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Segments - Net Sales by Segment (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 28, 2024 | Dec. 30, 2023 | Dec. 31, 2022
Segment Reporting Information [Line Items] |  |  |
Net sales | $ 5,108.4 | $ 5,108.3 | $ 4,842.5
Segment operating earnings | 1,345.7 | 1,310.4 | 1,207.2
Interest expense | (49.6) | (49.9) | (47.1)
Other income (expense) – net | 77.0 | 67.5 | 42.5
Earnings before income taxes | 1,373.1 | 1,328.0 | 1,202.6
Total net sales |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 4,707.4 | 4,730.2 | 4,492.8
Segment cost of goods sold | (2,329.5) | (2,381.1) | (2,311.7)
Gross profit | 2,377.9 | 2,349.1 | 2,181.1
Total segment operating and financial services expenses | (1,309.1) | (1,309.2) | (1,239.9)
Segment operating earnings | 1,068.8 | 1,039.9 | 941.2
Total net sales | Commercial & Industrial Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 1,187.6 | 1,145.6 | 1,058.3
Total net sales | Snap-on Tools Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 1,989.2 | 2,088.8 | 2,072.0
Total net sales | Repair Systems & Information Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 1,530.6 | 1,495.8 | 1,362.5
Financial Service |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 401.0 | 378.1 | 349.7
Total segment operating and financial services expenses | (124.1) | (107.6) | (83.7)
Segment operating earnings | 276.9 | 270.5 | 266.0
Financial Service | Financial Services |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 401.0 | 378.1 | 349.7
Operating Segments |  |  |
Segment Reporting Information [Line Items] |  |  |
Total segment operating and financial services expenses | (1,357.4) | (1,303.6) | (1,215.2)
Segment operating earnings | 1,421.5 | 1,423.6 | 1,315.6
Operating Segments | Commercial & Industrial Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 1,476.8 | 1,458.3 |
Operating Segments | Snap-on Tools Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 1,989.2 | 2,088.8 |
Operating Segments | Repair Systems & Information Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 1,797.9 | 1,781.2 |
Operating Segments | Financial Services |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 401.0 | 378.1 |
Operating Segments | Total net sales |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 5,263.9 | 5,328.3 | 5,138.1
Segment cost of goods sold | (2,886.0) | (2,979.2) | (2,957.0)
Gross profit | 2,377.9 | 2,349.1 | 2,181.1
Operating Segments | Total net sales | Commercial & Industrial Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 1,476.8 | 1,458.3 | 1,399.2
Segment cost of goods sold | (868.6) | (887.5) | (880.5)
Gross profit | 608.2 | 570.8 | 518.7
Personnel | (218.8) | (207.7) | (194.2)
Shipping and handling costs | (27.8) | (24.7) | (24.2)
Depreciation and amortization | (7.8) | (7.5) | (7.4)
Provisions for credit losses | 0.0 | 0.0 | 0.0
Other segment expenses | (111.7) | (104.8) | (95.3)
Total segment operating and financial services expenses | (366.1) | (344.7) | (321.1)
Segment operating earnings | 242.1 | 226.1 | 197.6
Operating Segments | Total net sales | Snap-on Tools Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 1,989.2 | 2,088.8 | 2,072.0
Segment cost of goods sold | (1,050.3) | (1,107.7) | (1,141.7)
Gross profit | 938.9 | 981.1 | 930.3
Personnel | (191.7) | (199.9) | (199.0)
Shipping and handling costs | (87.7) | (93.3) | (90.2)
Depreciation and amortization | (7.5) | (7.5) | (9.0)
Provisions for credit losses | 0.0 | 0.0 | 0.0
Other segment expenses | (204.7) | (186.6) | (173.4)
Total segment operating and financial services expenses | (491.6) | (487.3) | (471.6)
Segment operating earnings | 447.3 | 493.8 | 458.7
Operating Segments | Total net sales | Repair Systems & Information Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 1,797.9 | 1,781.2 | 1,666.9
Segment cost of goods sold | (967.1) | (984.0) | (934.8)
Gross profit | 830.8 | 797.2 | 732.1
Personnel | (253.9) | (248.9) | (234.0)
Shipping and handling costs | 0.0 | 0.0 | 0.0
Depreciation and amortization | (20.8) | (24.4) | (24.3)
Provisions for credit losses | 0.0 | 0.0 | 0.0
Other segment expenses | (100.9) | (90.7) | (80.5)
Total segment operating and financial services expenses | (375.6) | (364.0) | (338.8)
Segment operating earnings | 455.2 | 433.2 | 393.3
Operating Segments | Total net sales | Financial Services |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 0.0 | 0.0 |
Operating Segments | Financial Service |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 401.0 | 378.1 | 349.7
Operating Segments | Financial Service | Commercial & Industrial Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 0.0 | 0.0 |
Operating Segments | Financial Service | Snap-on Tools Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 0.0 | 0.0 |
Operating Segments | Financial Service | Repair Systems & Information Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 0.0 | 0.0 |
Operating Segments | Financial Service | Financial Services |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 401.0 | 378.1 | 349.7
Personnel | (34.7) | (34.7) | (32.6)
Shipping and handling costs | 0.0 | 0.0 | 0.0
Depreciation and amortization | (1.0) | (0.9) | (0.9)
Provisions for credit losses | (73.7) | (59.1) | (38.2)
Other segment expenses | (14.7) | (12.9) | (12.0)
Total segment operating and financial services expenses | (124.1) | (107.6) | (83.7)
Segment operating earnings | 276.9 | 270.5 | 266.0
Intersegment Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | (556.5) | (598.1) |
Intersegment Eliminations | Total net sales |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | (556.5) | (598.1) | (645.3)
Segment cost of goods sold | 556.5 | 598.1 | 645.3
Intersegment Eliminations | Total net sales | Commercial & Industrial Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | (289.2) | (312.7) | (340.9)
Intersegment Eliminations | Total net sales | Snap-on Tools Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 0.0 | 0.0 | 0.0
Intersegment Eliminations | Total net sales | Repair Systems & Information Group |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | (267.3) | (285.4) | (304.4)
Intersegment Eliminations | Total net sales | Financial Services |  |  |
Segment Reporting Information [Line Items] |  |  |
Net sales | 0.0 | 0.0 |
Corporate |  |  |
Segment Reporting Information [Line Items] |  |  |
Segment operating earnings | $ (75.8) | $ (113.2) | $ (108.4)

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