Line of Credit Facility, Covenant Terms, Fixed Charge Coverage Ratio, Minimum

No definition available.

Name:	hri_LineofCreditFacilityCovenantTermsFixedChargeCoverageRatioMinimum
Namespace Prefix:	hri_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of Credit Facility, Covenant Terms, Maximum Payment Allowed for Cash Dividends

+ References

No definition available.

+ Details

Name:	hri_LineofCreditFacilityCovenantTermsMaximumPaymentAllowedforCashDividends
Namespace Prefix:	hri_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Line of Credit Facility, Percentage Ratio of Interest Rate to Prevailing Base Lending Rates

+ References

No definition available.

+ Details

Name:	hri_LineofCreditFacilityPercentageRatioofInterestRatetoPrevailingBaseLendingRates
Namespace Prefix:	hri_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line of Credit Facility, Remaining Borrowing Capacity Under Borrowing Base Limitation

+ References

No definition available.

+ Details

Name:	hri_LineofCreditFacilityRemainingBorrowingCapacityUnderBorrowingBaseLimitation
Namespace Prefix:	hri_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: 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(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: 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(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=hri_ABLCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=hri_SeniorSecuredRevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=hri_OtherBorrowingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Debt - ABL Credit Facility & Other Borrowings (Details) - Line of Credit		6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)	Jun. 30, 2016 USD ($)
ABL Credit Facility
Line of Credit Facility [Line Items]
Fixed charge coverage ratio (not less than)	1
Letter of credit outstanding	$ 0	$ 0
ABL Credit Facility \| Senior Secured Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity				$ 1,750,000,000
Debt, gross	1,005,000,000	1,005,000,000	$ 910,000,000
Maximum payment of dividends (not to exceed)	200,000,000
Remaining Capacity	720,500,000	720,500,000
Availability Under Borrowing Base Limitation	720,500,000	720,500,000
ABL Credit Facility \| Revolving Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity				350,000,000
ABL Credit Facility \| Letter of Credit
Line of Credit Facility [Line Items]
Maximum borrowing capacity				$ 250,000,000
Remaining Capacity	225,500,000	225,500,000
Letter of credit outstanding	24,500,000	24,500,000
Other borrowings
Line of Credit Facility [Line Items]
Maximum borrowing capacity	10,000,000.0	$ 10,000,000.0
Line of credit facility, percentage ratio of interest rate to prevailing base lending rates		110.00%
Debt, gross	500,000	$ 500,000	$ 0
Remaining Capacity	$ 9,500,000	$ 9,500,000