Multiemployer Plan Liabilities

No definition available.

Name:	mpsx_MultiemployerPlanLiabilities
Namespace Prefix:	mpsx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the amount of current portion of multi employer plan liability.

+ References

No definition available.

+ Details

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Namespace Prefix:	mpsx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Multiemployer Plans, Withdrawal Obligation Annual Required Installment Payment

+ References

No definition available.

+ Details

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Namespace Prefix:	mpsx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Multiemployer Plans, Withdrawal Obligation Monthly Required Installment Payment

+ References

No definition available.

+ Details

Name:	mpsx_MultiemployerPlansWithdrawalObligationMonthlyRequiredInstallmentPayment
Namespace Prefix:	mpsx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of required monthly installments for the obligation recognized by withdrawing from a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

+ References

No definition available.

+ Details

Name:	mpsx_MultiemployerPlansWithdrawalObligationNumberOfRequiredMonthlyInstallments
Namespace Prefix:	mpsx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Accumulated Benefit Obligation
-URI http://asc.fasb.org/extlink&oid=6503844

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

+ Details

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

- Definition

The increase in the fair value of plan assets from contributions made by the employer.

+ References

+ Details

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

- Definition

The funded status is measured as the difference between the fair value of plan assets and the benefit obligation. Will normally be the same as the net Defined Benefit Plan, Amounts Recognized in Balance Sheet, Total.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=21915240&loc=d3e1703-114919

+ Details

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

- Definition

The total amount of net periodic benefit cost for defined benefit plans for the period. Periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (h)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (j)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

+ Details

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

- Definition

Amount of employer's best estimate of contributions expected to be paid to the plan in the current remaining fiscal period.

+ References

No definition available.

+ Details

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

- 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_DefinedContributionPlanDisclosureLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_MultiemployerPlanTypeAxis=mpsx_PacePlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MultiemployerPlanTypeAxis=mpsx_GccMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LossContingenciesByNatureOfContingencyAxis=us-gaap_WithdrawalFromMultiemployerDefinedBenefitPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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- Details

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Employee Benefit Plans (Details) $ in Thousands	1 Months Ended	11 Months Ended	12 Months Ended
Employee Benefit Plans (Details) $ in Thousands	Aug. 14, 2013 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2016 USD ($) installment	Jun. 30, 2015 USD ($)
Defined Contribution Plan Disclosure
Contributions to the Plan			$ 7,301	$ 7,920
Current liability of multi employer plans			(323)
PACE Fund
Defined Contribution Plan Disclosure
Multiemployer obligation monthly payments			45
Multiemployer obligation payment per annum			539
GCC-IBT Fund
Defined Contribution Plan Disclosure
Multiemployer obligation monthly payments			$ 31
Multiemployer plan, number of required monthly installments \| installment			240
Multiemployer obligation payment per annum			$ 378
Withdrawal from Multiemployer Defined Benefit Plan
Defined Contribution Plan Disclosure
Long-term liability			8,622	8,923
Pension Plan
Defined Contribution Plan Disclosure
Contributions to the Plan			13,360	14,447
Accumulated benefit obligation			549,311	562,230
Estimated contribution to pension plan			5,290
Unfunded benefit obligation			16,779	8,986
Net periodic benefit cost		$ 478	(128)	837
Other Post-Employment Obligations \| CANADA
Defined Contribution Plan Disclosure
Estimated contribution to pension plan			13
Unfunded benefit obligation			1,968	2,267
Net periodic benefit cost			$ 113	$ 106
Predecessor
Defined Contribution Plan Disclosure
Contributions to the Plan	$ 295	$ 3,927
Predecessor \| Pension Plan
Defined Contribution Plan Disclosure
Net periodic benefit cost	$ 38