Represents the aggregate principal amount of debt repurchased including accrued and unpaid interest.

No definition available.

Name:	mni_AggregateAmountOfDebtRepurchasedIncludingAccruedAndUnpaidInterest
Namespace Prefix:	mni_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the extension period to the original debt maturity date.

+ References

No definition available.

+ Details

Name:	mni_DebtInstrumentExtensionToMaturityTerm
Namespace Prefix:	mni_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the aggregate amount of consideration received or receivable to the entity and co-investee for the disposal of assets and liabilities.

+ References

No definition available.

+ Details

Name:	mni_DisposalGroupAggregateConsiderationIncludingCoInvestee
Namespace Prefix:	mni_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

This item represents the amount of net sales proceeds received on disposal of an equity method investment which does not include transaction fees .

+ References

No definition available.

+ Details

Name:	mni_EquityMethodInvestmentNetOfTransactionCostsProceeds
Namespace Prefix:	mni_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

This item represents the amount of net sales proceeds received on disposal of an equity method investment that is held in escrow.

+ References

No definition available.

+ Details

Name:	mni_EquityMethodInvestmentNetSalesProceedsHeldInEscrow
Namespace Prefix:	mni_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the amount of sales proceeds received on disposal of an equity method investment, net of transaction costs and taxes.

+ References

No definition available.

+ Details

Name:	mni_EquityMethodInvestmentProceedsNetOfTransactionCostsAndTax
Namespace Prefix:	mni_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the maximum borrowing capacity of the entity under its line of credit facilities prior to amendment.

+ References

No definition available.

+ Details

Name:	mni_LineOfCreditFacilityMaximumBorrowingCapacityBeforeAmendment
Namespace Prefix:	mni_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the maximum threshold amount of debt to be included in the asset purchase offer.

+ References

No definition available.

+ Details

Name:	mni_MinimumThresholdOfDebtIncludedInAssetsPurchaseOffer
Namespace Prefix:	mni_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Offer to purchase, with cash, outstanding debt.

+ References

No definition available.

+ Details

Name:	mni_OfferToPurchaseOutstandingDebt
Namespace Prefix:	mni_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the percentage of aggregate undrawn amount of letter of credit required for cash collateral.

+ References

No definition available.

+ Details

Name:	mni_PercentageOfAggregateUndrawnAmountOfLetterOfCreditRequiredForCashCollateral
Namespace Prefix:	mni_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the period within which reinvestment of after-tax proceeds not made from closing of the transactions.

+ References

No definition available.

+ Details

Name:	mni_PeriodWithinWhichReinvestmentOfAfterTaxProceedsNotMadeFromClosingOfTransaction
Namespace Prefix:	mni_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the term of agreement.

+ References

No definition available.

+ Details

Name:	mni_TermOfAgreement
Namespace Prefix:	mni_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 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(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

- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ 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(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Cash dividends or other distributions received from unconsolidated subsidiaries, certain corporate joint ventures, and certain noncontrolled corporations that are returns of capital. Excludes dividends or distributions from equity method investments classified as operating activities.

+ References

No definition available.

+ Details

Name:	us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

+ Details

Name:	us-gaap_ProceedsFromSaleOfEquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_SubsequentEventLineItems
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Data Type:	xbrli:stringItemType
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SUBSEQUENT EVENT (Details) (USD $)	9 Months Ended				0 Months Ended					0 Months Ended		0 Months Ended			0 Months Ended			0 Months Ended
SUBSEQUENT EVENT (Details) (USD $)	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014 9.00% senior secured notes due in 2022	Sep. 28, 2014 5.750% notes due in 2017	Oct. 01, 2014 Classified Ventures LLC	Apr. 01, 2014 Classified Ventures LLC	Nov. 05, 2014 Subsequent events Forecast	Oct. 21, 2014 Subsequent events Revolving credit facility	Oct. 21, 2014 Subsequent events Revolving credit facility	Oct. 21, 2014 Subsequent events Letter of credit	Oct. 21, 2014 Subsequent events Letter of credit	Oct. 01, 2014 Subsequent events 9.00% senior secured notes due in 2022	Oct. 14, 2014 Subsequent events 9.00% senior secured notes due in 2022	Oct. 01, 2014 Subsequent events 9.00% senior secured notes due in 2022	Nov. 05, 2014 Subsequent events 9.00% senior secured notes due in 2022 Forecast	Nov. 05, 2014 Subsequent events 9.00% senior secured notes due in 2022 Forecast	Nov. 05, 2014 Subsequent events 5.750% notes due in 2017 Forecast	Oct. 01, 2014 Subsequent events Affiliate Agreement Cars com Products and Services	Oct. 01, 2014 Subsequent events Classified Ventures LLC
Subsequent Event
Total consideration					$ 2,500,000,000														$ 2,500,000,000
Cash proceeds, net of transaction costs																			631,800,000
Cash proceeds, net of transactions costs and taxes																			406,000,000
Net proceeds to be held in escrow																			25,600,000
Distributions from equity investments	1,444,000	3,780,000				146,900,000													6,000,000
Proceeds on sale of business					631,800,000														606,200,000
Agreement term																		5 years
Amount of debt to be repurchased																259,400,000	150,000,000
Aggregate principal amount of debt to be repurchased, including accrued and unpaid interest							459,500,000
Maximum threshold of debt included in current asset purchase offer															95,500,000
Interest rate (as a percent)			9.00%	5.75%									9.00%	9.00%		9.00%	5.75%
Period within which reinvestment of after-tax proceeds not made from closing of the transactions												365 days
Offer to purchase outstanding debt													406,000,000
Maximum borrowing capacity, before amendment									75,000,000
Maximum borrowing capacity									$ 65,000,000		$ 35,000,000
Extension period								2 years
Percentage of aggregate undrawn amount of letter of credit required to provide cash collateral										101.00%