Taxonomy Viewer

Name	TransportationAdvanceTicketArrangementMember
Namespace	http://fasb.org/us-gaap/2020-01-31
Prefix	us-gaap
Data type	nonnum:domainItemType
Period type	duration
Substitution Group	xbrli:item
Balance	None
Nillable	True
Abstract	True

Text	Lang	Role	Container role
Transportation Advance Ticket Arrangement [Member]	en-US	http://www.xbrl.org/2003/role/label	http://www.xbrl.org/2003/role/link
Category of deferred revenue by arrangement wherein advance air, sea and land transportation tickets issued to customers are recognized as revenue when transportation service is provided.	en-US	http://www.xbrl.org/2003/role/documentation	http://www.xbrl.org/2003/role/link

Name	Value	Role
Note	Element is intended to be used in periods before adoption of amendments from Accounting Standards Update 2014-09. Upon effective date of amendments from Accounting Standards Update 2014-09, element will be transitional and intended to be used by entity that has not adopted amendments from Accounting Standards Update 2014-09.	http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote
PublishDate	2018-01	http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote
Source	ASU	http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote
SourceName	Revenue	http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote
Source_ASU_Number	2014-09	http://fasb.org/us-gaap/role/tin/taxonomyImplementationNote
TaxonomyVersion	2018	http://fasb.org/srt/role/changeNote/changeNote
ChangeDate	2017-08	http://fasb.org/srt/role/changeNote/changeNote
ModifiedReferences	true	http://fasb.org/srt/role/changeNote/changeNote

	Name	Relation Type	Role
	ASU 2014-09 Transition [Abstract] `us-gaap:Asu201409TransitionAbstract`	parent-child	http://fasb.org/us-gaap/role/disclosure/DeferredRevenue