Investments in Unconsolidated Affiliates (Details) - USD ($)		3 Months Ended		9 Months Ended
	Jun. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022		Sep. 30, 2021
Investments in and Advances to Affiliates [Line Items]
Income (loss) from investments in unconsolidated affiliates		$ (12,000,000)	$ 22,000,000	$ 222,000,000	[1]	$ 80,000,000	[1]
Tax expense		147,000,000	$ 54,000,000	382,000,000		300,000,000
Term loan facility | Variable-Rate Term Loan Facilities Due March 2023 | Line of Credit | Lending Joint Ventures
Investments in and Advances to Affiliates [Line Items]
Maximum borrowing capacity		437,000,000		437,000,000
Long-term debt		0		0
Revolving Credit Facility | Line of Credit
Investments in and Advances to Affiliates [Line Items]
Maximum borrowing capacity		6,000,000,000		6,000,000,000
Revolving Credit Facility | Variable-Rate Revolving Credit Facilities Due March 2023 | Line of Credit | Lending Joint Ventures
Investments in and Advances to Affiliates [Line Items]
Maximum borrowing capacity		$ 83,000,000		83,000,000
defi SOLUTIONS Group
Investments in and Advances to Affiliates [Line Items]
Income (loss) from investments in unconsolidated affiliates				80,000,000
Tax expense				$ 19,000,000
InvestCloud
Investments in and Advances to Affiliates [Line Items]
Income (loss) from investments in unconsolidated affiliates						28,000,000
Tax expense						6,000,000
Capital contribution						200,000,000
InvestCloud | Disposal Group, Disposed of by Sale
Investments in and Advances to Affiliates [Line Items]
Tax expense						8,000,000
Proceeds from sale of entire ownership interest	$ 466,000,000
Pre-tax gain on sale						$ 33,000,000

[1] The company revised, for comparable purposes with the current period’s presentation, the consolidated statement of cash flows presentation for the nine months ended September 30, 2021 to include cash and cash equivalents within settlement assets as a component of total cash and cash equivalents. Additional information is included in Note 1.