Accounting Policies - Additional Information (Detail) $ in Thousands, € in Millions	1 Months Ended	3 Months Ended								11 Months Ended	12 Months Ended
	Apr. 30, 2015 EUR (€)	Sep. 29, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 30, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jul. 01, 2016 USD ($)	Apr. 01, 2016 USD ($)	Jan. 01, 2016 USD ($)	Oct. 02, 2015 USD ($) shares	Sep. 29, 2017 USD ($) shares	Sep. 30, 2016 USD ($) shares	Oct. 02, 2015 USD ($)
Accounting Policies [Line Items]
Fair market value of long-term debt and short-term borrowings		$ 794,900				$ 870,500					$ 794,900	$ 870,500
Maturities of forecasted transactions using forward exchange contracts											24 months
Accumulated loss on foreign currency translation adjustment		222,621				268,841				$ 226,000	$ 222,621	268,841	$ 226,000
Gain (loss) on foreign currency transactions										1,300	(11,900)	19,800
Depreciation expense										50,700	58,200	49,500
Depreciation expense included in discontinued operations										700
Assets under capital leases		50,500				48,200				$ 40,700	$ 50,500	$ 48,200	40,700
Anti-dilutive shares excluded from computation of earnings per share | shares										409,050	637,800	602,900
Weighted average number of shares outstanding used to compute basic earnings per share | shares										30,729,000	29,767,000	29,490,000
Weighted average number of shares outstanding used to compute diluted earnings per share | shares										31,215,000	30,003,000	29,764,000
Tax expense (benefit)		9,705	$ 10,703	$ 13,080	$ (463)	11,656	$ 7,358	$ 3,004	$ (161)	$ 16,486	$ 33,025	$ 21,857	24,443	[1]
Favorable impact to operating cash flows										$ 144,295	193,449	167,162	$ 193,666	[1]
New Guidance | Early Adoption
Accounting Policies [Line Items]
Tax expense (benefit)											(2,300)
Favorable impact to operating cash flows											2,300
Positive cumulative effect on retained earnings											900
Reduction of additional paid in capital											$ (900)
Minimum
Accounting Policies [Line Items]
Estimated amortization of intangible assets											2 years
Minimum | Building
Accounting Policies [Line Items]
Estimated useful lives of property, plant and equipment											15 years
Minimum | Machinery and Equipment
Accounting Policies [Line Items]
Estimated useful lives of property, plant and equipment											3 years
Maximum
Accounting Policies [Line Items]
Estimated amortization of intangible assets											20 years
Maximum | Building
Accounting Policies [Line Items]
Estimated useful lives of property, plant and equipment											30 years
Maximum | Machinery and Equipment
Accounting Policies [Line Items]
Estimated useful lives of property, plant and equipment											10 years
3.625% Senior Notes, due April 2023
Accounting Policies [Line Items]
Fair market value of long-term debt and short-term borrowings		$ 403,200				$ 365,300					$ 403,200	$ 365,300
Debt instrument, interest rate	3.625%	3.625%				3.625%					3.625%	3.625%
Debt instruments maturity date	Apr. 30, 2023										Apr. 30, 2023	Apr. 30, 2023
Net Investment Hedges | 3.625% Senior Notes, due April 2023
Accounting Policies [Line Items]
Derivative notional amount | €	€ 330.0
Foreign Exchange Forward
Accounting Policies [Line Items]
Derivative notional amount		$ 406,900				$ 450,900					$ 406,900	$ 450,900
Fair value of foreign currency forwards contracts, liabilities						4,900						4,900
Fair value of foreign currency forwards contracts, assets		13,500									13,500
Foreign Exchange Forward | Cash Flow Hedging
Accounting Policies [Line Items]
Derivative notional amount		292,100				308,200					292,100	308,200
Foreign Exchange Forward Contracts Related to Net Monetary Assets | Cash Flow Hedging
Accounting Policies [Line Items]
Derivative notional amount		$ 70,000				$ 70,000					$ 70,000	$ 70,000
Sales Revenue Net | Commercial Aerospace Market | Product Concentration Risk
Accounting Policies [Line Items]
Concentration risk, percentage											40.00%
U.S. Government
Accounting Policies [Line Items]
Sales revenue percentage		21.00%				18.00%					21.00%	18.00%

[1] (Recast)