Contractual Obligations. We have certain contractual obligations requiring payments at specified periods. The obligations include long-term debt, lease obligations, energy commodity contracts and obligations for various services including pipeline capacity and outsourcing of IT services. The total contractual obligations in existence at December 31, 2018 and their maturities were:



(in millions)	Total		2019		2020		2021		2022		2023		After
Long-term debt ⁽¹⁾	$	7,029.6	$	41.0	$	—	$	63.6	$	530.0	$	600.0	$	5,795.0
Capital leases⁽²⁾	322.4		23.0		22.5		22.6		22.1		19.8		212.4
Interest payments on long-term debt	6,311.7		319.8		318.6		318.6		315.0		289.0		4,750.7
Operating leases⁽³⁾	45.9		11.0		7.3		6.1		4.2		2.8		14.5
Energy commodity contracts	154.3		99.2		55.1		—		—		—		—
Service obligations:
Pipeline service obligations	3,566.7		592.3		487.7		450.5		437.5		260.8		1,337.9
IT service obligations	211.0		68.3		60.0		47.1		35.6		—		—
Other service obligations	86.7		33.5		43.6		9.6		—		—		—
Other liabilities	24.2		24.2		—		—		—		—		—
Total contractual obligations	$	17,752.5	$	1,212.3	$	994.8	$	918.1	$	1,344.4	$	1,172.4	$	12,110.5

⁽¹⁾ Long-term debt balance excludes unamortized issuance costs and discounts of $68.5 million.

⁽²⁾ Capital lease payments shown above are inclusive of interest totaling $114.6 million.

⁽³⁾Operating lease balances do not include amounts for fleet leases that can be renewed beyond the initial lease term. The Company anticipates renewing the leases beyond the initial term, but the anticipated payments associated with the renewals do not meet the definition of expected minimum lease payments and therefore are not included above. Expected payments are $26.7 million in 2019, $22.4 million in 2020, $16.6 million in 2021, $12.3 million in 2022, $9.3 million in 2023 and $8.8 million thereafter.