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Pension Plans - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 28, 2013 Age | Dec. 29, 2012 | Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items] |  |  |
Normal retirement age | 65 |  |
Accumulated benefit obligation | $ 1,101.4 | $ 1,170.6 |
Description of amortization actuarial gains and losses | Actuarial gains and losses in excess of 10 percent of the greater of the projected benefit obligation or market-related value of assets are amortized on a straight-line basis over the average remaining service period of active participants or over the average remaining life expectancy for plans with primarily inactive participants. |  |
Expected long-term rate of return on plan assets | 7.60% | 7.70% | 7.80%
Expense recognized related to 401(k)plan | 5.9 | 5.7 | 5.2
Domestic Equity Securities [Member] | Prior Period Adjustment [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Increase (Decrease) in equity security plan assets due to prior period corrections | (63.4) |  |
Foreign Equity Securities [Member] | Prior Period Adjustment [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Increase (Decrease) in equity security plan assets due to prior period corrections | 63.4 |  |
Commingled Funds - Domestic Equity Securities [Member] | Prior Period Adjustment [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Increase (Decrease) in commingled funds due to prior period corrections | (32.0) |  |
Commingled Funds - Foreign Equity Securities [Member] | Prior Period Adjustment [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Increase (Decrease) in commingled funds due to prior period corrections | 32.0 |  |
Minimum [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Time horizon for asset under risk and correlation assumption (in years) | 10 |  |
Maximum [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Time horizon for asset under risk and correlation assumption (in years) | 20 |  |
Domestic Pension Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Increase in pension expense | 5.3 |  |
Weighted-average discount rate | 5.20% |  |
Increase in projected benefit obligation | 50.9 |  |
Percentage of projected benefit obligations | 81.00% |  |
Description of discount rate assumption | Lowering Snap-on's domestic discount rate assumption by 50 basis points |  |
Expected future employer contributions | 1.8 |  |
Expected long-term rate of return on plan assets | 7.60% |  |
Foreign Pension Plans [Member] |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Increase in pension expense | 2.0 |  |
Weighted-average discount rate | 4.50% |  |
Increase in projected benefit obligation | 19.9 |  |
Description of discount rate assumption | Lowering Snap-on's foreign discount rate assumption by 50 basis points |  |
Expected future employer contributions | $ 11.0 |  |

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- Definition For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Accumulated Benefit Obligation -URI http://asc.fasb.org/extlink&oid=6503844 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Definition An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Glossary Expected Long-Term Rate of Return on Plan Assets -URI http://asc.fasb.org/extlink&oid=6512013 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Definition Net increase or decrease in the plan benefit obligation during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Definition Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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