| **Long-Term Debt (Schedule of Long-Term Debt) (Details) (USD $)** | Nov. 29, 2014                                                                                   | Nov. 30, 2013                                                                                     | Nov. 22, 2013                                                                     |
|-------------------------------------------------------------------|-------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------|
| **Debt Instrument [Line Items]**                                  |                                                                                            |                                                                                              |                                                                              |
| Long-term debt                                                    | $ 411,563,000us-gaap_LongTermDebt                                                               | $ 166,636,000us-gaap_LongTermDebt                                                                 |                                                                              |
| Current portion of long-term debt                                 | 233,000us-gaap_LongTermDebtCurrent                                                              | 50,223,000us-gaap_LongTermDebtCurrent                                                             |                                                                              |
| Long-term debt, less current portion                              | 411,330,000us-gaap_LongTermDebtNoncurrent                                                       | 116,413,000us-gaap_LongTermDebtNoncurrent                                                         |                                                                              |
| Industrial Revenue Bonds [Member]                                 |                                                                                            |                                                                                              |                                                                              |
| **Debt Instrument [Line Items]**                                  |                                                                                            |                                                                                              |                                                                              |
| Long-term debt                                                    | 15,820,000us-gaap_LongTermDebt/ us-gaap_LongtermDebtTypeAxis= us-gaap_BondsMember               | 15,820,000us-gaap_LongTermDebt/ us-gaap_LongtermDebtTypeAxis= us-gaap_BondsMember                 |                                                                              |
| Weighted average interest rate                                    | 0.22%us-gaap_DebtWeightedAverageInterestRate/ us-gaap_LongtermDebtTypeAxis= us-gaap_BondsMember | 0.23%us-gaap_DebtWeightedAverageInterestRate/ us-gaap_LongtermDebtTypeAxis= us-gaap_BondsMember   |                                                                              |
| Other long-term debt [Member]                                     |                                                                                            |                                                                                              |                                                                              |
| **Debt Instrument [Line Items]**                                  |                                                                                            |                                                                                              |                                                                              |
| Long-term debt                                                    | 743,000us-gaap_LongTermDebt/ us-gaap_LongtermDebtTypeAxis= us-gaap_LoansPayableMember           | 816,000us-gaap_LongTermDebt/ us-gaap_LongtermDebtTypeAxis= us-gaap_LoansPayableMember             |                                                                              |
| Revolving Credit Facility [Member]                                |                                                                                            |                                                                                              |                                                                              |
| **Debt Instrument [Line Items]**                                  |                                                                                            |                                                                                              |                                                                              |
| Long-term debt                                                    | 0us-gaap_LongTermDebt/ us-gaap_CreditFacilityAxis= us-gaap_RevolvingCreditFacilityMember        | 50,000,000us-gaap_LongTermDebt/ us-gaap_CreditFacilityAxis= us-gaap_RevolvingCreditFacilityMember |                                                                              |
| Term Loan [Member]                                                |                                                                                            |                                                                                              |                                                                              |
| **Debt Instrument [Line Items]**                                  |                                                                                            |                                                                                              |                                                                              |
| Long-term debt                                                    | $ 395,000,000us-gaap_LongTermDebt/ us-gaap_CreditFacilityAxis= clc_TermLoanMember               | $ 100,000,000us-gaap_LongTermDebt/ us-gaap_CreditFacilityAxis= clc_TermLoanMember                 | $ 100,000,000us-gaap_LongTermDebt/ us-gaap_CreditFacilityAxis= clc_TermLoanMember |

| X                                                                                                                                                           |
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| X                                                                                                                                                                                                                                                                        |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Weighted average interest rate of debt outstanding.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. 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 SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7Reference 2: 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=d3e13212-122682Reference 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=d3e534808-122878Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5Reference 6: 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
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of long-term debt, after unamortized discount or premium, scheduled 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 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). 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=d3e13212-122682Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5
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| X                                                                                                                                     |
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| X                                                                                                                                                        |
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| X                                                                                                                                        |
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| X                                                                                                                                               |
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