Define benefit plan former employees elected to receive lump-sum distributions.

No definition available.

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- Definition

The actual rate of return on plan assets for the 15-year period reflecting the average rate of earnings on the funds invested to provide for the benefits included in the benefit obligation.

+ References

No definition available.

+ Details

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- Definition

Defined benefit plan responsibility transferred to number of retirees and beneficiaries.

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No definition available.

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- Definition

Defined benefit plan settlement loss.

+ References

No definition available.

+ Details

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- Definition

Number of former employees elected to receive lump sum distribution.

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No definition available.

+ Details

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- Definition

U.S. pension plan actual rate of return on assets.

+ References

No definition available.

+ Details

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- Definition

The weighted average interest rate used to adjust for the time value of money for all pension and postretirement plans.

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No definition available.

+ Details

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- Definition

Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan.

+ References

+ Details

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- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(5)(ii)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2709-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(5)(iv)(01)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

+ Details

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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.

+ References

No definition available.

+ Details

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- Definition

Assumed rate, for next fiscal year, based on annual change in cost of health care cost benefits used to measure expected cost of benefits covered by defined benefit postretirement plan. Factors include, but are not limited to, estimate of health care inflation, change in health care utilization or delivery pattern, technological advances, and change in health status of participant. Excludes factors for change in composition of plan population by age and dependency status.

+ References

+ Details

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Period Type:	instant

- Definition

Amount of (increase) decrease to benefit obligation of defined benefit plan from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Includes, but is not limited to, lump-sum cash payment to participant in exchange for right to receive specified benefits, purchase of nonparticipating annuity contract and change from remeasurement.

+ References

+ Details

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Period Type:	duration

- Definition

Ultimate trend rate for health care cost for defined benefit postretirement plan.

+ References

+ Details

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- Definition

Year ultimate health care cost trend rate is expected to be reached, in CCYY format.

+ References

+ Details

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- Details

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- Details

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- Details

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- Details

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Retirement Plans - Additional Information (Details)	1 Months Ended			3 Months Ended	12 Months Ended
Retirement Plans - Additional Information (Details)	May 31, 2018 USD ($) RetireeandBeneficiary	Feb. 28, 2018 USD ($)	May 31, 2017 USD ($) Employee	Feb. 28, 2018 USD ($)	May 31, 2019 USD ($)	May 31, 2018 USD ($)	May 31, 2017 USD ($)	May 31, 2016	May 31, 2015
Defined Benefit Plan Disclosure [Line Items]
U.S. pension plan actual rate of return on assets						6.30%	9.20%	0.90%
Weighted average discount rate percent all pension postretirement plans						4.11%	3.98%	4.04%	4.38%
Actual rate of return on plan assets for the 15-year period						8.20%
Defined benefit plan health care cost trend rate assumed for next fiscal year	6.30%					6.30%
Defined benefit plan ultimate health care cost trend rate	4.50%					4.50%
Defined benefit plan year that rate reaches ultimate trend rate						2037
Metropolitan Life Insurance Company
Defined Benefit Plan Disclosure [Line Items]
One-time settlement loss	$ 210,000,000
U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Contributions By Employer		$ 1,500,000,000		$ 1,500,000,000		$ 2,500,000,000	$ 2,000,000,000
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on assets						6.50%	6.50%	6.50%
Pension Plans [Member] \| Scenario Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on assets					6.75%
Pension Plans [Member] \| U.S. Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected long-term rate of return on assets						6.50%	6.50%	6.50%
Number of former employees elected to receive lump sum distribution \| Employee			18,300
Lump sum amount paid to former employees			$ 1,300,000,000
Group annuity contract and transfer						$ 6,178,000,000
Defined Benefit Plan Contributions By Employer						$ 2,547,000,000	$ 2,020,000,000
Pension Plans [Member] \| U.S. Plans [Member] \| Scenario Forecast [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan Contributions By Employer					$ 0
Pension Plans [Member] \| U.S. Plans [Member] \| Metropolitan Life Insurance Company
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan responsibility transferred to number of retirees and beneficiaries \| RetireeandBeneficiary	41,000
Group annuity contract and transfer	$ 6,000,000,000