XML 88 R56.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Debt Commitments and Contingencies - Senior Unsecured Promissory Notes Payable (Details) | Jul. 20, 2016 USD ($) | Dec. 31, 2016 USD ($) debt_instrument_series | Dec. 31, 2015 USD ($)
--- | --- | --- | ---
Debt Instrument [Line Items] |  |  |
Debt |  | $ 390,000,000 | $ 365,000,000
Senior Unsecured Promissory Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt issuance period after effective date | 3 years |  |
Maximum aggregate principal amount outstanding | $ 200,000,000 |  |
Number of debt instrument series | debt_instrument_series |  | 2 |
Senior Unsecured Promissory Notes [Member] | Fixed Rate Notes Payable [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Term of debt (no later than 12 years) | 12 years |  |
Senior Unsecured Promissory Notes [Member] | Floating Rate Notes Payable [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Term of debt (no later than 12 years) | 10 years |  |
Senior Unsecured Promissory Notes [Member] | 2.00% Senior Unsecured Promissory Note Payable [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt |  | $ 40,000,000 | 0
Fixed interest rate per annum |  | 2.00% |
Senior Unsecured Promissory Notes [Member] | 2.45% Senior Unsecured Promissory Note Payable [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt |  | $ 35,000,000 | $ 0
Fixed interest rate per annum |  | 2.45% |

X
- Definition Debt Instrument, Debt Issuance Allowable Period + References No definition available. + Details
Name: | fast_DebtInstrumentDebtIssuanceAllowablePeriod
Namespace Prefix: | fast_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt Instrument, Maximum Face Amount Allowable + References No definition available. + Details
Name: | fast_DebtInstrumentMaximumFaceAmountAllowable
Namespace Prefix: | fast_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Debt Instrument, Number of Debt Instrument Series + References No definition available. + Details
Name: | fast_DebtInstrumentNumberofDebtInstrumentSeries
Namespace Prefix: | fast_
Data Type: | xbrli:integerItemType
Balance Type: | na
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 Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. 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 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 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 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_LongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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

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

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fast_A2.00SeniorPromissoryNotePayableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fast_A2.45SeniorUnsecuredPromissoryNotePayableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |