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Employee Stock and Savings Plans - Additional Information (Detail) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2018
Compensation Related Costs Disclosure [Line Items] |  |  |  |
Company contribution amount for each dollar a participant contributes into the savings plans | 50.00% |  |  |
Retirement benefits for saving plans funded by employer | $ 1,000 |  | $ 877 | $ 807
Upper Limit | IRS Compensation Limit |  |  |  |
Compensation Related Costs Disclosure [Line Items] |  |  |  |
Percentage of employee's earnings the company may contribute into the savings plans | 50.00% |  |  |
Stock Awards |  |  |  |
Compensation Related Costs Disclosure [Line Items] |  |  |  |
Shares authorized for future grant | 283 |  |  |
Unrecognized compensation costs | $ 10,200 |  |  |
Unrecognized compensation costs are expected to be recognized over a weighted average period (years) | 3 years |  |  |
Weighted average grant-date fair value | $ 140.49 | [1] | $ 107.02 | $ 75.88
Fair value of awards vested | $ 10,100 |  | $ 8,700 | $ 6,600
Stock Awards | Lower Limit |  |  |  |
Compensation Related Costs Disclosure [Line Items] |  |  |  |
Award vest period | 4 years |  |  |
Stock Awards | Upper Limit |  |  |  |
Compensation Related Costs Disclosure [Line Items] |  |  |  |
Award vest period | 5 years |  |  |
Restricted Stock Units | Executive Incentive Plan |  |  |  |
Compensation Related Costs Disclosure [Line Items] |  |  |  |
Award vest period | 4 years |  |  |
Performance Stock Units | Executive Incentive Plan |  |  |  |
Compensation Related Costs Disclosure [Line Items] |  |  |  |
Award vest period | 3 years |  |  |
Employee Stock |  |  |  |
Compensation Related Costs Disclosure [Line Items] |  |  |  |
Shares authorized for future grant | 96 |  |  |
Percentage of market value at which employees are able to purchase shares of common stock | 90.00% |  | 90.00% | 90.00%
Maximum percentage of gross compensation at which employees may purchase shares | 15.00% |  | 15.00% | 15.00%
[1] | Includes 2 million, 2 million, and 3 million of PSUs granted at target and performance adjustments above target levels for fiscal years 2020, 2019, and 2018, respectively.

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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -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 Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The highest percentage of annual salary that an employee is permitted to utilize with respect to the plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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