Cover Page - USD ($) $ in Millions	12 Months Ended
	Oct. 02, 2020	Nov. 12, 2020	Apr. 03, 2020
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Oct. 02, 2020
Document Transition Report	false
Entity File Number	001-35451
Entity Registrant Name	MACOM Technology Solutions Holdings, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	27-0306875
Entity Address, Address Line One	100 Chelmsford Street
Entity Address, City or Town	Lowell
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	01851
City Area Code	978
Local Phone Number	656-2500
Title of 12(b) Security	Common Stock, par value $0.001 per share
Trading Symbol	MTSI
Security Exchange Name	NASDAQ
Entity Well-known Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 864.9
Entity Common Stock, Share Outstanding		67,961,663
Documents Incorporated by Reference [Text Block]	Part III incorporates certain information by reference from the registrant's definitive proxy statement for the 2021 Annual Meeting of Stockholders, which will be filed no later than 120 days after the close of the registrant's fiscal year ended October 2, 2020.
Entity Central Index Key	0001493594
Current Fiscal Year End Date	--10-02
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Amendment flag	false