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COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS - Additional Information (Detail) Employee in Thousands, $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2016 USD ($) Employee | Dec. 31, 2016 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2007 USD ($)
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Target Award Maximum, Percentage |  |  |  | 200.00% |  |  |
Number of covered persons | Employee |  | 22 |  |  |  |  |
Pension and postretirement benefit expense |  |  | $ 4 | $ 3,725 | $ 1,189 | $ 3,040 |
Health care cost trends, initial annual rate increase |  |  |  | 7.00% |  |  |
Health care cost trends, an ultimate trend rate |  |  |  | 4.50% |  |  |
Expected year when ultimate trend rate to be reached |  | 2021 | 2021 | 2021 |  |  |
Accumulated benefit obligation for pension plans |  | $ 39,488 | $ 39,488 | $ 39,488 | 35,320 |  |
Employer contributions |  | 685 |  | 2,668 | 1,229 | 1,258 |
Fair value of plan assets |  | 0 | 0 | $ 0 | $ 55 |  |
Plan assets target allocation |  |  |  | 100.00% | 100.00% |  |
U.S. Postretirement Medical Benefits |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Defined Benefit Pension Plan, Liabilities |  | 2,499 | 2,499 | $ 2,499 | $ 2,445 |  |
Fair value of plan assets |  | 15 | 15 | 15 | 130 | 259 |
Pension Benefits |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Employer contributions |  |  |  |  | 22 |  |
Postretirement Medical Benefits |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Employer contributions |  |  |  | 98 | 111 |  |
International Pension Benefits |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Defined Benefit Pension Plan, Liabilities |  | 358 | 358 | 358 | 250 |  |
Fair value of plan assets |  | 1,092 | 1,092 | 1,092 | 1,014 | 1,042 |
Domestic |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Fair value of plan assets |  | 0 | 0 | $ 0 | $ 6 |  |
Domestic | Cash and Cash Equivalents [Member] |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations |  |  |  | 0.00% | 0.00% |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum |  |  |  | 5.00% | 5.00% |  |
Fair value of plan assets |  | 0 | 0 | $ 0 | $ 0 |  |
International [Member] |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Fair value of plan assets |  | 0 | 0 | $ 0 | $ 49 |  |
International [Member] | Cash and Cash Equivalents [Member] |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations |  |  |  | 0.00% | 0.00% |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum |  |  |  | 5.00% | 5.00% |  |
Fair value of plan assets |  | 0 | 0 | $ 0 | $ 0 |  |
Fixed Income Securities [Member] | Domestic |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations |  |  |  | 25.00% | 15.00% |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum |  |  |  | 35.00% | 35.00% |  |
Fair value of plan assets |  | 0 | 0 | $ 0 | $ 6 |  |
Fixed Income Securities [Member] | International [Member] |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations |  |  |  | 15.00% | 15.00% |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum |  |  |  | 35.00% | 35.00% |  |
Fair value of plan assets |  | 0 | 0 | $ 0 | $ 0 |  |
Equity securities | Domestic |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations |  |  |  | 35.00% | 25.00% |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum |  |  |  | 55.00% | 55.00% |  |
Fair value of plan assets |  | 0 | 0 | $ 0 | $ 0 |  |
Equity securities | International [Member] |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations |  |  |  | 50.00% | 50.00% |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum |  |  |  | 65.00% | 65.00% |  |
Fair value of plan assets |  | 0 | 0 | $ 0 | $ 0 |  |
Other Investments [Member] | Private Equity and Real Estate |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Unfunded commitments to limited partnerships |  | 1,908 | 1,908 | 1,908 |  |  |
Other Investments [Member] | Hedge Funds |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Unfunded commitments to limited partnerships |  | 5 | 5 | $ 5 |  |  |
Other Investments [Member] | Domestic | Hedge Funds |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations |  |  |  | 5.00% | 8.00% |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum |  |  |  | 15.00% | 15.00% |  |
Fair value of plan assets |  | 0 | 0 | $ 0 | $ 0 |  |
Other Investments [Member] | Domestic | Other |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations | [1] |  |  | 1.00% | 1.00% |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | [1] |  |  | 10.00% | 10.00% |  |
Other Investments [Member] | Domestic | Structured Products |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations |  |  |  | 1.00% | 3.00% |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum |  |  |  | 10.00% | 10.00% |  |
Fair value of plan assets |  | 0 | 0 | $ 0 | $ 0 |  |
Other Investments [Member] | Domestic | Structured Products [Member] |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations | [2] |  |  | 0.00% | 0.00% |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | [2] |  |  | 5.00% | 5.00% |  |
Fair value of plan assets | [2] | 0 | 0 | $ 0 |  |  |
Other Investments [Member] | International [Member] | Other |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Fair value of plan assets | [1] | 0 | 0 | $ 0 | $ 49 |  |
Other Investments [Member] | International [Member] | Structured Products |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations |  |  |  | 0.00% | 0.00% |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum |  |  |  | 17.00% | 17.00% |  |
Fair value of plan assets |  | $ 0 | $ 0 | $ 0 | $ 0 |  |
Other Investments [Member] | International [Member] | Structured Products [Member] |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Defined Benefit Plan, Actual Plan Asset Allocations | [2] |  |  | 0.00% | 0.00% |  |
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum | [2] |  |  | 10.00% | 10.00% |  |
Employee Defined Contribution Plans [Member] |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Contributions charged to expense |  |  |  | $ 111 | $ 104 | 95 |
Defined Contribution Money Purchase Plans [Member] |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Contributions charged to expense |  |  |  | $ 82 | $ 83 | $ 82 |
UPS/IBT Full-Time Employee Pension Plan [Member] |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Defined Benefit Pension Plan, Liabilities |  |  |  |  |  |  | $ 4,000
Discounted Employee Stock Purchase Modified Plan [Member] |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award Exercisable Price Percentage Of Closing Price Of Another Class Of Stock |  | 95.00% | 95.00% | 95.00% |  |  |
Central States, South East & South West Areas Health and Welfare Fund |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Multiemployer Plans, Withdrawal Obligation |  |  |  |  |  |  | $ 6,100
Minimum |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Defined contribution plan, employer contribution (percentage) |  |  |  | 3.00% |  |  |
Minimum | U.S. Postretirement Medical Benefits |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Postretirement medical plans service minimum eligibility year |  |  |  | 10 years |  |  |
Postretirement medical plans service minimum eligibility age |  |  |  | 55 years |  |  |
Minimum | Other Investments [Member] | Private Equity and Real Estate |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Redemption notice period, lower limit |  |  |  | 10 years |  |  |
Maximum |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Defined contribution plan, employer contribution (percentage) |  |  |  | 8.00% |  |  |
Maximum | Other Investments [Member] | Private Equity and Real Estate |  |  |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |  |  |
Redemption notice period, upper limit |  |  |  | 15 years |  |  |
[1] | (
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- Definition This represents the entire liability recognized in the balance sheet that is associated with the defined benefit pension plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2410-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.15) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2417-114920 + Details
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- Definition For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Accumulated Benefit Obligation -URI http://asc.fasb.org/extlink&oid=6503844 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition The assumed health care cost trend rate for the next year used to measure the expected cost of benefits covered by the plan (gross eligible charges). This is based upon the annual rate of change in the cost of health care benefits currently provided by the postretirement benefit plan, due to factors other than changes in the composition of the plan population by age and dependency status. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Health Care Cost Trend Rate -URI http://asc.fasb.org/extlink&oid=6514820 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (l) -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920 + Details
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- Definition The amount of the cost recognized during the period for defined contribution plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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- Definition Amount of the obligation recognized by withdrawing from a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References No definition available. + Details
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- Definition The amount of cash or cash equivalents contributed during the reporting period by the entity to fund its pension plans and its non-pension postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585 + Details
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- Definition The amount of pension and other (such as medical, dental and life insurance) postretirement benefit costs recognized during the period for (1) defined benefit plans (periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss) on assets, prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments) and for (2) defined contribution plans (to the extent that a plan's defined contributions to an individual's account are to be made for periods in which that individual renders services, the net cost for a period is the contribution called for in that period; if a plan calls for contributions for periods after an individual retires or terminates, the estimated cost is accrued during the employee's service period). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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