Debt Instrument, Floor Rate

No definition available.

Name:	trmb_DebtInstrumentFloorRate
Namespace Prefix:	trmb_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Number Of Revolving Loan Facilities

+ References

No definition available.

+ Details

Name:	trmb_NumberOfRevolvingLoanFacilities
Namespace Prefix:	trmb_
Data Type:	xbrli:integerItemType
Balance Type:	na
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

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
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 current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ 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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: 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

+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Debt (Narrative) (Detail) € in Millions, £ in Millions, $ in Millions	May 04, 2020 USD ($)	Jul. 03, 2020 USD ($) loan	Jul. 03, 2020 GBP (£) loan	Jul. 03, 2020 EUR (€) loan	Feb. 24, 2020 GBP (£)	Jan. 03, 2020 USD ($)
Debt Instrument [Line Items]
Debt outstanding		$ 1,832.7				$ 1,843.2
Uncommitted Revolving Credit Facilities 55 million GBP
Debt Instrument [Line Items]
Current borrowing capacity \| £			£ 55.0		£ 55.0
Number of revolving loan facilities \| loan		1	1	1
Uncommitted Revolving Credit Facilities $75 million
Debt Instrument [Line Items]
Current borrowing capacity		$ 75.0
Number of revolving loan facilities \| loan		2	2	2
Uncommitted Revolving Credit Facilities 100 million euros
Debt Instrument [Line Items]
Current borrowing capacity \| €				€ 100.0
Number of revolving loan facilities \| loan		1	1	1
JPMorgan Chase Bank \| Revolving Credit Facility \| Unsecured Debt [Member] \| 2018 Credit Facility
Debt Instrument [Line Items]
Current borrowing capacity		$ 1,750.0
JPMorgan Chase Bank \| Revolving Credit Facility \| Unsecured Debt [Member] \| 2018 Loan Amendment
Debt Instrument [Line Items]
Current borrowing capacity	$ 225.0
JPMorgan Chase Bank \| Revolving Credit Facility, due May 2023 \| Unsecured Debt [Member] \| 2018 Credit Facility
Debt Instrument [Line Items]
Current borrowing capacity		1,250.0
JPMorgan Chase Bank \| Delayed Draw Term Loan \| Unsecured Debt [Member] \| 2018 Credit Facility
Debt Instrument [Line Items]
Current borrowing capacity		500.0
JPMorgan Chase Bank \| Additional Loan Facility \| Unsecured Debt [Member] \| 2018 Credit Facility
Debt Instrument [Line Items]
Current borrowing capacity		$ 500.0
LIBOR \| JPMorgan Chase Bank \| Revolving Credit Facility \| Unsecured Debt [Member] \| 2018 Loan Amendment
Debt Instrument [Line Items]
Floor rate	1.00%
EURIBOR \| JPMorgan Chase Bank \| Revolving Credit Facility \| Unsecured Debt [Member] \| 2018 Loan Amendment
Debt Instrument [Line Items]
Floor rate	1.00%
Minimum \| Base Rate \| JPMorgan Chase Bank \| Revolving Credit Facility \| Unsecured Debt [Member] \| 2018 Loan Amendment
Debt Instrument [Line Items]
Variable rate	0.75%
Minimum \| LIBOR \| JPMorgan Chase Bank \| Revolving Credit Facility \| Unsecured Debt [Member] \| 2018 Loan Amendment
Debt Instrument [Line Items]
Variable rate	1.75%
Minimum \| EURIBOR \| JPMorgan Chase Bank \| Revolving Credit Facility \| Unsecured Debt [Member] \| 2018 Loan Amendment
Debt Instrument [Line Items]
Variable rate	1.75%
Maximum \| Base Rate \| JPMorgan Chase Bank \| Revolving Credit Facility \| Unsecured Debt [Member] \| 2018 Loan Amendment
Debt Instrument [Line Items]
Variable rate	1.625%
Maximum \| LIBOR \| JPMorgan Chase Bank \| Revolving Credit Facility \| Unsecured Debt [Member] \| 2018 Loan Amendment
Debt Instrument [Line Items]
Variable rate	2.625%
Maximum \| EURIBOR \| JPMorgan Chase Bank \| Revolving Credit Facility \| Unsecured Debt [Member] \| 2018 Loan Amendment
Debt Instrument [Line Items]
Variable rate	2.625%