Shareholders' Equity (Details) - USD ($)
$ in Millions |
3 Months Ended |
9 Months Ended |
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
| Increase (Decrease) in Stockholders' Equity [Roll Forward] |
|
|
|
|
| Beginning balance |
|
|
$ 5,069
|
$ 5,265
|
| Net income |
$ (179)
|
$ 439
|
551
|
1,109
|
| Other comprehensive income, net of tax |
209
|
(263)
|
160
|
(484)
|
| Cash dividends |
|
|
(309)
|
(287)
|
| Issuance of treasury stock |
|
|
51
|
69
|
| Purchase of treasury stock |
|
|
(400)
|
(501)
|
| Stock-based compensation activity |
|
|
12
|
34
|
| Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders |
|
|
(4)
|
(3)
|
| Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests |
|
|
(9)
|
(6)
|
| Ending balance |
5,121
|
5,196
|
5,121
|
5,196
|
| Total PPG Shareholders' Equity [Member] |
|
|
|
|
| Increase (Decrease) in Stockholders' Equity [Roll Forward] |
|
|
|
|
| Beginning balance |
|
|
4,983
|
5,180
|
| Net income |
|
|
533
|
1,092
|
| Other comprehensive income, net of tax |
|
|
161
|
(476)
|
| Cash dividends |
|
|
(309)
|
(287)
|
| Issuance of treasury stock |
|
|
51
|
69
|
| Purchase of treasury stock |
|
|
(400)
|
(501)
|
| Stock-based compensation activity |
|
|
12
|
34
|
| Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders |
|
|
0
|
0
|
| Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests |
|
|
0
|
0
|
| Ending balance |
5,031
|
5,111
|
5,031
|
5,111
|
| Non-controlling Interests [Member] |
|
|
|
|
| Increase (Decrease) in Stockholders' Equity [Roll Forward] |
|
|
|
|
| Beginning balance |
|
|
86
|
85
|
| Net income |
|
|
18
|
17
|
| Other comprehensive income, net of tax |
|
|
(1)
|
(8)
|
| Cash dividends |
|
|
0
|
0
|
| Issuance of treasury stock |
|
|
0
|
0
|
| Purchase of treasury stock |
|
|
0
|
0
|
| Stock-based compensation activity |
|
|
0
|
0
|
| Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders |
|
|
(4)
|
(3)
|
| Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests |
|
|
(9)
|
(6)
|
| Ending balance |
$ 90
|
$ 85
|
$ 90
|
$ 85
|