Long-Term Debt (Tables)

6 Months Ended

Jun. 30, 2016

Debt Disclosure [Abstract]

Indebtedness Table

As of June 30, 2016 and December 31, 2015, long-term debt consisted of the following (in millions):

	June 30, 2016			December 31, 2015
Partnership credit facility (due 2020), interest based on Prime and/or LIBOR plus an applicable margin, interest rate at June 30, 2016 and December 31, 2015 was 2.2% and 1.8%, respectively	$	697.0		$	414.0
Company credit facility (due 2019), interest based on LIBOR plus an applicable margin, interest rate at June 30, 2016 was 4.25%	15.1			—
The Partnership's senior unsecured notes (due 2019), net of discount of $0.3 million at June 30, 2016 and $0.4 million at December 31, 2015, which bear interest at the rate of 2.70%	399.7			399.6
The Partnership's senior unsecured notes (due 2022), including a premium of $17.5 million at June 30, 2016 and $18.9 million at December 31, 2015, which bear interest at the rate of 7.125%	180.0			181.4
The Partnership's senior unsecured notes (due 2024), net of premium of $2.7 million at June 30, 2016 and $2.9 million at December 31, 2015, which bear interest at the rate of 4.40%	552.7			552.9
The Partnership's senior unsecured notes (due 2025), net of discount of $1.2 million at June 30, 2016 and $1.2 million at December 31, 2015, which bear interest at the rate of 4.15%	748.8			748.8
The Partnership's senior unsecured notes (due 2044), net of discount of $0.2 million at June 30, 2016 and $0.2 million at December 31, 2015, which bear interest at the rate of 5.60%	349.8			349.8
The Partnership's senior unsecured notes (due 2045), net of discount of $6.8 million at June 30, 2016 and $6.9 million at December 31, 2015, which bear interest at the rate of 5.05%	443.2			443.1
Debt issuance cost, net of amortization of $7.0 million at June 30, 2016 and $5.1 million at December 31, 2015.	(22.2		)	(23.8		)
Other debt	—			0.2
Debt classified as long-term	$	3,364.1		$	3,066.0