Debt Instrument, Basis Spread On Variable Rate, Increase (Decrease)

No definition available.

Name:	gtes_DebtInstrumentBasisSpreadOnVariableRateIncreaseDecrease
Namespace Prefix:	gtes_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Debt Instrument, Maturity Date, Outstanding Debt Trigger

+ References

No definition available.

+ Details

Name:	gtes_DebtInstrumentMaturityDateOutstandingDebtTrigger
Namespace Prefix:	gtes_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Debt Instrument, Quarterly Amortization Payment Rate

+ References

No definition available.

+ Details

Name:	gtes_DebtInstrumentQuarterlyAmortizationPaymentRate
Namespace Prefix:	gtes_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The average effective interest rate during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- 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

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

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

+ Details

Name:	us-gaap_DebtInstrumentPeriodicPayment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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

- Details

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

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

Debt - Dollar and Euro Term Loans narrative (Details) - Secured debt - USD ($) $ in Millions		3 Months Ended
	Jan. 29, 2018	Mar. 30, 2019	Mar. 31, 2018
Debt Instrument [Line Items]
Springing maturity trigger on debt		$ 500.0
Dollar Term Loan
Debt Instrument [Line Items]
Increase (decrease) in applicable variable interest rate margin	(0.25%)
Interest rate during period on debt		5.25%
Quarterly amortization payment rate		0.25%
Quarterly amortization payment on debt		$ 8.7	$ 4.3
Dollar Term Loan \| LIBOR
Debt Instrument [Line Items]
Variable interest rate on debt		2.75%
Dollar Term Loan \| LIBOR \| Minimum
Debt Instrument [Line Items]
Variable interest rate on debt		1.00%
Euro Term Loan
Debt Instrument [Line Items]
Increase (decrease) in applicable variable interest rate margin	(0.25%)
Interest rate during period on debt		0.00%
Quarterly amortization payment rate		0.25%
Quarterly amortization payment on debt		$ 3.6	$ 2.0
Euro Term Loan \| LIBOR
Debt Instrument [Line Items]
Variable interest rate on debt		3.00%
Euro Term Loan \| LIBOR \| Minimum
Debt Instrument [Line Items]
Variable interest rate on debt		0.00%