What is the free cash flow Ratio?

Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Vehicle floorplan payable-trade, net	(240.6)	242.4	(64.4)
Accounts payable	(17.6)	1.7	0.5
Other liabilities	(22.1)	(2)	139.1
Net cash provided by continuing operations	769.2	510.4	540.4
Net cash provided by (used in) discontinued operations	0	0.6	(0.3)
Net cash provided by operating activities	769.2	511	540.1
CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES:
Purchases of property and equipment	(269.3)	(400.8)	(313.4)
Proceeds from the sale of property and equipment	1	28	21
Proceeds from the disposal of assets held for sale	38	21.1	38
Insurance recoveries on property and equipment	3.5	1.1	1.7
Cash used in business acquisitions, net of cash acquired	(4.7)	(67.2)	(76.8)
Cash received from business divestitures, net of cash relinquished	115.6	173.2	104.6
Investment in equity security	0	(50)	0
Other	0.1	(0.7)	(2.1)
Net cash used in continuing operations	(115.8)	(295.3)	(227)
Net cash used in discontinued operations	0	0	0
Net cash used in investing activities	(115.8)	(295.3)	(227)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES:
Repurchases of common stock	(44.7)	(100)	(434.9)
Payment of 6.75% Senior Notes due 2018	0	(400)	0
Proceeds from revolving credit facilities	0	0	1,307
Payments of revolving credit facilities	0	0	(1,307)
Net proceeds from (payments of) commercial paper	(460)	300	(612)
Payment of debt issuance costs	0	0	(13.5)
Net proceeds from (payments of) vehicle floorplan payable - non-trade	(134.3)	(34.2)	130.2
Payments of mortgage facilities	0	0	(153.2)
Payments of capital lease and other debt obligations	(31)	(15.8)	(11.8)
Proceeds from the exercise of stock options	12.7	17.8	39.7
Payments of tax withholdings for stock-based awards	(3)	(2.7)	(1.1)
Other	0	(2.5)	0
Net cash used in continuing operations	(660.3)	(237.4)	(307.4)
Net cash used in discontinued operations	0	0	0