Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2019

The following table presents information regarding our operating leases where we are the lessee at March 31, 2019:

Asset Category	ROU Asset Carrying Value (1)		Lease Liability Carrying Value (2)		Weighted- Average Remaining Term	Weighted- Average Discount Rate (3)
Storage and pipeline facilities	$	147.0	$	147.6	16 years	4.3%
Transportation equipment		60.9		63.3	4 years	3.6%
Office and warehouse space		28.4		27.1	3 years	3.5%
Total	$	236.3	$	238.0

(1) ROU asset amounts are a component of “Other assets” on our consolidated balance sheet. (2) At March 31, 2019, lease liabilities of $38.2 million and $199.8 million were included within “Other current liabilities” and “Other liabilities,” respectively. (3) The discount rate for each category of assets represents the weighted average of either (i) the implicit rate applicable to the underlying leases (where determinable) or (ii) our incremental borrowing rate adjusted for collateralization (if the implicit rate is not determinable). In general, the discount rates are based on either (i) information available at the lease commencement date or (ii) January 1, 2019 for leases existing at the adoption date for ASC 842.

The following table disaggregates our operating lease expense for the three months ended March 31, 2019:

Long-term operating leases:
Fixed lease expense	$	13.4
Variable lease expense		1.8
Subtotal operating lease expense		15.2
Short-term lease expense		11.8
Total operating lease expense	$	27.0