Shareholders' Equity (Tables)

3 Months Ended

Mar. 31, 2018

Equity [Abstract]

Change in Total Shareholders' Equity

Changes to shareholders’ equity for the three months ended March 31, 2018 and 2017 were as follows:

($ in millions)	Total PPG Shareholders’ Equity			Non-controlling Interests			Total
January 1, 2018		$5,557			$115			$5,672
Net income	334			6			340
Other comprehensive income, net of tax	52			2			54
Reclassifications from other comprehensive income to retained earnings - Adoption ASU 2018 - 02	107			—			107
Cash dividends	(112		)	—			(112		)
Issuance of treasury stock	31			—			31
Stock repurchase program	(600		)	—			(600		)
Stock-based compensation activity	(19		)	—			(19		)
Other	(4		)	(2		)	(6		)
March 31, 2018		$5,346			$121			$5,467

($ in millions)	Total PPG Shareholders’ Equity			Non-controlling Interests			Total
January 1, 2017		$4,828			$87			$4,915
Net income (As Restated)	337			5			342
Other comprehensive income, net of tax	280			7			287
Cash dividends	(103		)	—			(103		)
Issuance of treasury stock	34			—			34
Stock repurchase program	(163		)	—			(163		)
Stock-based compensation activity (As Restated)	(21		)	—			(21		)
Other	—			(5		)	(5		)
March 31, 2017 (As Restated)		$5,192			$94			$5,286