Financing Arrangements - Interest Expense (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Short-Term Debt [Line Items]
Direct Interest Expense	$ 110	$ 74
Amortization of Deferred Financing Costs and Discount / Premium	4	3
Total Interest Expense	$ 114	77
Unsecured Notes
Short-Term Debt [Line Items]
Stated interest rate	3.125%
4.750% Notes due 2022 | Unsecured Notes
Short-Term Debt [Line Items]
Stated interest rate			4.75%
Direct Interest Expense	$ 0	6
Amortization of Deferred Financing Costs and Discount / Premium	0	0
Total Interest Expense	$ 0	6
4.625% Notes due 2024 | Unsecured Notes
Short-Term Debt [Line Items]
Stated interest rate	4.625%		4.625%
Direct Interest Expense	$ 5	4
Amortization of Deferred Financing Costs and Discount / Premium	0	0
Total Interest Expense	$ 5	4
1.650% Notes due 2024 | Unsecured Notes
Short-Term Debt [Line Items]
Stated interest rate	1.65%		1.65%
Direct Interest Expense	$ 2	2
Amortization of Deferred Financing Costs and Discount / Premium	1	1
Total Interest Expense	$ 3	3
4.125% Notes due 2025 | Unsecured Notes
Short-Term Debt [Line Items]
Stated interest rate	4.125%		4.125%
Direct Interest Expense	$ 5	5
Amortization of Deferred Financing Costs and Discount / Premium	1	0
Total Interest Expense	$ 6	5
4.250% Notes due 2025 | Unsecured Notes
Short-Term Debt [Line Items]
Stated interest rate	4.25%		4.25%
Direct Interest Expense	$ 5	5
Amortization of Deferred Financing Costs and Discount / Premium	(2)	(1)
Total Interest Expense	$ 3	4
8.625% Notes due 2025 | Unsecured Notes
Short-Term Debt [Line Items]
Stated interest rate	8.625%		8.625%
Direct Interest Expense	$ 5	5
Amortization of Deferred Financing Costs and Discount / Premium	0	1
Total Interest Expense	$ 5	6
3.400% Notes due 2026 | Unsecured Notes
Short-Term Debt [Line Items]
Stated interest rate	3.40%		3.40%
Direct Interest Expense	$ 9	9
Amortization of Deferred Financing Costs and Discount / Premium	2	1
Total Interest Expense	$ 11	10
2.625% Notes due 2027 | Unsecured Notes
Short-Term Debt [Line Items]
Stated interest rate	2.625%		2.625%
Direct Interest Expense	$ 2	2
Amortization of Deferred Financing Costs and Discount / Premium	0	0
Total Interest Expense	$ 2	2
3.250% Notes due 2027 | Unsecured Notes
Short-Term Debt [Line Items]
Stated interest rate	3.25%		3.25%
Direct Interest Expense	$ 4	3
Amortization of Deferred Financing Costs and Discount / Premium	0	0
Total Interest Expense	$ 4	3
3.125% Notes due 2028 | Unsecured Notes
Short-Term Debt [Line Items]
Stated interest rate	3.125%		3.125%
Direct Interest Expense	$ 6	6
Amortization of Deferred Financing Costs and Discount / Premium	0	0
Total Interest Expense	6	6
CLO-1 Notes | Unsecured Notes
Short-Term Debt [Line Items]
Direct Interest Expense	6	2
Amortization of Deferred Financing Costs and Discount / Premium	0	0
Total Interest Expense	6	2
Revolving Credit Facility | Ambler Credit Facility | Line of Credit
Short-Term Debt [Line Items]
Direct Interest Expense	2	1
Amortization of Deferred Financing Costs and Discount / Premium	1	0
Total Interest Expense	3	1
Revolving Credit Facility | CCT Tokyo Funding Credit Facility | Line of Credit
Short-Term Debt [Line Items]
Direct Interest Expense	5	2
Amortization of Deferred Financing Costs and Discount / Premium	0	0
Total Interest Expense	5	2
Revolving Credit Facility | Darby Creek Credit Facility | Line of Credit
Short-Term Debt [Line Items]
Direct Interest Expense	4	1
Amortization of Deferred Financing Costs and Discount / Premium	0	0
Total Interest Expense	4	1
Revolving Credit Facility | Dunlap Credit Facility | Line of Credit
Short-Term Debt [Line Items]
Direct Interest Expense	8	3
Amortization of Deferred Financing Costs and Discount / Premium	0	0
Total Interest Expense	8	3
Revolving Credit Facility | Meadowbrook Run Credit Facility | Line of Credit
Short-Term Debt [Line Items]
Direct Interest Expense	4	2
Amortization of Deferred Financing Costs and Discount / Premium	0	0
Total Interest Expense	4	2
Revolving Credit Facility | Senior Secured Revolving Credit Facility | Line of Credit
Short-Term Debt [Line Items]
Direct Interest Expense	38	16
Amortization of Deferred Financing Costs and Discount / Premium	1	1
Total Interest Expense	39	17
Prime Brokerage Facility | Burholme Prime Brokerage Facility | Line of Credit
Short-Term Debt [Line Items]
Direct Interest Expense	0	0
Amortization of Deferred Financing Costs and Discount / Premium	0	0
Total Interest Expense	$ 0	$ 0