Retirement-Related Benefits - Non-US and Multi-Employer Contributions (Details) - Pension Plans, Including Multi-employer Plans - Non-U.S. - USD ($) $ in Millions |
3 Months Ended | |
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Mar. 31, 2018 |
Mar. 31, 2017 |
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| RETIREMENT-RELATED BENEFITS | ||
| Expected current year contributions to non-U.S. defined benefit plans | $ 400 | |
| Contributions by employer to defined benefit plans | 191 | $ 182 |
| Contributions by employer - Cash | 44 | 40 |
| Contributions by employer - Noncash | $ 147 | $ 142 |
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- Definition Cash contributions made by the employer during the period to a defined benefit plan. No definition available.
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- Definition Noncash contributions made by the employer during the period to a defined benefit plan. These contributions may be in the form of securities. No definition available.
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- Definition Amount of contribution received by defined benefit plan from employer which increases plan assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Amount of contributions received and expected to be received by defined benefit plan from employer in current fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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