Long-Term Debt and Capital Lease Obligations (Tables)

12 Months Ended

Dec. 31, 2015

Long-term Debt and Capital Lease Obligations [Abstract]

Long-term debt outstanding maturities and sinking fund requirements

The following table shows the future maturities and sinking fund requirements of our long-term debt outstanding (excluding obligations under capital leases) as of December 31, 2015:

(in millions)	Payments
2016	$	127.4
2017	154.5
2018	836.1
2019	357.7
2020	684.4
Thereafter	7,094.6
Total	$	9,254.7

Summary of capitalized leased facilities

The following is a summary of our capitalized leased facilities as of December 31:

(in millions)	2015			2014
Long-term power purchase commitment	$	140.3		$	140.3
Accumulated amortization	(103.9		)	(98.3		)
Total leased facilities	$	36.4		$	42.0

Future minimum lease payments under capital lease and present value of net minimum lease payments

Future minimum lease payments under our capital lease and the present value of our net minimum lease payments as of December 31, 2015 are as follows:

(in millions)	Payments
2016	$	45.1
2017	13.9
2018	14.7
2019	15.5
2020	16.4
Thereafter	24.9
Total minimum lease payments	130.5
Less: Estimated executory costs	(47.4		)
Net minimum lease payments	83.1
Less: Interest	(23.2		)
Present value of net minimum lease payments	59.9
Less: Due currently	(30.3		)
Long-term obligations under capital lease	$	29.6