Financing (Tables)

12 Months Ended

Dec. 31, 2021

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

The following table presents all long-term debt issuances outstanding as of December 31, 2021 and 2020 (in millions):

	2021		2020
Notes and Debentures:
Boardwalk Pipelines
3.375% Notes due 2023	$	300.0	$	300.0
4.95% Notes due 2024	600.0		600.0
5.95% Notes due 2026	550.0		550.0
4.45% Notes due 2027	500.0		500.0
4.80% Notes due 2029	500.0		500.0
3.40% Notes due 2031	500.0		500.0
Gulf South
4.00% Notes due 2022 (Gulf South Notes)	300.0		300.0
Texas Gas
7.25% Debentures due 2027	100.0		100.0
Total notes and debentures	3,350.0		3,350.0
Revolving Credit Facility:
Gulf South	—		30.0
Texas Gas	—		100.0
Total revolving credit facility	—		130.0
Finance lease obligation	5.3		6.1
	3,355.3		3,486.1
Less:
Unamortized debt discount	(16.0)		(19.6)
Unamortized debt issuance costs	(4.8)		(5.8)
Total Long-Term Debt and Finance Lease Obligation	$	3,334.5	$	3,460.7

The Company had no new debt issuances for the year ended December 31, 2021. For the years ended December 31, 2020 and 2019, the Company completed the following debt issuances (in millions, except interest rates):

Date of Issuance	Issuing Subsidiary	Amount of  Issuance		Purchaser Discounts and Expenses		Net Proceeds			Interest Rate		Maturity Date	Interest  Payable
August 2020	Boardwalk Pipelines	$	500.0	$	5.0	$	495.0	(1)	3.40	%	February 15, 2031	February 15 and August 15
May 2019	Boardwalk Pipelines	$	500.0	$	4.8	$	495.2	(2)	4.80	%	May 3, 2029	May 3 and November 3

(1)The net proceeds of this offering were used to retire the outstanding $440.0 million aggregate principal amount of Texas Gas 4.50% notes due 2021 on November 3, 2020, to fund growth capital expenditures and for general partnership purposes.

(2)The net proceeds of this offering were used to retire the outstanding $350.0 million aggregate principal amount of Boardwalk Pipelines 5.75% notes due 2019 at maturity and for general partnership purposes.

Schedule of Maturities of Long-term Debt

Maturities of the Company's long-term debt for the next five years and in total thereafter are as follows (in millions):

 

2022	$	300.0
2023	300.0
2024	600.0
2025	—
2026	550.0
Thereafter	1,600.0
Total long-term debt	$	3,350.0