XML 101 R83.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Short-term and Long-term Debt - Short-term and Long-term Debt (Parenthetical) (Detail) | 12 Months Ended |
--- | --- | ---
Dec. 30, 2017 | Dec. 31, 2016 | Feb. 15, 2017
5.50% Unsecured Notes Due 2017 [Member] |  |  |
Schedule Of Debt Instruments [Line Items] |  |  |
Unsecured notes, interest rate | 5.50% | 5.50% |
Unsecured notes, maturity year | 2017 | 2017 |
4.25% Unsecured Notes Due 2018 [Member] |  |  |
Schedule Of Debt Instruments [Line Items] |  |  |
Unsecured notes, interest rate | 4.25% | 4.25% |
Unsecured notes, maturity year | 2018 | 2018 |
6.70% Unsecured Notes Due 2019 [Member] |  |  |
Schedule Of Debt Instruments [Line Items] |  |  |
Unsecured notes, interest rate | 6.70% | 6.70% |
Unsecured notes, maturity year | 2019 | 2019 |
6.125% Unsecured Notes Due 2021 [Member] |  |  |
Schedule Of Debt Instruments [Line Items] |  |  |
Unsecured notes, interest rate | 6.125% | 6.125% |
Unsecured notes, maturity year | 2021 | 2021 |
3.25% Unsecured Notes Due 2027 [Member] |  |  |
Schedule Of Debt Instruments [Line Items] |  |  |
Unsecured notes, interest rate | 3.25% | 3.25% | 3.25%
Unsecured notes, maturity year | 2027 | 2027 |

X
- Definition Debt instrument maturity year. + References No definition available. + Details
Name: | sna_DebtInstrumentMaturityYear
Namespace Prefix: | sna_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule Of Debt Instruments [Line Items] + References No definition available. + Details
Name: | sna_ScheduleOfDebtInstrumentsLineItems
Namespace Prefix: | sna_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentAxis=sna_FivePointFiveZeroPercentageUnsecuredNotesDueTwoThousandSeventeenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=sna_FourPointTwoFivePercentageUnsecuredNotesDueTwoThousandEighteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=sna_SixPointSevenZeroPercentageUnsecuredNotesDueTwoThousandNineteenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=sna_SixPointOneTwoFivePercentageUnsecuredNotesDueTwoThousandTwentyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=sna_ThreePointTwoFivePercentageUnsecuredNotesDueTwoThousandTwentySevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |