Compensation and Retirement Disclosure [Abstract] | Period [Axis] |
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2016-01-01 - 2016-12-31 |
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Compensation and Retirement Disclosure [Abstract] | |
Summary of Changes in Benefit Obligations | | | | | | | | | | | | | | | | | | | | | Pension Plans | | OPEB Plans | (In millions) | 2016 | | | 2015 | | | | 2016 | | | 2015 | | | Change in benefit obligations: | | | | | | | | | | | | | | Benefit obligations as of beginning of year | $ | 5,068 |
| | $ | 6,229 |
| | | $ | 174 |
| | $ | 210 |
| | Service cost | | 20 |
| | | 23 |
| | | | 1 |
| | | 1 |
| | Interest cost | | 215 |
| | | 225 |
| | | | 7 |
| | | 8 |
| | Actuarial loss (gain) | | 169 |
| | | (140 | ) | | | | — |
| | | (11 | ) | | Participant contributions | | 8 |
| | | 7 |
| | | | 2 |
| | | 2 |
| | Plan amendment | | 1 |
| | | — |
| | | | — |
| | | — |
| | Settlements | | (28 | ) | | | (65 | ) | | | | — |
| | | — |
| | Benefits paid | | (380 | ) | | | (410 | ) | | | | (15 | ) | | | (15 | ) | | Effect of foreign currency exchange rate changes | | 123 |
| | | (801 | ) | | | | 3 |
| | | (21 | ) | | Benefit obligations as of end of year | | 5,196 |
| | | 5,068 |
| | | | 172 |
| | | 174 |
| |
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Summary of Change in Plan Assets | | | | | | | | | | | | | | | | | | | | Change in plan assets: | | | | | | | | | | | | | | Fair value of plan assets as of beginning of year | | 4,049 |
| | | 4,808 |
| | | | — |
| | | — |
| | Actual return on plan assets | | 184 |
| | | 224 |
| | | | — |
| | | — |
| | Employer contributions | | 141 |
| | | 123 |
| | | | 13 |
| | | 13 |
| | Participant contributions | | 8 |
| | | 7 |
| | | | 2 |
| | | 2 |
| | Settlements | | (28 | ) | | | (65 | ) | | | | — |
| | | — |
| | Benefits paid | | (380 | ) | | | (410 | ) | | | | (15 | ) | | | (15 | ) | | Effect of foreign currency exchange rate changes | | 99 |
| | | (638 | ) | | | | — |
| | | — |
| | Fair value of plan assets as of end of year | | 4,073 |
| | | 4,049 |
| | | | — |
| | | — |
| | Funded status as of end of year | $ | (1,123 | ) | | $ | (1,019 | ) | | | $ | (172 | ) | | $ | (174 | ) | |
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Summary of Amounts Recognized in Consolidated Balance Sheets | | | | | | | | | | | | | | | | | | | | Amounts recognized in our Consolidated Balance Sheets consisted of: | | | | | | | | | | | | | | Other assets | $ | 3 |
| | $ | 10 |
| | | $ | — |
| | $ | — |
| | Accounts payable and accrued liabilities | | (3 | ) | | | (3 | ) | | | | (14 | ) | | | (14 | ) | | Pension and OPEB obligations | | (1,123 | ) | | | (1,026 | ) | | | | (158 | ) | | | (160 | ) | | Net obligations recognized | $ | (1,123 | ) | | $ | (1,019 | ) | | | $ | (172 | ) | | $ | (174 | ) | |
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Components of Net Periodic Benefit Cost Relating to Pension and OPEB Plans | The components of net periodic benefit cost relating to our pension and OPEB plans for the years ended December 31, 2016, 2015 and 2014, were as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pension Plans | | OPEB Plans | (In millions) | 2016 | | | 2015 | | | 2014 | | | | 2016 | | | 2015 | | | 2014 | | | Service cost | $ | 20 |
| | $ | 23 |
| | $ | 26 |
| | | $ | 1 |
| | $ | 1 |
| | $ | 1 |
| | Interest cost | | 215 |
| | | 225 |
| | | 274 |
| | | | 7 |
| | | 8 |
| | | 11 |
| | Expected return on plan assets | | (247 | ) | | | (260 | ) | | | (300 | ) | | | | — |
| | | — |
| | | — |
| | Amortization of prior service credits | | (1 | ) | | | (2 | ) | | | (2 | ) | | | | (15 | ) | | | (14 | ) | | | (11 | ) | | Amortization of actuarial losses (gains) | | 54 |
| | | 84 |
| | | 9 |
| | | | (5 | ) | | | (5 | ) | | | (4 | ) | | Net periodic benefit cost before special events | | 41 |
| | | 70 |
| | | 7 |
| | | | (12 | ) | | | (10 | ) | | | (3 | ) | | Curtailments and settlements | | — |
| | | 14 |
| | | 4 |
| | | | — |
| | | — |
| | | — |
| | | $ | 41 |
| | $ | 84 |
| | $ | 11 |
| | | $ | (12 | ) | | $ | (10 | ) | | $ | (3 | ) | |
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Weighted-Average Assumptions Used to Determine Projected Benefit Obligations and Net Periodic Benefit Cost | The weighted-average assumptions used to determine the benefit obligations at the measurement dates and the net periodic benefit cost for the years ended December 31, 2016, 2015 and 2014, were as follows: | | | | | | | | | | | | | | | | | | | | Pension Plans | | OPEB Plans | | 2016 |
| | 2015 |
| | 2014 |
| | 2016 |
| | 2015 |
| | 2014 |
| Benefit obligations: | | | | | | | | | | | | Discount rate | 3.8 | % | | 4.2 | % | | 4.0 | % | | 3.9 | % | | 4.4 | % | | 4.0 | % | Rate of compensation increase | 2.5 | % | | 2.5 | % | | 2.5 | % | |
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| Net periodic benefit cost: | | | | | | | | | | | | Discount rate | 4.2 | % | | 4.0 | % | | 4.9 | % | | 4.4 | % | | 4.1 | % | | 5.0 | % | Expected return on assets | 6.2 | % | | 6.3 | % | | 6.5 | % | |
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| Rate of compensation increase | 2.5 | % | | 2.5 | % | | 2.5 | % | |
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Assumed Health Care Cost Trend Rates Used to Determine Benefit Obligations | The assumed health care cost trend rates used to determine the benefit obligations for our domestic and foreign OPEB plans as of December 31, 2016 and 2015, were as follows: | | | | | | | | | | | | | | | | 2016 | | 2015 | | Domestic Plans | Foreign Plans | | Domestic Plans | Foreign Plans | Health care cost trend rate assumed for next year | 7.0 | % | | 4.2 | % | | | 7.2 | % | | 4.4 | % | | Rate to which the cost trend rate is assumed to decline (ultimate trend rate) | 4.5 | % | | 4.0 | % | | | 4.5 | % | | 3.8 | % | | Year that the rate reaches the ultimate trend rate | 2028 |
| | 2028 |
| | | 2028 |
| | 2033 |
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Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rate | Variations of the health care cost trend rate can have a significant effect on the amounts reported. A 1% change in this assumption would have had the following impact on our 2016 OPEB obligation and costs for our domestic and foreign plans: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1% Increase | | 1% Decrease | (In millions, except percentages) | Domestic Plans | Foreign Plans | | Domestic Plans | Foreign Plans | OPEB obligation | $ | 4 |
| | 6 | % | | $ | 5 |
| | 4 | % | | | $ | (3 | ) | | (5 | )% | | $ | (4 | ) | | (4 | )% | | Service and interest costs | $ | — |
| | 6 | % | | $ | — |
| | 6 | % | | | $ | — |
| | (5 | )% | | $ | — |
| | (5 | )% | |
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Fair Value of Plan Assets Held by Pension Plans | The fair value of plan assets held by our pension plans as of December 31, 2016, was as follows: | | | | | | | | | | | | | | (In millions) | Total | | | Level 1 | | | Level 2 | | | Equity securities: | | | | | | | | | | U.S. companies | $ | 865 |
| | $ | 865 |
| | $ | — |
| | Non-U.S. companies | | 889 |
| | | 889 |
| | | — |
| | Debt securities: | | | | | | | | | | Corporate and government securities | | 1,281 |
| | | 163 |
| | | 1,118 |
| | Asset-backed securities | | 71 |
| | | — |
| | | 71 |
| | Cash and cash equivalents | | 320 |
| | | 320 |
| | | — |
| | Accrued interest and dividends | | 45 |
| | | — |
| | | 45 |
| | Total before investments measured at NAV | $ | 3,471 |
| | $ | 2,237 |
| | $ | 1,234 |
| | Investments measured at NAV | | 602 |
| | | | | | | | | $ | 4,073 |
| | | | | | | |
The fair value of plan assets held by our pension plans as of December 31, 2015, was as follows: | | | | | | | | | | | | | | (In millions) | Total | | | Level 1 | | | Level 2 | | | Equity securities: | | | | | | | | | | U.S. companies | $ | 587 |
| | $ | 587 |
| | $ | — |
| | Non-U.S. companies | | 626 |
| | | 626 |
| | | — |
| | Debt securities: | | | | | | | | | | Corporate and government securities | | 2,243 |
| | | 274 |
| | | 1,969 |
| | Asset-backed securities | | 97 |
| | | — |
| | | 97 |
| | Cash and cash equivalents | | 191 |
| | | 191 |
| | | — |
| | Accrued interest and dividends | | 36 |
| | | — |
| | | 36 |
| | Total before investments measured at NAV | $ | 3,780 |
| | $ | 1,678 |
| | $ | 2,102 |
| | Investments measured at NAV | | 269 |
| | | | | | | | | $ | 4,049 |
| | | | | | | |
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Expected Benefit Payments and Future Contributions | As of December 31, 2016, benefit payments expected to be paid over the next 10 years are as follows: | | | | | | | | | | (In millions) | Pension Plans (1) | OPEB Plans | 2017 | $ | 355 |
| | $ | 14 |
| | 2018 | | 352 |
| | | 14 |
| | 2019 | | 350 |
| | | 14 |
| | 2020 | | 346 |
| | | 13 |
| | 2021 | | 342 |
| | | 13 |
| | 2022 - 2026 | | 1,637 |
| | | 60 |
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| | (1) | Benefit payments are expected be paid from the plans’ net assets. |
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