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Commitments and Contingent Liabilities (Tables) | 9 Months Ended
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Sep. 30, 2020
Commitments and Contingencies Disclosure [Abstract] |
Environmental Liabilities [Table Text Block] |
Environmental Reserves |  |  |
($ in millions) | September 30, 2020 |  | December 31, 2019
New Jersey Chrome | $99 |  |  | $134 |
Glass and chemical | 99 |  |  | 96 |
Other | 91 |  |  | 74 |
Total | $289 |  |  | $304 |
Current portion | $81 |  |  | $62 |
Environmental Costs [Table Text Block] | Pretax charges against income for environmental remediation costs are included in Other charges in the accompanying condensed consolidated statement of income. The pretax charges and cash outlays related to such environmental remediation for the three and nine months ended September 30, 2020 and 2019 were as follows:
| Three Months Ended September 30 |  |  |  | Nine Months Ended September 30 |  |
($ in millions) | 2020 |  | 2019 |  | 2020 |  | 2019
Environmental remediation pretax charges | $6 |  |  | $24 |  |  | $21 |  |  | $75 |
Cash outlays for environmental remediation activities | $15 |  |  | $21 |  |  | $52 |  |  | $57 |

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