Commitments and Contingent Liabilities (Impact of PPG Settlement Arrangement Including Change in Fair Value of Stock to be Transferred) (Details) - USD ($)
$ in Millions |
3 Months Ended |
6 Months Ended |
9 Months Ended |
|
|
Sep. 30, 2016 |
Sep. 30, 2015 |
Jun. 30, 2016 |
Sep. 30, 2016 |
Sep. 30, 2015 |
Jun. 09, 2016 |
Dec. 31, 2015 |
| Asbestos Litigation Reserve Noncurrent |
$ 0
|
|
$ 0
|
$ 0
|
|
|
$ 252
|
| Change in fair value of PPG Stock |
|
|
34
|
|
|
|
|
| Forward Contract Indexed To Issuers Equity Fair Value |
|
|
0
|
|
|
$ 258
|
(223)
|
| Asbestos Litigation Reserve Current |
0
|
|
0
|
0
|
|
|
$ 796
|
| Accretion Of Interest On Litigation Settlements |
|
|
6
|
|
|
|
|
| Settlement of equity forward instrument with counterparty |
|
|
(49)
|
|
|
|
|
| Equity Method Investments |
21
|
|
|
21
|
|
|
|
| Company Stock To Be Contributed To Asbestos Trust |
|
|
(308)
|
|
|
|
|
| Cash Contributed to the PC Trust |
|
|
(764)
|
|
|
|
|
| Reclassifications [Text Block] |
|
|
(1)
|
|
|
|
|
| Gain Loss Related To Asbestos Litigation Settlement |
$ 0
|
$ (3)
|
(5)
|
(5)
|
$ (9)
|
|
|
| Cash Paid for Asbestos Settlement Funding |
|
|
813
|
$ 813
|
$ 0
|
|
|
| Pittsburgh Corning Corporation [Member] |
|
|
|
|
|
|
|
| Equity Method Investments |
|
|
(15)
|
|
|
|
|
| Other Current Liabilities [Member] |
|
|
|
|
|
|
|
| Cash Contributed to the PC Trust |
|
|
(506)
|
|
|
|
|
| Other Noncurrent Liabilities [Member] |
|
|
|
|
|
|
|
| Cash Contributed to the PC Trust |
|
|
$ (258)
|
|
|
|
|
| Asbestos Issue [Member] |
|
|
|
|
|
|
|
| Forward Contract Indexed To Issuers Equity Fair Value |
|
|
|
|
|
$ (35)
|
|