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Employee Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2018
Retirement Benefits [Abstract] |
Pension and Postemployment Benefit Costs | Pension and postemployment benefit costs for the years ended December 31 were as follows:
| 2018 |  | 2017 |  | 2016
In millions | Pension |  | Postemployment |  | Pension |  | Postemployment |  | Pension |  | Postemployment
Service cost | $ | 8 |  |  | $ | 8 |  |  | $ | 9 |  |  | $ | 7 |  |  | $ | 8 |  |  | $ | 6 |
Interest cost | 3 |  |  | 1 |  |  | 3 |  |  | 1 |  |  | 3 |  |  | 1 |
Expected return on plan assets | (2 | ) |  | — |  |  | (2 | ) |  | — |  |  | (2 | ) |  | — |
Settlement charge | — |  |  | — |  |  | — |  |  | — |  |  | 1 |  |  | — |
Curtailment charge | (1 | ) |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Amortization of actuarial loss | 1 |  |  | 4 |  |  | 1 |  |  | 2 |  |  | 1 |  |  | 1 |
Amortization of prior service (credit) cost | — |  |  | — |  |  | (1 | ) |  | 1 |  |  | — |  |  | 2 |
Divestiture | — |  |  | — |  |  | — |  |  | — |  |  | (2 | ) |  | (1 | )
Total costs | $ | 9 |  |  | $ | 13 |  |  | $ | 10 |  |  | $ | 11 |  |  | $ | 9 |  |  | $ | 9 |
Accumulated Pension Benefit Obligation | The following tables present the changes in benefit obligations, plan assets, funded status and the reconciliation of the funded status to amounts recognized in the consolidated balance sheets and in accumulated other comprehensive income at December 31:
| Pension |  | Postemployment
In millions | 2018 |  | 2017 |  | 2018 |  | 2017
Change in benefit obligation |  |  |  |  |  |  |
Benefit obligation at January 1 | $ | 136 |  |  | $ | 120 |  |  | $ | 47 |  |  | $ | 42 |
Service cost | 8 |  |  | 9 |  |  | 8 |  |  | 7 |
Interest cost | 3 |  |  | 3 |  |  | 1 |  |  | 1 |
Plan participant contributions | 1 |  |  | 1 |  |  | — |  |  | — |
Actuarial (gain) loss | (5 | ) |  | (3 | ) |  | 12 |  |  | 12 |
Benefits paid | (2 | ) |  | (4 | ) |  | (14 | ) |  | (15 | )
Curtailment | (1 | ) |  | — |  |  | — |  |  | — |
Settlement | (4 | ) |  | — |  |  | — |  |  | — |
Currency translation adjustments | (4 | ) |  | 10 |  |  | — |  |  | — |
Benefit obligation at December 31 | $ | 132 |  |  | $ | 136 |  |  | $ | 54 |  |  | $ | 47 |
Change in plan assets |  |  |  |  |  |  |
Fair value of plan assets at January 1 | $ | 75 |  |  | $ | 64 |  |  | $ | — |  |  | $ | — |
Actual return on plan assets | (2 | ) |  | 5 |  |  | — |  |  | — |
Company contributions | 5 |  |  | 5 |  |  | — |  |  | — |
Benefits paid | (2 | ) |  | (4 | ) |  | — |  |  | — |
Currency translation adjustments | (1 | ) |  | 4 |  |  | — |  |  | — |
Plan participant contribution | 1 |  |  | 1 |  |  | — |  |  | — |
Settlements | (4 | ) |  | — |  |  | — |  |  | — |
Other | (4 | ) |  | — |  |  | — |  |  | — |
Fair value of plan assets at December 31 | 68 |  |  | 75 |  |  | — |  |  | — |
Funded status (underfunded) | $ | (64 | ) |  | $ | (61 | ) |  | $ | (54 | ) |  | $ | (47 | )
Amounts Recognized in the Consolidated Balance Sheet |  |  |  |  |  |  |
Non-current assets | $ | 5 |  |  | $ | 10 |  |  | $ | — |  |  | $ | — |
Current liabilities | (1 | ) |  | (2 | ) |  | (9 | ) |  | (7 | )
Non-current liabilities | (68 | ) |  | (69 | ) |  | (45 | ) |  | (40 | )
Net amounts recognized | $ | (64 | ) |  | $ | (61 | ) |  | $ | (54 | ) |  | $ | (47 | )
Amounts Recognized in Accumulated Other Comprehensive Income (Loss) |  |  |  |  |  |  |
Unrecognized Net actuarial loss | $ | 16 |  |  | $ | 15 |  |  | $ | 44 |  |  | $ | 37 |
Unrecognized Prior service (credit) cost | — |  |  | (1 | ) |  | 3 |  |  | 3 |
Total | $ | 16 |  |  | $ | 14 |  |  | $ | 47 |  |  | $ | 40 |
The following table presents pension plans with accumulated benefit obligations in excess of plan assets at December 31:
In millions | 2018 |  | 2017
Projected benefit obligation | $ | 68 |  |  | $ | 69 |
Accumulated benefit obligation | $ | 61 |  |  | $ | 63 |
Fair value of plan assets | $ | — |  |  | $ | — |
The following table presents the accumulated pension benefit obligation at December 31:
In millions | 2018 |  | 2017
Accumulated pension benefit obligation | $ | 122 |  |  | $ | 125 |
Pre-Tax Net Changes in Projected Benefit Obligations Recognized in Other Comprehensive Income | The following table presents the pre-tax net changes in projected benefit obligations recognized in other comprehensive income:
| Pension |  | Postemployment
In millions | 2018 |  | 2017 |  | 2018 |  | 2017
Actuarial (gain) loss arising during the year | $ | (2 | ) |  | $ | (7 | ) |  | $ | 12 |  |  | $ | 13 |
Amortization of loss included in net periodic benefit cost | (1 | ) |  | (1 | ) |  | (4 | ) |  | (2 | )
Prior service (credit) cost arising during the year | — |  |  | — |  |  | — |  |  | (1 | )
Recognition of gain due to curtailment | 1 |  |  | — |  |  | — |  |  | — |
Foreign currency exchange | (1 | ) |  | 2 |  |  | — |  |  | — |
Total recognized in other comprehensive (loss) income | $ | (3 | ) |  | $ | (6 | ) |  | $ | 8 |  |  | $ | 10 |
Amounts in Accumulated Other Comprehensive Income Expected to be Recognized as Components of Net Periodic Benefit Cost | The following table presents the amounts in accumulated other comprehensive income expected to be recognized as components of net periodic benefit cost during 2019:
In millions | Pension |  | Postemployment
Net loss to be recognized in other comprehensive income | $ | 1 |  |  | $ | 5 |
Weighted-Average Rates and Assumptions Used to Determine Benefit Obligations and Net Periodic Benefit | The weighted-average rates and assumptions used to determine benefit obligations at December 31, and net periodic benefit cost for the years ended December 31, were as follows:
| Pension Benefit Obligations |  | Pension Benefit Cost
| 2018 |  | 2017 |  | 2018 |  | 2017 |  | 2016
Discount rate | 2.2% |  | 2.1% |  | 2.1% |  | 2.0% |  | 2.4%
Rate of compensation increase | 3.4% |  | 3.3% |  | 3.3% |  | 3.3% |  | 3.2%
Expected return on plan assets | N/A |  | N/A |  | 2.8% |  | 2.9% |  | 3.0%
| Postemployment Benefit Obligations |  | Postemployment Benefit Cost
| 2018 |  | 2017 |  | 2018 |  | 2017 |  | 2016
Discount rate | 2.5% |  | 2.6% |  | 2.5% |  | 2.6% |  | 3.4%
Rate of compensation increase | 3.0% |  | 3.0% |  | 3.0% |  | 3.0% |  | 3.0%
Involuntary turnover rate | 2.5% |  | 2.3% |  | 2.5% |  | 2.3% |  | 2.0%
Weighted-Average Asset Allocations, by Category | The weighted-average asset allocations at December 31, by asset category are as follows:
| Actual Asset Allocation as of December 31 |  | Target Asset
| 2018 |  | 2017 |  | Allocation
Equity securities | 32% |  | 32% |  | 32%
Debt securities | 51% |  | 41% |  | 50%
Insurance (annuity) contracts | 12% |  | 17% |  | 12%
Real-estate | 3% |  | 8% |  | 3%
Other | 2% |  | 2% |  | 3%
Total | 100% |  | 100% |  | 100%
Pension Plan Assets at Fair Value | The following table sets forth by level, within the fair value hierarchy, the pension plan assets at fair value as of December 31, 2017:
|  |  | Fair Value Measurements at Reporting Date Using
|  |  | Quoted Prices in Active Markets for Identical Assets |  | Significant Other Observable Inputs |  | Significant Unobservable Inputs
In millions | December 31, 2017 |  | (Level 1) |  | (Level 2) |  | (Level 3)
Money market funds | $ | 2 |  |  | $ | — |  |  | $ | 2 |  |  | $ | — |
Equity funds | 24 |  |  | — |  |  | 24 |  |  | — |
Bond/fixed-income funds | 31 |  |  | — |  |  | 31 |  |  | — |
Real-estate indirect investments | 6 |  |  | — |  |  | 6 |  |  | — |
Insurance contracts | 12 |  |  | — |  |  | — |  |  | 12 |
Total assets at fair value | $ | 75 |  |  | $ | — |  |  | $ | 63 |  |  | $ | 12 |
The following table sets forth by level, within the fair value hierarchy, the pension plan assets at fair value as of December 31, 2018:
|  |  | Fair Value Measurements at Reporting Date Using
|  |  | Quoted Prices in Active Markets for Identical Assets |  | Significant Other Observable Inputs |  | Significant Unobservable Inputs
In millions | December 31, 2018 |  | (Level 1) |  | (Level 2) |  | (Level 3)
Money market funds | $ | 1 |  |  | $ | — |  |  | $ | 1 |  |  | $ | — |
Equity funds | 22 |  |  | — |  |  | 22 |  |  | — |
Bond/fixed-income funds | 35 |  |  | — |  |  | 35 |  |  | — |
Real-estate indirect investments | 2 |  |  | — |  |  | 2 |  |  | — |
Insurance contracts | 8 |  |  | — |  |  | — |  |  | 8 |
Total assets at fair value | $ | 68 |  |  | $ | — |  |  | $ | 60 |  |  | $ | 8 |
Changes in Fair Value of the Pension Plan Level 3 Assets | The table below sets forth a summary of changes in the fair value of the pension plan level 3 assets for the year ended December 31, 2018:
In millions | Insurance Contracts
Balance as of January 1, 2018 | $ | 12 |
Purchases, sales and settlements, net | (4 | )
Balance as of December 31, 2018 | $ | 8 |
The table below sets forth a summary of changes in the fair value of the pension plan level 3 assets for the year ended December 31, 2017:
In millions | Insurance Contracts
Balance as of January 1, 2017 | $ | 11 |
Purchases, sales and settlements, net | 1 |
December 31, 2017 | $ | 12 |
Estimated Future Benefit Payments | The Company expects to make the following benefit payments, estimated based on the assumptions used to measure the company's benefit obligation at the end of the year, reflecting past and future service from its pension and postemployment plans:
| Pension |  | Postemployment
In millions | Benefits |  | Benefits
Year |  |  |
2019 | $ | 3 |  |  | $ | 9 |
2020 | $ | 4 |  |  | $ | 9 |
2021 | $ | 5 |  |  | $ | 9 |
2022 | $ | 5 |  |  | $ | 9 |
2023 | $ | 5 |  |  | $ | 9 |
2024 - 2028 | $ | 31 |  |  | $ | 44 |
U.S and International Subsidiary Savings Plans | The following table identifies the expense for the United States and International subsidiary savings plans for the years ended December 31:
In millions | 2018 |  | 2017 |  | 2016
U.S. savings plan | $ | 22 |  |  | $ | 21 |  |  | $ | 19 |
International subsidiary savings plans | $ | 17 |  |  | $ | 17 |  |  | $ | 16 |

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