Fair Value Measurements Financial Assets and Liabilities (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value, by Balance Sheet Grouping

The carrying amounts and estimated fair values of the Partnership's financial assets and liabilities which were not recorded at fair value on the Condensed Consolidated Balance Sheets as of March 31, 2019, and December 31, 2018, were as follows (in millions):

As of March 31, 2019				Estimated Fair Value
Financial Assets	Carrying Amount			Level 1		Level 2		Level 3		Total
Cash and cash equivalents	$	15.3		$	15.3	$	—	$	—	$	15.3
Financial Liabilities
Long-term debt	$	3,646.7	(1)	$	—	$	3,728.6	$	—	$	3,728.6

(1) The carrying amount of long-term debt excludes a $7.3 million long-term finance lease obligation and

$6.6 million of unamortized debt issuance costs.

As of December 31, 2018				Estimated Fair Value
Financial Assets	Carrying Amount			Level 1		Level 2		Level 3		Total
Cash and cash equivalents	$	3.6		$	3.6	$	—	$	—	$	3.6
Financial Liabilities
Long-term debt	$	3,700.9	(1)	$	—	$	3,714.6	$	—	$	3,714.6

(1) The carrying amount of long-term debt excludes a $7.5 million long-term finance lease obligation and

$7.1 million of unamortized debt issuance costs.