ACQUISITIONS AND INVESTMENTS - Additional Information (Detail)				3 Months Ended			9 Months Ended		12 Months Ended
	Feb. 24, 2020 USD ($)	Mar. 08, 2019 USD ($)	Jan. 02, 2019 USD ($)	Sep. 26, 2020 USD ($)	Mar. 28, 2020	Sep. 28, 2019 USD ($)	Sep. 26, 2020 USD ($)	Sep. 28, 2019 USD ($)	Dec. 28, 2019 USD ($) site	Jun. 27, 2020 USD ($)	Feb. 29, 2020 USD ($)
Business Acquisition [Line Items]
Purchase price for acquisitions net of cash acquired				$ (1,400,000)		$ 6,200,000	$ 1,300,600,000	$ 682,200,000
Goodwill				9,887,000,000.0			9,887,000,000.0		$ 9,237,500,000
MTD approximate 2019 annual revenue				$ 3,850,200,000		$ 3,633,100,000	$ 10,127,000,000.0	$ 10,728,000,000.0
MTD
Business Acquisition [Line Items]
Ownership percentage			20.00%
Cash paid for equity method investment			$ 234,000,000
MTD approximate 2019 annual revenue									2,400,000,000
Option to purchase additional ownership in equity method investment, as a percent			80.00%
Consolidated Aerospace Manufacturing (CAM)
Business Acquisition [Line Items]
Estimated purchase price	$ 1,460,000,000
Purchase price for acquisitions net of cash acquired	1,300,000,000
Contingent consideration	200,000,000.0
Fair value of contingent consideration at date of acquisition	$ 155,300,000									$ 155,300,000
Weighted average useful life of intangible assets	20 years
Estimate of tax deductible goodwill	$ 620,600,000
Deferred tax liabilities	18,000,000.0
Estimated acquisition date value	860,300,000
Goodwill	$ 631,500,000
Equipment Solution Attachments Group (IES)
Business Acquisition [Line Items]
Purchase price for acquisitions net of cash acquired		$ 653,500,000
Weighted average useful life of intangible assets		14 years
Estimate of tax deductible goodwill		$ 2,400,000
Working capital		77,800,000
Deferred tax liabilities		78,300,000
Intangible assets		328,000,000.0
Estimated acquisition date value		342,200,000
Goodwill		311,300,000
Finite-lived intangible assets		$ 304,000,000.0
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Purchase price for acquisitions net of cash acquired									40,800,000
Working capital									5,900,000
Estimated acquisition date value									19,000,000.0
Goodwill									21,800,000
Finite-lived intangible assets									$ 8,800,000
Number of businesses acquired | site									5
Minimum | Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Weighted average useful life of intangible assets					8 years
Maximum | Consolidated Aerospace Manufacturing (CAM)
Business Acquisition [Line Items]
Fair value of contingent consideration at date of acquisition											$ 200,000,000.0
Maximum | Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Weighted average useful life of intangible assets					10 years