Long-Term Debt (Tables)

3 Months Ended

Mar. 31, 2015

Debt Disclosure [Abstract]

Indebtedness Table

As of March 31, 2015 and December 31, 2014, long-term debt consisted of the following (in millions):

	March 31, 2015		December 31, 2014
Partnership credit facility (due 2020), interest based on Prime and/or LIBOR plus an applicable margin, interest rate at March 31, 2015 and December 31, 2014 was 1.6% and 1.9% respectively	$	709.0	$	237.0
Company credit facility (due 2019)	—		—
The Partnership's senior unsecured notes (due 2019), net of discount of $0.5 million, which bear interest at the rate of 2.70%	399.5		399.5
The Partnership's senior unsecured notes (due 2022), including a premium of $21.1 million at March 31, 2015 and $21.9 million at December 31, 2014, which bear interest at the rate of 7.125%	183.7		184.4
The Partnership's senior unsecured notes (due 2024), net of premium of $3.1 million at March 31, 2015 and $3.2 million at December 31, 2014, which bear interest at the rate of 4.40%	553.1		553.2
The Partnership's senior unsecured notes (due 2044), net of discount of $0.3 million, which bear interest at the rate of 5.60%	349.7		349.7
The Partnership's senior unsecured notes (due 2045), net of discount of $1.6 million at March 31, 2015 and $1.7 million at December 31, 2014, which bear interest at the rate of 5.05%	298.4		298.3
Other debt	0.3		0.4
Debt classified as long-term	$	2,493.7	$	2,022.5