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Financing - Additional Information (Detail) | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Aug. 31, 2019 USD ($) | Jun. 30, 2019 USD ($) | Apr. 18, 2019 USD ($) | Aug. 25, 2018 USD ($) | Apr. 18, 2017 USD ($)
Debt Instrument [Line Items] |  |  |  |  |
Remaining borrowing capacity under revolving credit facility | $ 1,997,000,000 |  |  |  |
Amount available under credit facility | $ 2,000,000,000 |  |  |  |
Credit Agreement description | less than one year |  |  |  |
Fair value of the Company's debt | $ 5,419,000,000 |  |  | $ 4,948,000,000 |
Excess (shortfall) of fair value of debt over (from) carrying value | $ 212,700,000 |  |  | 57,500,000 |
Debt covenant interest coverage ratio | 5.7 |  |  |  |
Minimum debt covenant interest coverage ratio to be maintained quarterly | 2.5 |  |  |  |
Line of credit facility covenant terms | The Revolving Credit Agreement requires that the Company’s consolidated interest coverage ratio as of the last day of each quarter shall be no less than 2.5:1. This ratio is defined as the ratio of (i) consolidated earnings before interest, taxes and rents to (ii) consolidated interest expense plus consolidated rents. The Company’s consolidated interest coverage ratio as of August 31, 2019 was 5.7:1. |  |  |  |
Other Letters Of Credit [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Borrowings, outstanding | $ 72,900,000 |  |  |  |
Third Amended and Restated Credit Agreement [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Amount available under credit facility | 1,600,000,000 |  |  |  |
Master Extension Agreement [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Amount available under credit facility | 2,000,000,000 |  |  |  |
Revolving credit agreement, available additional borrowing capacity | 400,000,000 |  |  |  |
Maximum amount available under credit facility | $ 2,400,000,000 |  |  |  |
Credit facility expiration date | Nov. 18, 2022 |  |  |  |
Credit Agreement description | Under the Revolving Credit Agreement, the Company may borrow funds consisting of Eurodollar loans, base rate loans or a combination of both. Interest accrues on Eurodollar loans at a defined Eurodollar rate, defined as LIBOR plus the applicable percentage, as defined in the Revolving Credit Agreement, depending upon the Company's senior, unsecured, (non-credit enhanced) long-term debt ratings. Interest accrues on base rate loans as defined in the Revolving Credit Agreement |  |  |  |
Extended expiration of credit facility | 0 days |  |  |  |
Letters of credit, outstanding | $ 3,300,000 |  |  |  |
Letter of Credit [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Maximum amount available under credit facility | 25,000,000 | $ 25,000,000 |  | 75,000,000 |
Borrowings, outstanding | 25,000,000 |  |  |  |
Revolving Credit Facility [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Borrowings, outstanding | 0 |  |  |  |
1.625% Senior Notes due April 2019, effective interest rate of 1.77% [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt |  |  |  | $ 250,000,000 |
Stated interest rate percentage |  |  |  | 1.625% |
3.125% Senior Notes due April 2024, effective interest rate 3.32% [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt | $ 300,000,000 |  | $ 300,000,000 |  |
Stated interest rate percentage | 3.125% |  |  |  |
3.750% Senior Notes due April 2029, effective interest rate of 3.86% [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt | $ 450,000,000 |  | $ 450,000,000 |  |
Stated interest rate percentage | 3.75% |  |  |  |
3.750% Senior Notes due June 2027, effective interest rate of 3.83% [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt | $ 600,000,000 |  |  | $ 600,000,000 | $ 600,000,000
Stated interest rate percentage | 3.75% |  |  | 3.75% |

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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