374
Total PPG	$4,308	$3,881

Accounts Receivable, Allowance for Credit Loss

The following table summarizes the activity for the allowance for doubtful accounts for the three months ended March 31, 2022 and 2021:

	Trade Receivables Allowance for Doubtful Accounts
($ in millions)	2022	2021
January 1	$31	$44
Bad debt expense	43	—
Trade receivables written off as uncollectible, net of recoveries	(6)	(3)
March 31	$68	$41