Debt Instrument, Convertible, Carrying Amount Of Liability Component

No definition available.

Name:	lite_DebtInstrumentConvertibleCarryingAmountOfLiabilityComponent
Namespace Prefix:	lite_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Debt Instrument, Convertible, Share Price Threshold

+ References

No definition available.

+ Details

Name:	lite_DebtInstrumentConvertibleSharePriceThreshold
Namespace Prefix:	lite_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Number Of Trading Days Stock Price Share Price Threshold To Trigger Conversion

+ References

No definition available.

+ Details

Name:	lite_NumberOfTradingDaysStockPriceSharePriceThresholdToTriggerConversion
Namespace Prefix:	lite_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- 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://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-SubTopic 10
-Topic 210
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-4

+ Details

Name:	us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-5

+ Details

Name:	us-gaap_DebtInstrumentConvertibleConversionPrice1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentConvertibleThresholdConsecutiveTradingDays1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentConvertibleThresholdPercentageOfStockPriceTrigger
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 55
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482949/835-30-55-8

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481568/470-20-55-69B

Reference 4: http://www.xbrl.org/2003/role/exampleRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 69C
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481568/470-20-55-69C

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482900/835-30-50-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482925/835-30-45-2

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482925/835-30-45-1A

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482925/835-30-45-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482900/835-30-50-1

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1D
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1D

+ Details

Name:	us-gaap_DeferredFinanceCostsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

Name:	us-gaap_LongTermDebtAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=lite_ConvertibleSeniorNotesDue2026Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=lite_ConvertibleSeniorNotesDue2028Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=lite_ConvertibleSeniorNotesDue2029Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=lite_ConvertibleSeniorNotesDue2032Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt - Components of Convertible Notes (Details)		1 Months Ended					3 Months Ended	6 Months Ended	9 Months Ended
Debt - Components of Convertible Notes (Details)	Dec. 27, 2025 trading_day	Mar. 31, 2022 USD ($) trading_day $ / shares	Dec. 31, 2019 USD ($) $ / shares	Dec. 31, 2019 USD ($) trading_day $ / shares	Dec. 31, 2019 USD ($) day $ / shares	Dec. 31, 2019 USD ($) $ / shares	Mar. 28, 2026 USD ($) day trading_day $ / shares	Dec. 27, 2025 trading_day	Mar. 28, 2026 USD ($) trading_day $ / shares	Sep. 08, 2025 USD ($) $ / shares	Jun. 28, 2025 USD ($)	Jun. 16, 2023 USD ($) $ / shares
Liability component
Long-term							$ 43,200,000		$ 43,200,000		$ 2,562,600,000
2026 Notes
Liability component
Sale price of common stock (in usd per share) \| $ / shares						$ 129.08
Convertible notes
Liability component
Principal							3,198,400,000		3,198,400,000		2,514,700,000
Unamortized debt issuance costs							(15,000,000.0)		(15,000,000.0)		(8,500,000)
Long-term							0		0		2,506,200,000
Net carrying amount of the liability component							$ 3,183,400,000		3,183,400,000		2,506,200,000
Debt instrument, convertible, threshold percentage of stock price trigger							130.00%
Stock price share price threshold to trigger conversion (in days) \| trading_day							20
Conversion threshold consecutive trading days (in days) \| day							30
Convertible notes \| 2026 Notes
Liability component
Principal			$ 1,050,000,000	$ 1,050,000,000	$ 1,050,000,000	$ 1,050,000,000	$ 468,700,000		468,700,000		1,050,000,000
Unamortized debt issuance costs							(400,000)		(400,000)		(1,700,000)
Long-term							$ 468,300,000		$ 468,300,000
Net carrying amount of the liability component											1,048,300,000
Sale price of common stock (in usd per share) \| $ / shares						$ 129.08
Debt instrument, convertible, threshold percentage of stock price trigger			130.00%
Conversion price (in usd per share) \| $ / shares			$ 99.29	$ 99.29	$ 99.29	$ 99.29	$ 99.29		$ 99.29
Stock price share price threshold to trigger conversion (in days) \| day					20
Conversion threshold consecutive trading days (in days)				30	30
Convertible notes \| 2028 Notes
Liability component
Principal		$ 861,000,000.0					$ 861,000,000.0		$ 861,000,000.0		861,000,000.0
Unamortized debt issuance costs							(2,500,000)		(2,500,000)		(3,300,000)
Long-term							$ 858,500,000		$ 858,500,000
Net carrying amount of the liability component											857,700,000
Sale price of common stock (in usd per share) \| $ / shares		$ 170.34
Debt instrument, convertible, threshold percentage of stock price trigger		130.00%
Conversion price (in usd per share) \| $ / shares		$ 131.03					$ 131.03		$ 131.03
Stock price share price threshold to trigger conversion (in days) \| trading_day		20
Conversion threshold consecutive trading days (in days) \| trading_day		30
Convertible notes \| 2029 Notes
Liability component
Principal							$ 603,700,000		$ 603,700,000		603,700,000	$ 603,700,000
Unamortized debt issuance costs							(2,800,000)		(2,800,000)		(3,500,000)
Long-term							$ 600,900,000		$ 600,900,000
Net carrying amount of the liability component											$ 600,200,000
Sale price of common stock (in usd per share) \| $ / shares									$ 90.40
Debt instrument, convertible, threshold percentage of stock price trigger								130.00%	130.00%
Conversion price (in usd per share) \| $ / shares							$ 69.54		$ 69.54			$ 69.54
Stock price share price threshold to trigger conversion (in days) \| trading_day								20	20
Conversion threshold consecutive trading days (in days) \| trading_day								30	30
Convertible notes \| 2032 Notes
Liability component
Principal							$ 1,265,000,000		$ 1,265,000,000	$ 1,265,000,000
Unamortized debt issuance costs							(9,300,000)		(9,300,000)
Long-term							$ 1,255,700,000		$ 1,255,700,000
Debt instrument, convertible, threshold percentage of stock price trigger	130.00%
Conversion price (in usd per share) \| $ / shares							$ 187.77		$ 187.77	$ 187.77
Stock price share price threshold to trigger conversion (in days) \| trading_day	20
Conversion threshold consecutive trading days (in days) \| trading_day	30