COMMITMENTS AND CONTINGENCIES - Commitments (Details) $ in Millions	Jul. 28, 2024 USD ($)
Unfunded Commitments
Commitments
Reserve for credit losses on unfunded commitments	$ 4.7
Wholesale Receivables
Commitments
Unused commitments	8,014.9
Customer Receivables
Commitments
Unused commitments	$ 33,116.8

Carrying amount (including both current and noncurrent portions) of accrued credit losses on unfunded commitments that are not unconditionally cancellable as of the balance sheet date.

No definition available.

Name:	jdcc_ReserveForCreditLossesOnUnfundedCommitments
Namespace Prefix:	jdcc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant