Document and Entity Information - shares	9 Months Ended
	Dec. 31, 2017	Jan. 31, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Document Period End Date	Dec. 31, 2017
Amendment Flag	false
Entity Registrant Name	Toyota Motor Credit Corporation
Entity Central Index Key	0000834071
Current Fiscal Year End Date	--03-31
Trading Symbol	TMCC
Entity Filer Category	Non-accelerated Filer
Entity Common Stock Shares Outstanding		91,500
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3