Shareholders' Equity (Tables)

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Change in Total Shareholders' Equity

Changes to shareholders’ equity for the six months ended June 30, 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	705			10			715
Other comprehensive income, net of tax	(218		)	(8		)	(226		)
Reclassifications from other comprehensive income to retained earnings - Adoption ASU 2018-02 (a)	107			—			107
Cash dividends	(222		)	(2		)	(224		)
Issuance of treasury stock	33			—			33
Stock repurchase program	(1,063		)	—			(1,063		)
Stock-based compensation activity	(12		)	—			(12		)
Other	(3		)	(16		)	(19		)
June 30, 2018		$4,884			$99			$4,983

($ in millions)	Total PPG Shareholders’ Equity			Non-controlling Interests			Total
January 1, 2017		$4,828			$87			$4,915
Net income (As Restated)	833			10			843
Other comprehensive income, net of tax	297			13			310
Cash dividends	(205		)	—			(205		)
Issuance of treasury stock	49			—			49
Stock repurchase program	(163		)	—			(163		)
Stock-based compensation activity (As Restated)	(16		)	—			(16		)
Other	—			(5		)	(5		)
June 30, 2017 (As Restated)		$5,623			$105			$5,728

(a) See Note 3, "New Accounting Standards" for more information.