Variable Interest Entities - Narrative (Details) $ in Millions	May 31, 2023 USD ($) vote director	Jun. 07, 2021 USD ($)
Revolving credit agreements
Variable Interest Entity [Line Items]
Variable interest entity, maximum borrowing capacity	$ 2,600	$ 2,600
Variable interest entity, primary beneficiary
Variable Interest Entity [Line Items]
Guarantor obligations, maximum exposure, undiscounted	$ 17
RTFC | Variable interest entity, primary beneficiary
Variable Interest Entity [Line Items]
Number of votes per member for election of directors | vote	1
RTFC | Variable interest entity, primary beneficiary | Revolving credit agreements
Variable Interest Entity [Line Items]
Variable interest entity, maximum borrowing capacity	$ 1,000
RTFC | Variable interest entity, primary beneficiary | Revolving Term Loan
Variable Interest Entity [Line Items]
Variable interest entity, maximum borrowing capacity	$ 1,500
NCSC | Variable interest entity, primary beneficiary
Variable Interest Entity [Line Items]
Number of directors for whom nomination process is controlled | director	1
Number of votes per member for election of directors | vote	1
NCSC | Variable interest entity, primary beneficiary | Revolving credit agreements
Variable Interest Entity [Line Items]
Variable interest entity, maximum borrowing capacity	$ 1,500
NCSC | Variable interest entity, primary beneficiary | Revolving Term Loan
Variable Interest Entity [Line Items]
Variable interest entity, maximum borrowing capacity	$ 1,500