XML 76 R88.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2

Retirement Plans, Multiemployer Pension Plan and Defined Contribution Plans (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Retirement Plans [Abstract]
Aggregate contributions to the plans	$ 25,409,000	$ 22,392,000	$ 17,247,000
Seafarers Pension Trust [Member]
Retirement Plans [Abstract]
Pension contributions	$ 665,000	671,000
Contribution percentage to defined contribution plan	100.00%
Maximum contribution limit	5.00%
CPF [Member]
Retirement Plans [Abstract]
Pension contributions	$ 693,000	$ 736,000
Contribution percentage to defined contribution plan		95.00%

X

- Definition

Represents maximum entity's contribution limit to the concerned pension trust during the reporting period.

+ References

No definition available.

+ Details

Name:	kex_DefinedBenefitPlanMaximumContributionLimit
Namespace Prefix:	kex_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Refers to the defined contribution plan contribution as a percentage of the aggregate accumulated benefit obligation during the period.

+ References

No definition available.

+ Details

Name:	kex_DefinedContributionPlanContributionPercentageAggregateAccumulatedBenefitObligation
Namespace Prefix:	kex_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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

X

- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=118257860&loc=d3e4179-114921

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(iv)(01)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(ii)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e2709-114920

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920

+ Details

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

X

- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

+ Details

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

X

- Details

Name:	us-gaap_RetirementPlanTypeAxis=kex_SeafarersPensionTrustMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_RetirementPlanTypeAxis=kex_CentralPensionFundOfTheInternationalUnionOfOperatingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: