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Business and Summary of Significant Accounting Policies - Recent Developments (Details) - USD ($)			1 Months Ended		6 Months Ended
	Sep. 17, 2021	Aug. 03, 2021	Jan. 31, 2022	Jun. 30, 2021	Dec. 31, 2021	Sep. 30, 2021	Jun. 29, 2021	Mar. 30, 2021	Jan. 25, 2021	Dec. 07, 2020
Business Acquisition [Line Items]
Stock repurchase program period (in years)		3 years
Stock repurchase program number of shares authorized (in shares)		25,000,000
Subscriber fee, percentage							2.50%
FABN, program, authorized maximum amount				$ 5,000,000,000.0
FABN program, amount outstanding					$ 1,900,000,000
Pension Risk Transfer
Business Acquisition [Line Items]
Pension risk transfer, pension obligations					$ 1,100,000,000
Subsequent Event
Business Acquisition [Line Items]
FANB program, additional amount issued			$ 400,000,000
Paysafe Limited | Subscription Agreements with Paysafe Limited and Foley Trasimene Acquisition Corp. II
Business Acquisition [Line Items]
Subscription agreements, investment										$ 500,000,000
Subscription agreement, stock purchase, par value (USD per share)										$ 0.001
Subscription agreement stock purchase price (USD per share)										$ 10.00
Subscriber fee, percentage										1.60%
Subscription Agreements, Subscriptions Funded, Shares Received								50,000,000
Subscription agreement, ownership interest expected, percent						7.00%
FTAC Subscription Agreements
Business Acquisition [Line Items]
Subscription agreements, investment									$ 150,000,000
Subscription agreement, stock purchase, par value (USD per share)									$ 0.001
Subscription agreement stock purchase price (USD per share)									$ 10.00
3.20% Senior Notes
Business Acquisition [Line Items]
Debt instrument, interest rate, stated percentage	3.20%				3.20%
Aggregate principal amount	$ 450,000,000
Proceeds from issuance of senior notes	$ 443,000,000

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