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Employee Benefit Plans (Tables) | 6 Months Ended
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Jun. 30, 2020
Pension Plan [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Schedule of Defined Benefit Plans Disclosures [Table Text Block] | Components of net periodic benefit cost (income) of the pension plans for the three months ended June 30 were as follows:
In millions | U.S. Pension Benefits |  |  |  | International Pension Benefits |  |  |  | Total Pension Benefits |  |
| 2020 |  | 2019 |  | 2020 |  | 2019 |  | 2020 |  | 2019
Net service cost | $ | — |  |  | $ | — |  |  | $ | 2 |  |  | $ | 1 |  |  | $ | 2 |  |  | $ | 1 |
Interest cost | 13 |  |  | 17 |  |  | 2 |  |  | 5 |  | 15 |  |  | 22 |
Expected return on plan assets | (9) |  |  | (12) |  |  | (6) |  |  | (7) |  |  | (15) |  |  | (19) |
Net periodic benefit cost (income) | $ | 4 |  |  | $ | 5 |  |  | $ | (2) |  |  | $ | (1) |  |  | $ | 2 |  |  | $ | 4 |
Components of net periodic benefit cost (income) of the pension plans for the six months ended June 30 were as follows:
In millions | U.S. Pension Benefits |  |  |  | International Pension Benefits |  |  |  | Total Pension Benefits |  |
| 2020 |  | 2019 |  | 2020 |  | 2019 |  | 2020 |  | 2019
Net service cost | $ | — |  |  | $ | — |  |  | $ | 3 |  |  | $ | 3 |  |  | $ | 3 |  |  | $ | 3 |
Interest cost | 26 |  |  | $ | 33 |  |  | 6 |  |  | $ | 10 |  |  | 32 |  |  | $ | 43 |
Expected return on plan assets | (18) |  |  | $ | (22) |  |  | (13) |  |  | $ | (15) |  |  | (31) |  |  | $ | (37) |
Net periodic benefit cost (income) | $ | 8 |  |  | $ | 11 |  |  | $ | (4) |  |  | $ | (2) |  |  | $ | 4 |  |  | $ | 9 |
Postretirement Plan |
Defined Benefit Plan Disclosure [Line Items] |
Schedule of Defined Benefit Plans Disclosures [Table Text Block] | The benefit from the postretirement plan for the following periods were:
In millions | Three months ended June 30 |  |  |  | Six months ended June 30 |  |
| 2020 |  | 2019 |  | 2020 |  | 2019
Interest cost | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Amortization of: |  |  |  |  |  |  |
Prior service benefit | — |  |  | (1) |  |  | (1) |  |  | $ | (2) |
Net postretirement benefit | $ | — |  |  | $ | (1) |  |  | $ | (1) |  |  | $ | (2) |
Postemployment Retirement Benefits |
Defined Benefit Plan Disclosure [Line Items] |
Schedule of Defined Benefit Plans Disclosures [Table Text Block] | The net cost of the postemployment plan for the following periods were:
| Three months ended June 30 |  |  |  | Six months ended June 30 |  |
In millions | 2020 |  | 2019 |  | 2020 |  | 2019
Net service cost | $ | 7 |  |  | $ | 5 |  |  | $ | 13 |  |  | $ | 19 |
Interest cost | 1 |  |  | 1 |  |  | 1 |  |  | 2 |
Amortization of: |  |  |  |  |  |  |
Prior service benefit | (1) |  |  | (1) |  |  | (1) |  |  | (2) |
Actuarial gain | (1) |  |  | — |  |  | (2) |  |  | (1) |
Net benefit cost | $ | 6 |  |  | $ | 5 |  |  | $ | 11 |  |  | $ | 18 |

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