Merger with Conexant Holdings, Inc. (Details 1) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jun. 29, 2012
Acquired intangible assets
Estimated Fair Value	$ 118,600
Multi-Period Excess Earnings [Member] \| Customer relationships [Member]
Acquired intangible assets
Estimated Fair Value	50,300
Remaining Useful Life (yrs)	7 years
Multi-Period Excess Earnings [Member] \| In-process research and development [Member]
Acquired intangible assets
Estimated Fair Value	46,000
Multi-Period Excess Earnings [Member] \| Backlog [Member]
Acquired intangible assets
Estimated Fair Value	4,200
Remaining Useful Life (yrs)	6 months
Relief-from-royalty [Member] \| Trade name and trademarks [Member]
Acquired intangible assets
Estimated Fair Value	15,100
Relief-from-royalty [Member] \| Patents [Member]
Acquired intangible assets
Estimated Fair Value	2,900
Remaining Useful Life (yrs)	8 years 3 months 18 days
Comparative Business Valuation [Member] \| Non-compete agreement [Member]
Acquired intangible assets
Estimated Fair Value	$ 100
Remaining Useful Life (yrs)	1 year

CONEXANT SYSTEMS INC 10-Q/A