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Background (Details)	Mar. 31, 2014 company
Background Disclosure [Abstract]
Number of publicly traded companies	2

X

- Definition

None. No documentation exists for this element.

+ References

No definition available.

+ Details

Name:	htz_BackgroundDisclosureAbstract
Namespace Prefix:	htz_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of Publicly Traded Companies

+ References

No definition available.

+ Details

Name:	htz_NumberofPubliclyTradedCompanies
Namespace Prefix:	htz_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant