Reportable Segment Information
 6 Months Ended
Jun. 30, 2017
Segment Reporting [Abstract]  
Reportable Segment Information
Reportable Business Segment Information
PPG is a multinational manufacturer with 10 operating segments that are organized based on the Company’s major product lines. These operating segments are also the Company’s reporting units for purposes of testing goodwill for impairment. The operating segments have been aggregated based on economic similarities, the nature of their products, production processes, end-use markets and methods of distribution into two reportable business segments.
The Performance Coatings reportable segment is comprised of the refinish, aerospace, architectural coatings – Americas and Asia-Pacific, architectural coatings - EMEA, and protective and marine coatings operating segments. This reportable segment primarily supplies a variety of protective and decorative coatings, sealants and finishes along with paint strippers, stains and related chemicals, as well as transparencies and transparent armor.
The Industrial Coatings reportable segment is comprised of the automotive original equipment manufacturer (“OEM”) coatings, industrial coatings, packaging coatings, coatings services and the specialty coatings and materials operating segments. This reportable segment primarily supplies a variety of protective and decorative coatings and finishes along with adhesives, sealants, metal pretreatment products, optical monomers and coatings, precipitated silicas, Teslin® and other specialty materials, and coatings services.
Reportable segment net sales and segment income for the three and six months ended June 30, 2017 and 2016 were as follows: 
 
Three Months Ended
June 30
 
Six Months Ended
June 30
($ in millions)
2017
 
2016
 
2017
 
2016
Net sales:
 
 
 
 
 
 
 
Performance Coatings
$
2,301

 
$
2,338

 
$
4,318

 
$
4,377

Industrial Coatings
1,505

 
1,444

 
2,974

 
2,816

Total
$
3,806

 
$
3,782

 
$
7,292

 
$
7,193

Segment income:
 
 
 
 
 
 
 
Performance Coatings
$
413

 
$
428

 
$
698

 
$
707

Industrial Coatings
264

 
292

 
537

 
557

Total
$
677

 
$
720

 
1,235

 
1,264

Corporate
(27
)
 
(60
)
 
(90
)
 
(123
)
Interest expense, net of interest income
(22
)
 
(24
)
 
(43
)
 
(48
)
Legacy items (a)
5

 
(10
)
 
(3
)
 
(21
)
Asset write-down
—

 
(10
)
 
—

 
(10
)
Gain from the sale of an equity affiliate
—

 
20

 
—

 
20

Pension settlement charge
—

 
—

 
(22
)
 
—

Gain from sale of a business
25

 
—

 
25

 
—

Income from a legal settlement
18

 
—

 
18

 
—

Transaction-related costs (b)
(5
)
 
(6
)
 
(9
)
 
(8
)
Income from continuing operations before income taxes
$
671

 
$
630

 
$
1,111

 
$
1,074

(a)
Legacy items include current costs related to former operations of the Company, including pension and other postretirement benefit costs, certain charges for legal matters and environmental remediation costs, and certain other charges which are not associated with PPG's current business portfolio. Until June 2016, legacy included the quarterly remeasurement of the asbestos settlement liability and equity forward.
(b)
Transaction-related costs include advisory, legal, accounting, valuation and other professional or consulting fees incurred to effect significant acquisitions, as well as similar fees and other costs to effect disposals not classified as discontinued operations. These costs may also include the flow-through cost of sales for the step up to fair value of inventories acquired in acquisitions. These costs also include certain severance costs and charges associated with the Company's recent business portfolio transformation.