Debt instrument maturity month and year.

No definition available.

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Balance Type:	na
Period Type:	duration

- Definition

Debt instrument original principal balance maturity month and year.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Debt instrument redemption price percentage plus accrued interest.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Government refundable advances.

+ References

No definition available.

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Balance Type:	credit
Period Type:	instant

- Definition

Imputed interest rate.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Loan amortization percentage under credit facility.

+ References

No definition available.

+ Details

Name:	esl_LoanAmortizationPercentageUnderCreditFacility
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Present value of minimum lease payments for capital leases net of executory costs, including amounts paid by the lessee to the lessor for insurance, maintenance and taxes.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737

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Balance Type:	credit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num: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/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The effective interest rate at the end of the reporting period.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (e)
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Balance Type:	debit
Period Type:	duration

- Details

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Debt - Additional Information (Detail) € in Millions			1 Months Ended	6 Months Ended	12 Months Ended
Debt - Additional Information (Detail) € in Millions	Aug. 03, 2015 USD ($)	Apr. 09, 2015 USD ($)	Apr. 30, 2015 USD ($)	Mar. 30, 2018 USD ($)	Sep. 29, 2017 USD ($)	Apr. 30, 2015 EUR (€)
Debt Instrument [Line Items]
Credit facilities				$ 45,000,000	$ 50,000,000
Imputed interest on advance				2.52%
Government refundable advances				$ 44,590,000	45,549,000
Present value of minimum lease payment				$ 68,300,000	$ 69,000,000
U.S. Term Loan, due April 2020
Debt Instrument [Line Items]
Loan amortization rate				1.25%
Debt instrument original principal balance maturity period				2020-03
Debt instruments maturity period				2020-04	2020-04
3.625% Senior Notes, Due April 2023
Debt Instrument [Line Items]
Debt instruments maturity period				2023-04	2023-04
Debt instrument, interest rate				3.625%	3.625%	3.625%
Fair market value of long-term debt and short-term borrowings				$ 414,300,000	$ 403,200,000
3.625% Senior Notes, Due April 2023 \| TA Mfg Limited
Debt Instrument [Line Items]
Debt issuance costs			$ 5,900,000
Debt instrument, face amount \| €						€ 330.0
Debt instrument, interest rate						3.625%
Net proceeds from issuance of debt			$ 350,800,000
3.625% Senior Notes, Due April 2023 \| Debt Redemption After April 15, 2018 \| TA Mfg Limited
Debt Instrument [Line Items]
Debt instrument redemption price percentage plus accrued interest			102.719%
3.625% Senior Notes, Due April 2023 \| Debt Redemption After April 15, 2021 \| TA Mfg Limited
Debt Instrument [Line Items]
Debt instrument redemption price percentage plus accrued interest			100.00%
London Interbank Offered Rate (LIBOR) \| U.S. Term Loan, due April 2020
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate				1.50%
Interest rate				3.38%
London Interbank Offered Rate (LIBOR) \| Minimum \| U.S. Term Loan, due April 2020
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate	1.25%
London Interbank Offered Rate (LIBOR) \| Maximum \| U.S. Term Loan, due April 2020
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate	2.00%
Delayed-Draw Term Loan Facility \| U.S. Term Loan, due April 2020
Debt Instrument [Line Items]
Funds borrowed under the delayed-draw term Loan	$ 250,000,000
Secured Debt
Debt Instrument [Line Items]
Credit facility maturity date		Apr. 09, 2020
Debt issuance costs		$ 2,300,000
Credit facilities				$ 45,000,000
Secured Debt \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate				1.50%
Interest rate				3.38%
Secured Debt \| London Interbank Offered Rate (LIBOR) \| Minimum
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate		1.25%
Secured Debt \| London Interbank Offered Rate (LIBOR) \| Maximum
Debt Instrument [Line Items]
Interest rate, basis spread on variable rate		2.00%
Secured Debt \| Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		$ 500,000,000
Secured Debt \| Delayed-Draw Term Loan Facility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		$ 250,000,000