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v3.21.1

Debt - Additional Information (Detail) |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Oct. 23, 2019 USD ($) | Sep. 24, 2019 USD ($) | Aug. 31, 2017 USD ($) d $ / shares | Mar. 31, 2021 USD ($) d | Sep. 30, 2020 USD ($) | Dec. 31, 2020 USD ($) | Mar. 31, 2021 USD ($) d | Mar. 31, 2020 USD ($) | Jun. 30, 2020 USD ($)
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Cash paid for interest |  |  |  |  |  |  | $ 17,963,000 | $ 46,430,000 |
Available credit under lines of credit |  |  |  | $ 448,600,000 |  |  | $ 448,600,000 |  |
Weighted average interest rate of total borrowings |  |  |  | 1.50% |  |  | 1.50% | 3.70% |
0.25% Convertible Senior Notes due 2022 |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, interest rate |  |  |  | 0.25% |  |  | 0.25% | 0.25% |
Aggregate principal amount |  |  | $ 345,000,000 |  |  |  |  |  |
Aggregate principal outstanding |  |  |  | $ 344,988,000 |  |  | $ 344,988,000 |  | $ 345,000,000
Debt instrument, conversion ratio |  |  | 0.02125 |  |  |  |  |  |
Debt instrument conversion, conversion price per share (in usd per share) | $ / shares |  |  | $ 47.06 |  |  |  |  |  |
Debt instrument conversion, If-converted value of notes |  |  |  |  | $ 346,200,000 |  | $ 501,200,000 |  |
Debt instrument conversion, trading days | d |  |  | 20 | 20 |  |  |  |  |
Debt instrument conversion, consecutive trading days | d |  |  | 30 | 30 |  |  |  |  |
Debt instrument conversion, conversion price percentage |  |  | 130.00% | 130.00% |  |  |  |  |
Debt instrument conversion, business day period |  |  | 5 days |  |  |  |  |  |
Debt instrument conversion, measurement period |  |  | 5 days |  |  |  |  |  |
Debt instrument conversion, measurement period percentage |  |  | 98.00% |  |  |  |  |  |
Effective interest rate |  |  |  | 4.50% |  |  | 4.50% |  | 4.50%
Unamortized discount amount |  |  |  | $ 17,900,000 |  |  | $ 17,900,000 |  |
0.50% Finisar Convertible Notes |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Redemption price percentage |  | 100.00% |  |  |  |  | 100.00% |  |
Debt instrument, interest rate |  |  |  | 0.50% |  |  | 0.50% |  |
Aggregate principal amount |  | $ 560,100,000 |  |  |  |  |  |  |
Debt instrument, repurchase amount | $ 561,100,000 |  |  |  |  |  |  |  |
Aggregate principal outstanding |  |  |  | $ 14,900,000 |  |  | $ 14,900,000 |  |
Bank of America, N.A. |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Letter of credit sub-facility maximum borrowing capacity |  |  |  | 25,000,000.0 |  |  | 25,000,000.0 |  |
Swing loan sub-facility maximum initial borrowing capacity |  |  |  | 20,000,000.0 |  |  | 20,000,000.0 |  |
Senior Secured Credit Facility | Bank of America, N.A. |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  | 2,425,000,000 |  |  | 2,425,000,000 |  |
Term A Loan Facility |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from term loan | $ 561,000,000.0 |  |  |  |  |  |  |  |
Aggregate principal outstanding |  |  |  | 1,072,925,000 |  |  | 1,072,925,000 |  | $ 1,194,463,000
Term A Loan Facility | Bank of America, N.A. |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  | 1,255,000,000 |  |  | $ 1,255,000,000 |  |
Debt agreement term |  |  |  |  |  |  | 5 years |  |
Redemption price percentage |  |  |  |  |  |  | 1.25% |  |
Term B Loan Facility |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  | 720,000,000 |  |  | $ 720,000,000 |  |
Debt agreement term |  |  |  |  |  |  | 7 years |  |
Cash paid for interest |  |  |  |  |  |  | $ 600,000 |  |
Debt issuance costs |  |  |  |  |  | $ 24,700,000 |  |  |
Aggregate principal outstanding |  |  |  | 0 |  |  | 0 |  | 714,600,000
Revolving Credit Facility |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Aggregate principal outstanding |  |  |  | 0 |  |  | 0 |  | $ 74,000,000
Revolving Credit Facility | Bank of America, N.A. |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Aggregate principal amount |  |  |  | $ 450,000,000 |  |  | $ 450,000,000 |  |
Debt agreement term |  |  |  |  |  |  | 5 years |  |
Senior Credit Facilities | Fifth Fiscal Quarter Through Eighth Fiscal Quarter After Closing Date |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Leverage ratio |  |  |  |  |  |  | 4.50 |  |
Senior Credit Facilities | Subsequent Fiscal Quarter |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Leverage ratio |  |  |  |  |  |  | 4.00 |  |
Senior Credit Facilities | Minimum |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Interest coverage ratio |  |  |  |  |  |  | 3.00 |  |
Senior Credit Facilities | Maximum | First Four Fiscal Quarters After Closing Date |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Leverage ratio |  |  |  |  |  |  | 5.00 |  |
Senior Credit Facilities | Federal Funds Rate |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, rate added on variable rate |  |  |  |  |  |  | 0.50% |  |
Senior Credit Facilities | Eurodollar |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Debt instrument, rate added on variable rate |  |  |  |  |  |  | 1.00% |  |
Senior Credit Facilities | 0.25% Convertible Senior Notes due 2022 | I I V I Notes |  |  |  |  |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |  |  |  |  |
Number of days prior to maturity of outstanding | d |  |  |  |  |  |  | 120 |  |
Debt instrument, interest rate |  |  |  | 0.25% |  |  | 0.25% |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: 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=120400017&loc=d3e572229-122910 Reference 3: 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=120391452&loc=d3e13212-122682 Reference 4: 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=120398452&loc=d3e534808-122878 + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399 Reference 3: 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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