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v3.20.2

Long-term Debt - Narrative (Details) |  |  | 3 Months Ended |  |
--- | --- | --- | --- | --- | ---
Apr. 21, 2020 USD ($) trading_day $ / shares shares | Aug. 24, 2018 USD ($) trading_day $ / shares shares | Sep. 27, 2020 USD ($) | Sep. 29, 2019 USD ($) | Jun. 28, 2020 USD ($) | Mar. 27, 2020
Debt Instrument [Line Items] |  |  |  |  |  |
Repurchase of aggregate principal amount of debt instrument |  |  | $ 100,000 | $ 0 |  |
Discount and issuance costs capitalized |  |  | 400,000 |  |  |
Interest expense capitalized |  |  | 200,000 | $ 0 |  |
Convertible Notes |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Carrying amount of equity component of convertible debt |  |  | 228,300,000 |  | $ 228,300,000 |
Discount and issuance costs capitalized |  |  | 206,200,000 |  | $ 216,000,000.0 |
Convertible Notes | Convertible Notes due September 1, 2023 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Aggregate principal amount |  | $ 500,000,000.0 |  |  |  |
Stated interest rate (as a percent) |  | 0.875% |  |  |  |
Aggregate principal amount of conversion feature |  | $ 75,000,000.0 |  |  |  |
Proceeds from issuance of long-term debt |  | $ 562,100,000 |  |  |  |
Conversion rate (shares) | shares |  | 16.6745 |  |  |  |
Conversion price (USD per share) | $ / shares |  | $ 59.97 |  |  |  |
Threshold percentage of stock price trigger (as a percent) |  | 130.00% |  |  |  |
Threshold trading days | trading_day |  | 20 |  |  |  |
Threshold consecutive trading days | trading_day |  | 30 |  |  |  |
Conversion ratio (as a percent) |  | 1 |  |  |  |
Period of reported sale price of common stock |  | 5 days |  |  |  |
Period of consecutive reported sale price of common stock |  | 10 days |  |  |  |
Percentage of product of last reported price (as a percent) |  | 98.00% |  |  |  |
Repurchase of aggregate principal amount of debt instrument |  |  | 150,200,000 |  |  |
Decrease in accrued interest from repurchase of debt |  |  | 200,000 |  |  |
Carrying amount of equity component of convertible debt |  |  | 110,600,000 |  |  |
Decrease in carrying amount of equity component of convertible debt |  |  | 27,700,000 |  |  |
Effective interest rate (as a percent) |  | 5.87% |  |  |  |
Convertible Notes | Convertible Notes due September 1, 2023 | Level 2 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Fair value of debt instrument |  |  | 1,333,200,000 |  |  |
Convertible Notes | Convertible Notes due May 1, 2026 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Aggregate principal amount | $ 500,000,000.0 |  |  |  |  |
Stated interest rate (as a percent) | 1.75% |  |  |  |  |
Aggregate principal amount of conversion feature | $ 75,000,000.0 |  |  |  |  |
Proceeds from issuance of long-term debt | $ 561,400,000 |  |  |  |  |
Conversion rate (shares) | shares | 21.1346 |  |  |  |  |
Conversion price (USD per share) | $ / shares | $ 47.32 |  |  |  |  |
Threshold percentage of stock price trigger (as a percent) | 130.00% |  |  |  |  |
Threshold trading days | trading_day | 20 |  |  |  |  |
Threshold consecutive trading days | trading_day | 30 |  |  |  |  |
Conversion ratio (as a percent) | 1 |  |  |  |  |
Period of reported sale price of common stock | 5 days |  |  |  |  |
Period of consecutive reported sale price of common stock | 10 days |  |  |  |  |
Percentage of product of last reported price (as a percent) | 98.00% |  |  |  |  |
Proceeds from Notes used to repurchase debt |  |  | 144,300,000 |  |  |
Carrying amount of equity component of convertible debt |  |  | 145,400,000 |  |  |
Effective interest rate (as a percent) | 7.45% |  |  |  |  |
Line of Credit |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Maximum borrowing capacity |  |  | 125,000,000.0 |  |  |
Minimum required ratio of cash equivalents and marketable securities to outstanding loans and letters of credit obligations |  |  |  |  |  | 1.25
Outstanding borrowings |  |  | 0 |  |  |
Remaining borrowing capacity |  |  | $ 125,000,000.0 |  |  |
Average interest rate (as a percent) |  |  | 0.00% |  |  |
Commitment fee rate (as a percent) |  |  | 0.25% |  |  |

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