Senior Unsecured Notes. The Company had an aggregate of $4,200.0 million in senior unsecured notes (collectively, the “Senior Notes”) outstanding at March 31, 2022, as presented in the table below:

		Principal Amount Outstanding at		Carrying Value at		Carrying Value at		Fair Value at		Fair Value at
	Maturity Date	March 31, 2022		March 31, 2022		December 31, 2021		March 31, 2022		December 31, 2021
	(in thousands)
Long-term debt
4.000% senior unsecured notes due 2029	November 15, 2029		1,000,000		991,728		991,455		973,030		1,047,950
3.625% senior unsecured notes due 2030	September 1, 2030		900,000		894,428		894,263		845,955		924,777
3.875% senior unsecured notes due 2031	February 15, 2031		1,000,000		990,247		989,973		950,380		1,046,620
3.625% senior unsecured notes due 2031	November 1, 2031		600,000		593,702		593,538		565,200		625,536
3.250% senior unsecured notes due 2033	August 15, 2033		700,000		692,360		692,193		630,791		710,906
Total long-term debt		$	4,200,000	$	4,162,465	$	4,161,422	$	3,965,356	$	4,355,789

Interest payments attributable to the Senior Notes are due as presented in the following table:

	First semi-annual interest payment date	Second semi-annual interest payment date
Senior Notes
4.000% senior unsecured notes due 2029	May 15	November 15
3.625% senior unsecured notes due 2030	March 1	September 1
3.875% senior unsecured notes due 2031	June 1	December 1
3.625% senior unsecured notes due 2031	May 1	November 1
3.250% senior unsecured notes due 2033 ⁽¹⁾	February 15	August 15

The fair market value of the Company’s debt obligations represent Level 2 valuations. The Company utilizes the market approach and obtains security pricing from a vendor who uses broker quotes and third-party pricing services to determine fair values.

Revolver. Since November 20, 2014, the Company has maintained a revolving credit agreement with a syndicate of banks (as amended, the “Revolving Credit Agreement”). On February 16, 2022, the Company entered into Amendment No. 5 (the “Fifth Amendment”) to the Revolving Credit Agreement. The Fifth Amendment, among other things, extended the term of the Revolving Credit Agreement to February 2027 and replaced the London Interbank Offered Rate with the Secured Overnight Financing Rate as the basis for the variable rates of interest. At March 31, 2022, the Revolving Credit Agreement was undrawn.

In connection with the closings of offerings of the Senior Notes, entry into the Revolving Credit Agreement and the subsequent amendments, the Company paid certain financing fees which, together with the existing fees related to prior credit facilities, are being amortized over their related lives. At March 31, 2022, $40.1 million of the deferred financing fees and premium remain unamortized, $0.5 million of which is included in “Prepaid and other assets,” $2.0 million of which is included in “Other non-current assets” and $37.6 million of which is included in “Long-term debt” on the Unaudited Condensed Consolidated Statement of Financial Condition.