Represents the amounts due related to intercompany transactions and cash management.

No definition available.

Name:	uatc_IntercompanyTransactionsAndCashManagementReceivables
Namespace Prefix:	uatc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Represents the fair value renewal options term.

+ References

No definition available.

+ Details

Name:	uatc_OperatingLeaseFairValueRenewalOptionsTerm
Namespace Prefix:	uatc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the number of theatres which were subject to the lease.

+ References

No definition available.

+ Details

Name:	uatc_OperatingLeaseNumberOfProperties
Namespace Prefix:	uatc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of one-year fair value renewal options.

+ References

No definition available.

+ Details

Name:	uatc_OperatingLeaseNumberOfTimesFairValueRenewalOptions
Namespace Prefix:	uatc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the original base term of properties which are subject to lease.

+ References

No definition available.

+ Details

Name:	uatc_OperatingLeaseOriginalBaseTerm
Namespace Prefix:	uatc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the renewal extension of the lease of properties which are subject to lease.

+ References

No definition available.

+ Details

Name:	uatc_OperatingLeaseRenewalExtensionPeriodOfLease
Namespace Prefix:	uatc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of incremental annual minimum lease payments per digital projection system that the lessee can be required to make, upon certain conditions, beginning at six and a half years from the effective date of an agreement classified as an operating lease.

+ References

No definition available.

+ Details

Name:	uatc_OperatingLeasesIncrementalAnnualMinimumRentUponCertainConditions
Namespace Prefix:	uatc_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the term of sublease.

+ References

No definition available.

+ Details

Name:	uatc_OperatingSubleaseTerm
Namespace Prefix:	uatc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the period prior to the end of the term of the respective exhibitor services agreements that the right of first refusal commences for the related party.

+ References

No definition available.

+ Details

Name:	uatc_RelatedPartyTransactionExhibitorServicesAgreementRightOfFirstRefusalCommencementPeriod
Namespace Prefix:	uatc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the extended term of exhibitor services agreements.

+ References

No definition available.

+ Details

Name:	uatc_RelatedPartyTransactionExhibitorServicesAgreementsExtendedTerm
Namespace Prefix:	uatc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the period over which the related party has the right of first refusal to certain conditions as stated in the exhibitor services agreements.

+ References

No definition available.

+ Details

Name:	uatc_RelatedPartyTransactionExhibitorServicesAgreementsPeriodCoveredUnderRightOfFirstRefusal
Namespace Prefix:	uatc_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the increase (decrease) in related party receivables due to the timing of intercompany cash collections and disbursements.

+ References

No definition available.

+ Details

Name:	uatc_RelatedPartyTransactionIncreaseDecreaseinReceivables
Namespace Prefix:	uatc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(k)(1))

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph k

-Subparagraph 1

-Article 4

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 3

-Article 7

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.3)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.10(3))

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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

- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 323

-SubTopic 10

-Section 50

-Paragraph 3

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717

+ Details

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

- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 850

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

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

- Details

Name:	us-gaap_RelatedPartyTransactionLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	dei_LegalEntityAxis=uatc_RegalCinemasIncMember
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- Details

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- Details

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Related Party Transactions Narrative (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended			0 Months Ended
	Jan. 01, 2015	Dec. 26, 2013	Dec. 27, 2012	Mar. 31, 2014
Related Party Transaction
Related party receivables	$ 78.5us-gaap_DueFromRelatedParties	$ 89.1us-gaap_DueFromRelatedParties
Intercompany transactions and cash management receivables	68.7	79.3
Regal Cinemas Inc
Related Party Transaction
Management fee expenses	5.5	5.9	6.1
United Artists Properties I Corp
Related Party Transaction
Related party receivables	9.8	9.8
Number of theatres leased	3
Original base term (in years)	15 years
Renewal extension period of lease (in years)	10 years
Decrease in related party receivable	10.6
Regal Cinemas Inc \| Digital Cinema Implementation Partners, LLC [Member]
Related Party Transaction
Sublease term (in years)	12 years
Number of times fair value renewal options (in renewal options)	10
Fair value renewal options term (in years)	1 year
Incremental annual minimum rent upon certain conditions (in dollars per Digital Projection System)	1,000			2,000
Total rent	$ 0.5	$ 1.1
Regal Cinemas Inc \| National Cine Media Llc
Related Party Transaction
Exhibitor services agreements extended term (in years)	30 years
Exhibitor services agreements period covered under right of first refusal (in years)	5 years
Exhibitor services agreement right of first refusal commencement period (in years)	1 year
AC JV, LLC \| Regal Cinemas Inc, AMC Entertainment Inc and Cinemark [Member]
Related Party Transaction
Ownership percentage	32.00%
AC JV, LLC \| National Cine Media
Related Party Transaction
Ownership percentage	4.00%