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Long-Term Debt - Convertible Notes Narrative (Details) | Nov. 01, 2019 USD ($) day $ / shares | Oct. 30, 2019 USD ($) $ / shares | Aug. 29, 2020 USD ($) | Aug. 31, 2019 USD ($)
--- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |
Offering-related costs |  |  | $ 13,076,000 | $ 5,706,000
Call Spread Transactions |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage increase of strike price |  | 100.00% |  |
Equity component of issuance | $ 85,000,000.0 |  |  |
Equity component of issuance, net of tax | 64,100,000 |  |  |
Offering-related costs | 9,800,000 |  |  |
Deferred offering costs classified as liability | 7,000,000.0 |  |  |
Deferred offering costs classified as equity | 2,800,000 |  |  |
Call Spread Transactions | Warrant |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Strike price (in dollars per share) | $ / shares |  | $ 96.20 |  |
Convertible Senior Notes due 2025 |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt amount | $ 300,000,000.0 |  |  |
Interest rate, stated percentage | 1.50% |  |  |
Proceeds from issuance of notes | $ 290,200,000 |  |  |
Conversion rate | 0.0156906 |  |  |
Conversion price (in dollars per share) | $ / shares | $ 63,730,000 |  |  |
Number of consecutive trading days | day | 30 |  |  |
Consecutive business days | day | 5 |  |  |
Consecutive trading days | day | 5 |  |  |
Convertible Senior Notes due 2025 | Convertible Note Hedge Transactions |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Strike price (in dollars per share) | $ / shares |  | $ 63.73 |  |
Convertible Senior Notes due 2025 | Call Spread Transactions |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt amount | $ 215,000,000.0 |  |  |
Interest rate, stated percentage | 8.00% |  |  |
Proceeds from issuance of notes |  | $ 28,600,000 |  |
Convertible Senior Notes due 2025 | Minimum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage of the conversion price | 130.00% |  |  |
Number of trading days | day | 20 |  |  |
Convertible Senior Notes due 2025 | Maximum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage of the conversion price | 98.00% |  |  |

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