No definition available.

Name:	mic_SpecialUnitIssued
Namespace Prefix:	mic_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Special Unit, Outstanding

No definition available.

Name:	mic_SpecialUnitOutstanding
Namespace Prefix:	mic_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Maximum number of common units of ownership permitted to be issued by a limited liability company (LLC).

No definition available.

Name:	us-gaap_CommonUnitAuthorized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Number of common units issued of limited liability company (LLC).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Name:	us-gaap_CommonUnitIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Number of common units of ownership outstanding of a limited liability company (LLC).

No definition available.

Name:	us-gaap_CommonUnitOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Maximum number of preferred units of ownership permitted to be issued of a limited liability company (LLC).

No definition available.

Name:	us-gaap_LimitedLiabilityCompanyLLCPreferredUnitAuthorized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Number of preferred units issued of limited liability company (LLC).

Name:	us-gaap_LimitedLiabilityCompanyLLCPreferredUnitIssued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Number of preferred units of ownership outstanding of a limited liability company (LLC).

No definition available.

Name:	us-gaap_LimitedLiabilityCompanyLLCPreferredUnitOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

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