Business acquisition amount of working capital settlement.

No definition available.

Name:	knd_BusinessAcquisitionAmountOfWorkingCapitalSettlement
Namespace Prefix:	knd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Number of beds in hospital.

+ References

No definition available.

+ Details

Name:	knd_NumberOfBedsInHospital
Namespace Prefix:	knd_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of inpatient rehabilitation hospitals.

+ References

No definition available.

+ Details

Name:	knd_NumberOfInpatientRehabilitationHospitals
Namespace Prefix:	knd_
Data Type:	xbrli:integerItemType
Balance Type:	na
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_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460

+ Details

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

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585

+ Details

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

- Details

Name:	us-gaap_BusinessAcquisitionAxis=knd_GentivaMergerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=knd_AcquisitionCenterreMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Other Acquisitions - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($) Hospital Bed	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Business Acquisition [Line Items]
Acquisition related costs	$ 2.1	$ 18.0	$ 109.1
Gentiva Merger
Business Acquisition [Line Items]
Acquisition related costs	104.2	10.8
Acquisition Centerre
Business Acquisition [Line Items]
Purchase price, cash consideration		$ 195.0
Cash paid for working capital settlement	$ 4.0
Total inpatient rehabilitation hospitals \| Hospital	11
Number of beds in hospital \| Bed	614