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Quarterly Financial Information (unaudited)
 12 Months Ended
Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]  
Quarterly Financial Information (unaudited)
 
2018 Quarter Ended
Full Year 2018(1)

($ in millions, except per share amounts)
March 31
June 30
September 30
December 31
Net sales

$3,781


$4,131


$3,817


$3,645


$15,374

Cost of sales(2)
2,181

2,379

2,253

2,188

9,001

Net income attributable to PPG
 
 
 
 
 
Continuing operations

$328


$371


$368


$256


$1,323

Discontinued operations
6

—

10

2

18

Net income

$334


$371


$378


$258


$1,341

Earnings per common share
 
 
 
 
 
Continuing operations

$1.32


$1.51


$1.52


$1.07


$5.43

Discontinued operations
0.02

—

0.04

0.01

0.07

Earnings per common share

$1.34


$1.51


$1.56


$1.08


$5.50

Earnings per common share - assuming dilution
 
 
 
 
 
Continuing operations

$1.31


$1.51


$1.51


$1.07


$5.40

Discontinued operations
0.02

—

0.04

0.01

0.07

Earnings per common share – assuming dilution

$1.33


$1.51


$1.55


$1.08


$5.47

 
 
 
 
 
 
 
2017 Quarter Ended
Full Year 2017(1)

($ in millions except per share amounts)
March 31
June 30
September 30
December 31
Net sales

$3,486


$3,804


$3,776


$3,682


$14,748

Cost of sales(2)
1,902

2,083

2,104

2,120

8,209

Net income attributable to PPG
 
 
 
 
 
Continuing operations

$331


$497


$393


$148


$1,369

Discontinued operations
6

(1
)
217

3

225

Net income

$337


$496


$610


$151


$1,594

Earnings per common share
 
 
 
 
 
Continuing operations

$1.29


$1.93


$1.53


$0.59


$5.34

Discontinued operations
0.02

—

0.85

0.01

0.88

Earnings per common share

$1.31


$1.93


$2.38


$0.60


$6.22

Earnings per common share - assuming dilution
 
 
 
 
 
Continuing operations

$1.28


$1.92


$1.52


$0.58


$5.31

Discontinued operations
0.02

—

0.84

0.01

0.87

Earnings per common share – assuming dilution

$1.30


$1.92


$2.36


$0.59


$6.18

(1)
Full year earnings-per-share was calculated using the full year weighted average shares outstanding. As such, the sum of the quarters may not equal the total earnings-per-share for the year.
(2)
Exclusive of depreciation and amortization.