XML 78 R62.htm IDEA: XBRL DOCUMENT
v3.10.0.1

LONG-TERM DEBT - SCHEDULE OF LONG-TERM DEBT (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017 | May 31, 2017 | May 31, 2016 | Jun. 30, 2015
--- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt, gross | $ 2,193 | $ 2,310 |  |  |
Long-Term Debt, Gross, Fair Value Disclosure | 2,159 | 2,394 |  |  |
Other | 49 | 84 |  |  |
Other Long-Term Debt, Fair Value Disclosure | 49 | 84 |  |  |
Less current maturities | (81) | (39) |  |  |
Long-Term Debt, Current Maturities, Fair Value Disclosure | (81) | (39) |  |  |
Debt issuance costs and discounts, net of amortization | (22) | (23) |  |  |
Debt Instrument, Unamortized, Discount (Premium) And Debt Issuance Costs, Net, Fair Value | (22) | (23) |  |  |
Long-term debt (less current maturities and debt issuance costs and discounts) | 2,090 | 2,248 |  |  |
Long-Term Debt, Excluding Current Maturities, Fair Value Disclosure | 2,056 | 2,332 |  |  |
British pound term loan [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt, gross | 174 | 195 |  |  |
Long-term Debt, Fair Value | 174 | 195 |  |  |
Euro term loan [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt, gross | 126 | 132 |  |  |
Long-term Debt, Fair Value | 126 | 132 |  |  |
Canadian dollar revolving credit facility [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt, gross | 44 | 99 |  |  |
Long-term Debt, Fair Value | 44 | 99 |  |  |
Unsecured Senior Notes, 4.60% [Member] | Senior notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt, gross | 1,000 | 1,000 |  |  |
Long-term Debt, Fair Value | $ 1,026 | 1,089 |  |  |
Stated interest rate | 4.60% |  |  |  | 4.60%
Unsecured Senior Notes, 3.75% [Member] | Senior notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt, gross | $ 400 | 400 |  |  |
Long-term Debt, Fair Value | $ 357 | 384 |  |  |
Stated interest rate | 3.75% |  |  | 3.75% |
Unsecured Senior Notes, 4.20% [Member] | Senior notes [Member] |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Long-term debt, gross | $ 400 | 400 |  |  |
Long-term Debt, Fair Value | $ 383 | $ 411 |  |  |
Stated interest rate | 4.20% |  | 4.20% |  |

X
- Definition Debt Instrument, Unamortized, Discount (Premium) And Debt Issuance Costs, Net, Fair Value + References No definition available. + Details
Name: | gww_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNetFairValue
Namespace Prefix: | gww_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Long-Term Debt, Current Maturities, Fair Value Disclosure + References No definition available. + Details
Name: | gww_LongTermDebtCurrentMaturitiesFairValueDisclosure
Namespace Prefix: | gww_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Long-Term Debt, Excluding Current Maturities, Fair Value Disclosure + References No definition available. + Details
Name: | gww_LongTermDebtExcludingCurrentMaturitiesFairValueDisclosure
Namespace Prefix: | gww_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Long-Term Debt, Gross, Fair Value Disclosure + References No definition available. + Details
Name: | gww_LongTermDebtGrossFairValueDisclosure
Namespace Prefix: | gww_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Other Long-Term Debt, Fair Value Disclosure + References No definition available. + Details
Name: | gww_OtherLongTermDebtFairValueDisclosure
Namespace Prefix: | gww_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + 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)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of unamortized debt discount (premium) and debt issuance costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 + Details
Name: | us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + 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 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebtCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
Name: | us-gaap_LongTermDebtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + 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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebtNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of long-term debt classified as other. + 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)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_OtherLongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=gww_BritishPoundDenominatedTermLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=gww_EuroDenominatedBankTermLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=gww_CanadianDollarRevolvingCreditFacilityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gww_UnsecuredSeniorNotes4.60Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gww_UnsecuredSeniorNotes3.75Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=gww_UnsecuredSeniorNotes4.20Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |