Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Financing receivable, allowance for loan losses	$ 1,886	$ 1,978
Accumulated depreciation	$ 392	$ 351
Common stock par value per share (in usd per share)	$ 0.0001	$ 0.0001
Preferred stock par value (in dollars per share)	$ 0.01	$ 0.01