Contingencies (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended
Jan. 31, 2011	Dec. 31, 2010	Mar. 31, 2012	Sep. 30, 2010
Contingencies [Abstract]
Payments of contractual and other claims	$ 5.0
Early estimates of the settlement and obligation amount	5.0
Accrued loss contingency		2.5	4.4	7.5
Maximum possible return of proposed settlement			1.5
Loss contingency, settlement agreement, consideration			$ 4.4

Amount of consideration the entity has agreed to pay to settle a legal matter.

No definition available.

Name:	rah_LossContingencySettlementAgreementConsideration1
Namespace Prefix:	rah_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum amount of litigation settlement that could be returned to the Company depending upon the final number of participating plaintiffs.

+ References

No definition available.

+ Details

Name:	rah_MaximumReturnOfLitigationSettlement
Namespace Prefix:	rah_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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

- Definition

The portion of the carrying amount as of the balance sheet date of the combined total of loss contingency liabilities which is expected to be resolved within one year or the normal operating cycle, if longer.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9, 10, 11, 12

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14326-108349

+ Details

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

- Definition

The payments made in the period which reduced loss contingency liabilities.

+ References

+ Details

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

- Definition

The charge against earnings in the period to increase loss contingency liabilities, net of any adjustments to reduce previously estimated charges.

+ References

+ Details

Name:	us-gaap_LossContingencyAccrualCarryingValueProvision
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration