Condensed Consolidating Financial Information - Condensed Consolidating Statements of Cash Flows (Details) - USD ($) $ in Millions		1 Months Ended		12 Months Ended
	Feb. 21, 2018	Sep. 30, 2019	Jan. 17, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Consolidated Statements of Cash Flows [Abstract]
Net cash provided by operating activities				$ 635.3	$ 762.4	$ 658.3
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired				(231.5)	(143.9)	(38.8)
Purchases of property and equipment				(372.4)	(254.5)	(225.8)
Additions to capitalized software costs				(13.0)	(16.0)	(19.2)
Purchases of intangible assets				(18.7)	(5.7)	(3.7)
Proceeds from sale of restricted investments				17.6	11.6	4.2
Purchase of restricted investments				(32.9)	(13.3)	(8.5)
Funding of intercompany note receivable				0.0
Proceeds from repayment of intercompany note receivable				0.0	0.0	0.0
Other, net				(6.5)	(2.7)	8.8
Net cash used in investing activities				(657.4)	(424.5)	(283.0)
Cash flows from financing activities:
Proceeds from bond issuance				1,000.0	0.0	0.0
Principal payments on debt, including pre-payments				(519.5)	(20.6)	(129.9)
Principal borrowings on intercompany note payable				0.0
Principal payments on intercompany notes payable				0.0	0.0	0.0
Borrowings on revolving credit facility				635.0	325.0	273.3
Payments on revolving credit facility				(620.0)	(390.0)	(330.3)
Principal payments under finance lease obligations				(19.5)	(17.9)	(15.3)
Principal payments under finance lease obligations				(19.5)
Debt amendment and issuance costs				(21.5)	(0.1)	(4.1)
Repurchases of common stock, including fees and expenses				(45.9)	0.0	(38.1)
Dividends paid on common stock				(108.7)	(100.8)	(91.5)
Purchase of equity interests in consolidated affiliates	$ (65.0)	$ (163.0)		(162.9)	(65.1)	0.0
Proceeds from exercising stock warrants			$ 26.7	0.0	0.0	26.6
Distributions paid to noncontrolling interests of consolidated affiliates				(79.8)	(75.4)	(51.9)
Taxes paid on behalf of employees for shares withheld				(16.6)	(8.3)	(19.8)
Contributions from consolidated affiliates				15.9	12.6	20.8
Other, net				(8.3)	19.4	0.3
Change in intercompany advances				0.0	0.0	0.0
Net cash provided by (used in) financing activities				48.2	(321.2)	(359.9)
Increase in cash, cash equivalents, and restricted cash				26.1	16.7	15.4
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period			101.4	133.5	116.8	101.4
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period				159.6	133.5	116.8
Reconciliation of Cash, Cash Equivalents, and Restricted Cash
Cash and cash equivalents at beginning of period			40.5	69.2	54.4	40.5
Restricted cash at beginning of period			60.9	59.0	62.4	60.9
Restricted cash included in other long-term assets at beginning of period			0.0	5.3	0.0	0.0
Cash and cash equivalents at end of period				94.8	69.2	54.4
Restricted cash at end of period				57.4	59.0	62.4
Restricted cash included in other long-term assets at end of period				7.4	5.3	0.0
Supplemental schedule of noncash financing activities:
Intercompany note activity				0.0	0.0	0.0
Conversion of convertible debt						319.4
Eliminating Entries
Consolidated Statements of Cash Flows [Abstract]
Net cash provided by operating activities				0.0	0.0	0.0
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired				0.0	0.0	0.0
Purchases of property and equipment				0.0	0.0	0.0
Additions to capitalized software costs				0.0	0.0	0.0
Purchases of intangible assets				0.0	0.0	0.0
Proceeds from sale of restricted investments				0.0	0.0	0.0
Purchase of restricted investments				0.0	0.0	0.0
Funding of intercompany note receivable				64.0
Proceeds from repayment of intercompany note receivable				(110.5)	(87.0)	(51.0)
Other, net				0.0	0.0	0.0
Net cash used in investing activities				(46.5)	(87.0)	(51.0)
Cash flows from financing activities:
Proceeds from bond issuance				0.0
Principal payments on debt, including pre-payments				0.0	0.0	0.0
Principal borrowings on intercompany note payable				(64.0)
Principal payments on intercompany notes payable				110.5	87.0	51.0
Borrowings on revolving credit facility				0.0	0.0	0.0
Payments on revolving credit facility				0.0	0.0	0.0
Principal payments under finance lease obligations					0.0	0.0
Principal payments under finance lease obligations				0.0
Debt amendment and issuance costs				0.0	0.0	0.0
Repurchases of common stock, including fees and expenses				0.0		0.0
Dividends paid on common stock				0.0	0.0	0.0
Purchase of equity interests in consolidated affiliates				0.0	0.0
Proceeds from exercising stock warrants						0.0
Distributions paid to noncontrolling interests of consolidated affiliates				0.0	0.0	0.0
Taxes paid on behalf of employees for shares withheld				0.0	0.0	0.0
Contributions from consolidated affiliates				0.0	0.0	0.0
Other, net				0.0	0.0	0.0
Change in intercompany advances				0.0	0.0	0.0
Net cash provided by (used in) financing activities				46.5	87.0	51.0
Increase in cash, cash equivalents, and restricted cash				0.0	0.0	0.0
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period			0.0	0.0	0.0	0.0
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period				0.0	0.0	0.0
Reconciliation of Cash, Cash Equivalents, and Restricted Cash
Cash and cash equivalents at beginning of period			0.0	0.0	0.0	0.0
Restricted cash at beginning of period			0.0	0.0	0.0	0.0
Restricted cash included in other long-term assets at beginning of period				0.0
Cash and cash equivalents at end of period				0.0	0.0	0.0
Restricted cash at end of period				0.0	0.0	0.0
Restricted cash included in other long-term assets at end of period				0.0	0.0
Supplemental schedule of noncash financing activities:
Intercompany note activity				0.0	0.0	0.0
Conversion of convertible debt						0.0
Encompass Health Corporation
Consolidated Statements of Cash Flows [Abstract]
Net cash provided by operating activities				(110.8)	(11.3)	28.2
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired				(217.8)	(131.4)	(10.9)
Purchases of property and equipment				(38.6)	(34.1)	(39.4)
Additions to capitalized software costs				(7.4)	(14.1)	(16.3)
Purchases of intangible assets				0.0	(2.5)	0.0
Proceeds from sale of restricted investments				0.0	0.0	0.0
Purchase of restricted investments				0.0	0.0	0.0
Funding of intercompany note receivable				(64.0)
Proceeds from repayment of intercompany note receivable				93.0	87.0	51.0
Other, net				(8.3)	(6.0)	(3.7)
Net cash used in investing activities				(243.1)	(101.1)	(19.3)
Cash flows from financing activities:
Proceeds from bond issuance				1,000.0
Principal payments on debt, including pre-payments				(517.8)	(17.6)	(126.9)
Principal borrowings on intercompany note payable				0.0
Principal payments on intercompany notes payable				(17.5)	0.0	0.0
Borrowings on revolving credit facility				635.0	325.0	273.3
Payments on revolving credit facility				(620.0)	(390.0)	(330.3)
Principal payments under finance lease obligations					0.0	0.0
Principal payments under finance lease obligations				(0.7)
Debt amendment and issuance costs				(21.5)	0.0	(4.1)
Repurchases of common stock, including fees and expenses				(45.9)		(38.1)
Dividends paid on common stock				(108.6)	(100.7)	(91.5)
Purchase of equity interests in consolidated affiliates				(162.9)	(65.1)
Proceeds from exercising stock warrants						26.6
Distributions paid to noncontrolling interests of consolidated affiliates				0.0	0.0	0.0
Taxes paid on behalf of employees for shares withheld				(15.4)	(7.4)	(19.5)
Contributions from consolidated affiliates				0.0	0.0	0.0
Other, net				(4.4)	3.0	1.0
Change in intercompany advances				245.8	372.4	314.3
Net cash provided by (used in) financing activities				366.1	119.6	4.8
Increase in cash, cash equivalents, and restricted cash				12.2	7.2	13.7
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period			20.6	41.5	34.3	20.6
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period				53.7	41.5	34.3
Reconciliation of Cash, Cash Equivalents, and Restricted Cash
Cash and cash equivalents at beginning of period			20.6	41.5	34.3	20.6
Restricted cash at beginning of period			0.0	0.0	0.0	0.0
Restricted cash included in other long-term assets at beginning of period				0.0
Cash and cash equivalents at end of period				53.7	41.5	34.3
Restricted cash at end of period				0.0	0.0	0.0
Restricted cash included in other long-term assets at end of period				0.0	0.0
Supplemental schedule of noncash financing activities:
Intercompany note activity				(232.9)	(136.8)	(8.8)
Conversion of convertible debt						319.4
Guarantor Subsidiaries
Consolidated Statements of Cash Flows [Abstract]
Net cash provided by operating activities				450.3	422.2	385.9
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired				0.0	0.0	0.0
Purchases of property and equipment				(207.3)	(133.9)	(106.5)
Additions to capitalized software costs				(0.7)	(0.1)	(0.3)
Purchases of intangible assets				(18.0)	0.0	0.0
Proceeds from sale of restricted investments				0.0	0.0	0.0
Purchase of restricted investments				0.0	0.0	0.0
Funding of intercompany note receivable				0.0
Proceeds from repayment of intercompany note receivable				0.0	0.0	0.0
Other, net				8.2	2.8	11.7
Net cash used in investing activities				(217.8)	(131.2)	(95.1)
Cash flows from financing activities:
Proceeds from bond issuance				0.0
Principal payments on debt, including pre-payments				0.0	0.0	0.0
Principal borrowings on intercompany note payable				0.0
Principal payments on intercompany notes payable				0.0	0.0	0.0
Borrowings on revolving credit facility				0.0	0.0	0.0
Payments on revolving credit facility				0.0	0.0	0.0
Principal payments under finance lease obligations					(8.4)	(7.3)
Principal payments under finance lease obligations				(8.3)
Debt amendment and issuance costs				0.0	0.0	0.0
Repurchases of common stock, including fees and expenses				0.0		0.0
Dividends paid on common stock				0.0	0.0	0.0
Purchase of equity interests in consolidated affiliates				0.0	0.0
Proceeds from exercising stock warrants						0.0
Distributions paid to noncontrolling interests of consolidated affiliates				0.0	0.0	0.0
Taxes paid on behalf of employees for shares withheld				0.0	0.0	0.0
Contributions from consolidated affiliates				0.0	0.0	0.0
Other, net				0.0	0.0	0.0
Change in intercompany advances				(222.0)	(282.5)	(282.2)
Net cash provided by (used in) financing activities				(230.3)	(290.9)	(289.5)
Increase in cash, cash equivalents, and restricted cash				2.2	0.1	1.3
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period			1.6	3.0	2.9	1.6
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period				5.2	3.0	2.9
Reconciliation of Cash, Cash Equivalents, and Restricted Cash
Cash and cash equivalents at beginning of period			1.6	3.0	2.9	1.6
Restricted cash at beginning of period			0.0	0.0	0.0	0.0
Restricted cash included in other long-term assets at beginning of period				0.0
Cash and cash equivalents at end of period				5.2	3.0	2.9
Restricted cash at end of period				0.0	0.0	0.0
Restricted cash included in other long-term assets at end of period				0.0	0.0
Supplemental schedule of noncash financing activities:
Intercompany note activity				0.0	0.0	0.0
Conversion of convertible debt						0.0
Non-Guarantor Subsidiaries
Consolidated Statements of Cash Flows [Abstract]
Net cash provided by operating activities				247.9	259.0	181.2
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired				0.0	0.0	0.0
Purchases of property and equipment				(117.9)	(79.9)	(75.4)
Additions to capitalized software costs				(1.4)	0.0	(0.1)
Purchases of intangible assets				0.0	(0.1)	0.0
Proceeds from sale of restricted investments				17.6	11.6	4.2
Purchase of restricted investments				(30.9)	(13.3)	(8.5)
Funding of intercompany note receivable				0.0
Proceeds from repayment of intercompany note receivable				17.5	0.0	0.0
Other, net				(6.7)	0.0	0.2
Net cash used in investing activities				(121.8)	(81.7)	(79.6)
Cash flows from financing activities:
Proceeds from bond issuance				0.0
Principal payments on debt, including pre-payments				(1.7)	(3.0)	(3.0)
Principal borrowings on intercompany note payable				0.0
Principal payments on intercompany notes payable				0.0	0.0	0.0
Borrowings on revolving credit facility				0.0	0.0	0.0
Payments on revolving credit facility				0.0	0.0	0.0
Principal payments under finance lease obligations					(4.2)	(3.9)
Principal payments under finance lease obligations				(2.6)
Debt amendment and issuance costs				0.0	(0.1)	0.0
Repurchases of common stock, including fees and expenses				0.0		0.0
Dividends paid on common stock				0.0	0.0	0.0
Purchase of equity interests in consolidated affiliates				0.0	0.0
Proceeds from exercising stock warrants						0.0
Distributions paid to noncontrolling interests of consolidated affiliates				(79.8)	(75.4)	(51.9)
Taxes paid on behalf of employees for shares withheld				0.0	0.0	0.0
Contributions from consolidated affiliates				15.9	12.6	20.8
Other, net				0.0	13.2	0.0
Change in intercompany advances				(56.5)	(118.9)	(62.0)
Net cash provided by (used in) financing activities				(124.7)	(175.8)	(100.0)
Increase in cash, cash equivalents, and restricted cash				1.4	1.5	1.6
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period			66.3	69.4	67.9	66.3
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period				70.8	69.4	67.9
Reconciliation of Cash, Cash Equivalents, and Restricted Cash
Cash and cash equivalents at beginning of period			5.4	5.1	5.5	5.4
Restricted cash at beginning of period			60.9	59.0	62.4	60.9
Restricted cash included in other long-term assets at beginning of period				5.3
Cash and cash equivalents at end of period				6.0	5.1	5.5
Restricted cash at end of period				57.4	59.0	62.4
Restricted cash included in other long-term assets at end of period				7.4	5.3
Supplemental schedule of noncash financing activities:
Intercompany note activity				0.0	0.0	0.0
Conversion of convertible debt						0.0
Holdings
Consolidated Statements of Cash Flows [Abstract]
Net cash provided by operating activities				47.9	92.5	63.0
Cash flows from investing activities:
Acquisition of businesses, net of cash acquired				(13.7)	(12.5)	(27.9)
Purchases of property and equipment				(8.6)	(6.6)	(4.5)
Additions to capitalized software costs				(3.5)	(1.8)	(2.5)
Purchases of intangible assets				(0.7)	(3.1)	(3.7)
Proceeds from sale of restricted investments				0.0	0.0	0.0
Purchase of restricted investments				(2.0)	0.0	0.0
Funding of intercompany note receivable				0.0
Proceeds from repayment of intercompany note receivable				0.0	0.0	0.0
Other, net				0.3	0.5	0.6
Net cash used in investing activities				(28.2)	(23.5)	(38.0)
Cash flows from financing activities:
Proceeds from bond issuance				0.0
Principal payments on debt, including pre-payments				0.0	0.0	0.0
Principal borrowings on intercompany note payable				64.0
Principal payments on intercompany notes payable				(93.0)	(87.0)	(51.0)
Borrowings on revolving credit facility				0.0	0.0	0.0
Payments on revolving credit facility				0.0	0.0	0.0
Principal payments under finance lease obligations					(5.3)	(4.1)
Principal payments under finance lease obligations				(7.9)
Debt amendment and issuance costs				0.0	0.0	0.0
Repurchases of common stock, including fees and expenses				0.0		0.0
Dividends paid on common stock				(0.1)	(0.1)	0.0
Purchase of equity interests in consolidated affiliates				0.0	0.0
Proceeds from exercising stock warrants						0.0
Distributions paid to noncontrolling interests of consolidated affiliates				0.0	0.0	0.0
Taxes paid on behalf of employees for shares withheld				(1.2)	(0.9)	(0.3)
Contributions from consolidated affiliates				0.0	0.0	0.0
Other, net				(3.9)	3.2	(0.7)
Change in intercompany advances				32.7	29.0	29.9
Net cash provided by (used in) financing activities				(9.4)	(61.1)	(26.2)
Increase in cash, cash equivalents, and restricted cash				10.3	7.9	(1.2)
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period			12.9	19.6	11.7	12.9
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period				29.9	19.6	11.7
Reconciliation of Cash, Cash Equivalents, and Restricted Cash
Cash and cash equivalents at beginning of period			12.9	19.6	11.7	12.9
Restricted cash at beginning of period			$ 0.0	0.0	0.0	0.0
Restricted cash included in other long-term assets at beginning of period				0.0
Cash and cash equivalents at end of period				29.9	19.6	11.7
Restricted cash at end of period				0.0	0.0	0.0
Restricted cash included in other long-term assets at end of period				0.0	0.0
Supplemental schedule of noncash financing activities:
Intercompany note activity				$ 232.9	$ 136.8	8.8
Conversion of convertible debt						$ 0.0