LEASES

The Company has operating and finance leases for patient service centers, STAT laboratories, corporate offices, vehicles, and certain equipment. Leases have remaining lease terms of less than a year to 15 years, some of which include options to extend the leases for up to 15 years.

The components of lease expense were as follows:



	Three Months Ended March 31, 2019
Operating lease cost	$	61.2

Finance lease cost:
Amortization of right-of-use assets	$	1.4
Interest on lease liabilities	0.8
Total finance lease cost	$	2.2

Supplemental cash flow information related to leases was as follows:



	Three Months Ended March 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	(62.0	)
Operating cash flows from finance leases	(0.5		)
Financing cash flows from finance leases	(3.0		)

Right-of-use assets obtained in exchange for lease obligations:
Operating leases	$	35.7
Finance leases	—

Supplemental balance sheet information related to leases was as follows:



	March 31, 2019
Operating Leases
Operating lease right-of-use assets (included in Property, plant and equipment, net)	$	717.9

Short-term operating lease liabilities	263.4
Operating lease liabilities	502.4
Total operating lease liabilities	$	765.8



	March 31, 2019
Finance Leases
Finance lease right-of-use assets (included in Other assets)	$	43.6

Short-term finance lease liabilities	$	7.7
Finance lease liabilities	48.7
Total finance lease liabilities	$	56.4

Weighted Average Remaining Lease Term
Operating leases	5.3
Finance leases	6.6

Weighted Average Discount Rate
Operating leases	4.0		%
Finance leases	4.6		%

Maturities of lease liabilities are as follows:



Three Months Ended March 31, 2019	Operating Leases			Finance Leases

2019	$	208.0		$	10.9
2020	196.1			13.8
2021	108.8			12.0
2022	75.6			10.8
2023	54.0			10.7
Thereafter	161.4			34.3
Total lease payments	803.9			92.5
Less imputed interest	(38.1		)	(36.1		)
Total	$	765.8		$	56.4

Rental expense for short term leases with a term less than one year for the three months ended March 31, 2019, amounted to $3.3. The Company has variable lease payments that do not depend on a rate or index, primarily for purchase volume commitments, which are recorded as variable cost when incurred. Total variable payments for the three months ended March 31, 2019, were $4.5. As of March 31, 2019, the Company has entered into approximately 50 additional operating leases, primarily for patient service centers, that have not yet commenced and are not significant to the overall lease portfolio. These operating leases will commence in 2019 with lease terms of less than a year to 10 years.

The Company leases various facilities and equipment under non-cancelable lease arrangements. Future minimum rental commitments for leases with non-cancelable terms of one year or more at December 31, 2018, under Accounting Standards Codification 840 are as follows:



Year Ended December 31,	Operating Leases		Finance Leases

2019	$	191.1	$	8.6
2020	145.4		8.0
2021	107.0		6.7
2022	80.9		6.0
2023	61.5		6.5
Thereafter	155.6		23.1

Rental expense, which includes rent for real estate, equipment and automobiles under operating leases, amounted to $85.7 for the three months ended March 31, 2018.