XML 160 R101.htm IDEA: XBRL DOCUMENT v2.4.0.6

Pension Plans (Summary Of Target Allocation And Weighted-Average Asset Allocation By Asset Category And Fair Value Of Plan Assets) (Detail) (USD $) In Millions, unless otherwise specified				12 Months Ended		12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011	Dec. 29, 2012 Domestic Pension Plans [Member]	Dec. 31, 2011 Domestic Pension Plans [Member]	Dec. 29, 2012 Foreign Pension Plans [Member]		Dec. 31, 2011 Foreign Pension Plans [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Equity securities, Target allocation				48.00%		33.00%	[1]
Debt securities and cash, Target allocation				34.00%		46.00%	[1]
Real estate and other real assets, Target allocation				8.00%
Insurance contracts and Hedge funds, Target allocation						21.00%
Hedge funds, Target allocation				10.00%
Total, Target allocation				100.00%		100.00%
Equity securities, Actual weighted-average asset allocation				48.00%	46.00%	35.00%	[1]	31.00%	[1]
Debt securities and cash, Actual weighted-average asset allocation				37.00%	38.00%	47.00%	[1]	53.00%	[1]
Real estate and other real assets, Actual weighted-average asset allocation				6.00%	6.00%
Insurance contracts and Hedge funds, Actual weighted-average asset allocation						18.00%		16.00%
Hedge funds, Actual weighted-average asset allocation				9.00%	10.00%
Total, Actual weighted-average asset allocation				100.00%	100.00%	100.00%		100.00%
Fair value of plan assets	$ 964.0	$ 846.1	$ 793.0	$ 830.6	$ 720.8	$ 133.4		$ 125.3
[1] Includes commingled funds - multi-strategy

X

- Definition

Defined benefit plan, debt securities and cash

+ References

No definition available.

+ Details

Name:	sna_DefinedBenefitPlanDebtSecuritiesAndCash
Namespace Prefix:	sna_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Defined Benefit Plan Hedge Funds

+ References

No definition available.

+ Details

Name:	sna_DefinedBenefitPlanHedgeFunds
Namespace Prefix:	sna_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Defined Benefit Plan Insurance Contracts And Hedge Funds

+ References

No definition available.

+ Details

Name:	sna_DefinedBenefitPlanInsuranceContractsAndHedgeFunds
Namespace Prefix:	sna_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Defined benefit plan, real estate and other real assets

+ References

No definition available.

+ Details

Name:	sna_DefinedBenefitPlanRealEstateAndOtherRealAssets
Namespace Prefix:	sna_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Defined benefit plan, target allocation percentage of assets

+ References

No definition available.

+ Details

Name:	sna_DefinedBenefitPlanTargetAllocationPercentageOfAssets
Namespace Prefix:	sna_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Defined benefit plan, target allocation percentage of assets, debt securities and cash

+ References

No definition available.

+ Details

Name:	sna_DefinedBenefitPlanTargetAllocationPercentageOfAssetsDebtSecuritiesAndCash
Namespace Prefix:	sna_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Defined Benefit Plan Target Allocation Percentage Of Assets Hedge Funds

+ References

No definition available.

+ Details

Name:	sna_DefinedBenefitPlanTargetAllocationPercentageOfAssetsHedgeFunds
Namespace Prefix:	sna_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Defined Benefit Plan Target Allocation Percentage Of Assets Insurance Contracts And Hedge Funds

+ References

No definition available.

+ Details

Name:	sna_DefinedBenefitPlanTargetAllocationPercentageOfAssetsInsuranceContractsAndHedgeFunds
Namespace Prefix:	sna_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Defined benefit plan, target allocation percentage of assets, real estate and other real assets

+ References

No definition available.

+ Details

Name:	sna_DefinedBenefitPlanTargetAllocationPercentageOfAssetsRealEstateAndOtherRealAssets
Namespace Prefix:	sna_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Defined Benefits Plan Equity Securities

+ References

No definition available.

+ Details

Name:	sna_DefinedBenefitsPlanEquitySecurities
Namespace Prefix:	sna_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	sna_PensionPlansPostretirementAndOtherEmployeeBenefitsLineItems
Namespace Prefix:	sna_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Section 35

-Paragraph 50

-URI http://asc.fasb.org/extlink&oid=6867990&loc=d3e12355-114930



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 87

-Paragraph 49

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph d(iv)(b)(i)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

+ Details

Name:	us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Target allocation of investments of this type to total plan assets presented on a weighted average basis.

+ 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 (d)(i)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (c)(i)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2446-114920

+ Details

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

X

- Definition

Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e2446-114920



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (d)(1)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph d(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Name:	us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant