Business Acquisition Additional Consideration

No definition available.

Name:	klx_BusinessAcquisitionAdditionalConsideration
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of intangible assets including goodwill, acquired at the acquisition date.

+ References

No definition available.

+ Details

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Namespace Prefix:	klx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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- 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

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Data Type:	xbrli:stringItemType
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- Definition

This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

+ Details

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

- Definition

This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

+ References

+ Details

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

- Definition

Amount of assets acquired at the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

+ Details

Name:	us-gaap_Goodwill
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

+ References

Reference 1: 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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

+ Details

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- Details

Name:	us-gaap_BusinessAcquisitionAxis=klx_BlueDotMember
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- Details

Name:	us-gaap_BusinessAcquisitionAxis=klx_Acquisition1Member
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- Details

Name:	us-gaap_BusinessAcquisitionAxis=klx_CornellMember
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- Details

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Business Combinations (Details) - USD ($) $ in Millions	1 Months Ended				3 Months Ended	12 Months Ended
Business Combinations (Details) - USD ($) $ in Millions	Jun. 30, 2014	Apr. 30, 2014	Feb. 28, 2014	Jan. 31, 2014	Apr. 30, 2014	Jan. 31, 2016	Dec. 31, 2014	Dec. 31, 2013	Jan. 31, 2015
Business Combinations
Purchase price, net of cash acquired						$ 4.3	$ 513.8	$ 117.5
Goodwill						$ 954.9	1,328.7	1,069.8	$ 1,286.5
Minimum
Business Combinations
Useful life (years)						4 years
Maximum
Business Combinations
Useful life (years)						30 years
Blue Dot
Business Combinations
Purchase price, net of cash acquired								114.0
Identified intangible assets including goodwill								70.6
Identified intangibles								33.2
Goodwill								37.4
Vision Oil Tools, LLC
Business Combinations
Purchase price, net of cash acquired		$ 175.7
Additional cash payment to be made on acquisition					$ 35.0
Identified intangibles						$ 50.1
Goodwill						69.8
Cornell
Business Combinations
Purchase price, net of cash acquired	$ 128.2
Additional cash payment to be made on acquisition					$ 56.0
Identified intangibles						33.6
Goodwill						57.5
Marcellus/Utica basin
Business Combinations
Purchase price, net of cash acquired		$ 44.0
LT Energy Services
Business Combinations
Purchase price, net of cash acquired				$ 102.5
Wildcat Wireline LLC
Business Combinations
Purchase price, net of cash acquired			$ 153.4
Identified intangibles						37.7
Goodwill						83.7
2013 and 2014 Acquisitions
Business Combinations
Acquisitions revenues							385.5	23.5
Acquisition net earnings							34.9	$ (1.1)
2014 Acquisitions
Business Combinations
Identifiable assets							431.3
Identified intangibles						162.0	162.0
Goodwill						269.3	$ 269.3
2013 Acquisitions
Business Combinations
Identified intangibles						33.2
Goodwill						$ 37.4
Customer contracts and relationships
Business Combinations
Useful life (years)								20 years
Customer contracts and relationships \| Minimum
Business Combinations
Useful life (years)						8 years
Customer contracts and relationships \| Maximum
Business Combinations
Useful life (years)						30 years
Customer contracts and relationships \| 2014 Acquisitions
Business Combinations
Useful life (years)							20 years
Covenants not to compete
Business Combinations
Useful life (years)								5 years
Covenants not to compete \| Minimum
Business Combinations
Useful life (years)						4 years
Covenants not to compete \| Maximum
Business Combinations
Useful life (years)						5 years
Covenants not to compete \| 2014 Acquisitions
Business Combinations
Useful life (years)							5 years