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Debt And Capital Lease Obligations (Credit Facility) (Narrative) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Sep. 02, 2017 | Sep. 03, 2016 | Aug. 29, 2015 | Mar. 31, 2017
Debt Instrument [Line Items] |  |  |  |
Borrowings under Credit Facility | $ 546,000,000 | $ 305,000,000 | $ 336,000,000 |
Repayments of debt | 618,500,000 | 301,000,000 | $ 243,000,000 |
New Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Credit facility, maximum borrowing capacity | $ 600,000,000 |  |  |
Maturity date | Apr. 14, 2022 |  |  |
Credit facility, expiration term | 5 years |  |  |
Available increase in amount borrowed | $ 300,000,000 |  |  |
Payments under revolving loans from credit facility | 236,000,000 | 276,000,000 |  |
Borrowings under Credit Facility | 330,000,000 |  |  |
Previous Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Credit facility, maximum borrowing capacity |  |  |  | $ 650,000,000
Payments under revolving loans from credit facility | 345,000,000 |  |  |
Repayment of debt using cash on hand | 16,706,000 |  |  |
Borrowings under Credit Facility | 216,000,000 |  |  |
Term Loan [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Repayments of debt | 37,500,000 | $ 25,000,000 |  |
Letter of Credit [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Credit facility, maximum borrowing capacity | $ 50,000,000 |  |  |
Quarterly fronting fee | 0.125% |  |  |
New Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Borrowing rate under Credit Facility | 2.36% |  |  |
LIBOR [Member] | New Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage points in addition to reference rate used in computation of variable rate on debt instrument | 1.125% |  |  |
Federal Funds Effective Rate [Member] | New Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage points in addition to reference rate used in computation of variable rate on debt instrument | 0.50% |  |  |
Minimum [Member] | New Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Quarterly undrawn fee | 0.10% |  |  |
Minimum [Member] | LIBOR [Member] | New Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage points in addition to reference rate used in computation of variable rate on debt instrument | 1.00% |  |  |
Minimum [Member] | Leverage Ratio Margin [Member] | New Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage points in addition to reference rate used in computation of variable rate on debt instrument | 0.00% |  |  |
Minimum [Member] | Leverage Ratio Margin [Member] | Letter of Credit [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Usage fee, percent | 1.00% |  |  |
Maximum [Member] | New Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Quarterly undrawn fee | 0.20% |  |  |
Maximum [Member] | LIBOR [Member] | New Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage points in addition to reference rate used in computation of variable rate on debt instrument | 1.375% |  |  |
Maximum [Member] | Leverage Ratio Margin [Member] | New Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage points in addition to reference rate used in computation of variable rate on debt instrument | 0.375% |  |  |
Maximum [Member] | Leverage Ratio Margin [Member] | Letter of Credit [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Usage fee, percent | 1.375% |  |  |

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- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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