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Debt - Additional Information (Detail)
 6 Months Ended
Dec. 31, 2019
USD ($)
Day
$ / shares
shares
Sep. 30, 2017
USD ($)
Debt Instrument [Line Items]    
Percentage of voting capital stock 65.00%  
0.50% Convertible Senior Notes due 2022 [Member]    
Debt Instrument [Line Items]    
Debt instrument aggregate principal amounts $ 525,000,000  
Net proceeds from issuance of convertible debt $ 514,500,000  
Interest rates on borrowings 0.50%  
Debt instrument maturity date Jun. 15, 2022  
Conversion of notes in multiples of principal amounts $ 1,000  
Convertible number of shares, principal amount of notes | shares 13.6947  
Initial conversion price per share of common stock | $ / shares $ 73.02  
Note repurchase price, percentage of principal amount of notes 100.00%  
Sale price of common stock, minimum threshold percentage 130.00%  
Sale of common stock, threshold trading days | Day 20  
Sale of common stock, threshold consecutive trading days | Day 30  
Equity component of the principal amount of the convertible debt $ 82,100,000  
Nonconvertible debt borrowing rate 4.39%  
Debt instrument term 5 years  
Debt issuance costs $ 11,100,000  
Initial purchaser's discount 10,500,000  
Legal, accounting, and printing costs 579,000  
Convertible debt issuance costs pro rata to equity components 1,900,000  
Convertible debt issuance costs pro rata to debt components $ 9,200,000  
Debt amortization period 5 years  
Unamortized amounts of debt issuance costs $ 4,800,000  
Unamortized amounts of debt discount $ 42,800,000  
Amendment and Restatement Agreement [Member] | Revolving Credit Facility [Member]    
Debt Instrument [Line Items]    
Debt amortization period 60 months  
Line of credit facility amount   $ 200,000,000
Line of credit facility allowable requests for additional borrowing   100,000,000
Outstanding principal amount $ 0  
Maturity period Sep. 27, 2022  
Repayment date, description The revolving credit facility is required to be repaid in full on the earlier of (i) September 27, 2022, and (ii) the date 91 days prior to the Maturity Date of the Notes if the Notes have not been refinanced in full by such date.  
Debt issuance cost $ 2,300,000  
Description of base rate The revolving credit facility bears interest at our election of a Base Rate plus an Applicable Margin or LIBOR plus an Applicable Margin. Swingline loans bear interest at a Base Rate plus an Applicable Margin. The Base Rate is a floating rate that is the greater of the Prime Rate, the Federal Funds Rate plus 50 basis points, or LIBOR plus 100 basis points. The Applicable Margin is based on a sliding scale which ranges from 0.25 to 100 basis points for Base Rate loans and 100 basis points to 175 basis points for LIBOR loans.  
Covenant description Under the Agreement, there are various restrictive covenants, including three financial covenants which limit the consolidated total leverage ratio, or leverage ratio, the consolidated interest coverage ratio, or interest coverage ratio, a restriction which places a limit on the amount of capital expenditures that may be made in any fiscal year, a restriction that permits up to $50 million per fiscal quarter of accounts receivable financings, and sets the Specified Leverage Ratio. The leverage ratio is the ratio of debt as of the measurement date to earnings before interest, taxes, depreciation and amortization, or EBITDA, for the four consecutive quarters ending with the quarter of measurement. The current leverage ratio shall not exceed 3.50 to 1.00 provided that for the four fiscal quarters ending after the date of a material acquisition, such maximum leverage ratio shall be adjusted to 3.75 to 1.00, and thereafter, shall not be more than 3.50 to 1.00. The interest coverage ratio is EBITDA to interest expense for the four consecutive quarters ending with the quarter of measurement. The interest coverage ratio must not be less than 3.50 to 1.0 during the term of the Agreement. The Specified Leverage Ratio is the ratio used in determining, among other things, whether we are permitted to make dividends and/or prepay certain indebtedness, at a fixed ratio of 3.00 to 1.00. As of the end of the fiscal quarter, we were in compliance with the restrictive covenants  
Maximum accounts receivable financings per quarter $ 50,000,000  
Maximum leverage ratio permitted 3.50%  
Minimum interest coverage ratio 3.50%  
Fixed coverage ratio 3.00%  
Amendment and Restatement Agreement [Member] | Revolving Credit Facility [Member] | For The First Four Fiscal Quarters Ending After Date of Material Acquisition [Member]    
Debt Instrument [Line Items]    
Maximum leverage ratio permitted 3.75%  
Amendment and Restatement Agreement [Member] | Revolving Credit Facility [Member] | Thereafter [Member]    
Debt Instrument [Line Items]    
Maximum leverage ratio permitted 3.50%  
Amendment and Restatement Agreement [Member] | Revolving Credit Facility [Member] | Federal Funds Rates [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate 0.50%  
Amendment and Restatement Agreement [Member] | Revolving Credit Facility [Member] | LIBOR [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate 1.00%  
Amendment and Restatement Agreement [Member] | Revolving Credit Facility [Member] | Minimum [Member]    
Debt Instrument [Line Items]    
Commitment fee percentage of unused portion 0.175%  
Amendment and Restatement Agreement [Member] | Revolving Credit Facility [Member] | Minimum [Member] | LIBOR [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate 1.00%  
Amendment and Restatement Agreement [Member] | Revolving Credit Facility [Member] | Minimum [Member] | Base Rate [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate 0.0025%  
Amendment and Restatement Agreement [Member] | Revolving Credit Facility [Member] | Maximum [Member]    
Debt Instrument [Line Items]    
Commitment fee percentage of unused portion 0.25%  
Amendment and Restatement Agreement [Member] | Revolving Credit Facility [Member] | Maximum [Member] | LIBOR [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate 1.75%  
Amendment and Restatement Agreement [Member] | Revolving Credit Facility [Member] | Maximum [Member] | Base Rate [Member]    
Debt Instrument [Line Items]    
Basis spread on variable rate 1.00%  
Amendment and Restatement Agreement [Member] | Letter of Credit [Member]    
Debt Instrument [Line Items]    
Line of credit facility amount   20,000,000
Amendment and Restatement Agreement [Member] | Bridge Loan [Member]    
Debt Instrument [Line Items]    
Line of credit facility amount   $ 20,000,000