Amount classified as accounts, notes and loans receivable attributable to disposal group held for sale or disposed of.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Acquisitions and Discontinued Operations (Details) - USD ($) $ in Millions		9 Months Ended
	Feb. 25, 2021	Sep. 30, 2021	Dec. 31, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
AQN Strategies acquisition		$ 9
Discontinued Operations \| Government Guaranteed Loans
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loans included in divestiture		$ 602	$ 710
Arbitria Quum Notitia, LLC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
AQN Strategies acquisition	$ 9