COMMITMENTS AND CONTINGENCIES - Commitments (Details) $ in Millions	Apr. 27, 2025 USD ($)
Unfunded Commitments
Commitments
Reserve for credit losses on unfunded commitments	$ 5.6
Wholesale Receivables
Commitments
Unused commitments	10,649.9
Customer Receivables
Commitments
Unused commitments	$ 33,700.6

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