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Redeemable Noncontrolling Interests Redeemable Noncontrolling Interests - Textuals (Details) - USD ($) $ in Millions			3 Months Ended	6 Months Ended
	Jul. 23, 2019	Feb. 21, 2018	Sep. 30, 2019	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018	Dec. 31, 2014
Noncontrolling Interest [Line Items]
Document Period End Date				Jun. 30, 2019
Redeemable noncontrolling interests				$ 352.8		$ 261.7
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests		5.60%
Purchase of redeemable noncontrolling interests		$ 65.0		0.0	$ 65.1
EHHI [Member]
Noncontrolling Interest [Line Items]
Outstanding common stock of Holdings, Fair Value				$ 326.0
EHHI [Member] | Home Health and Hospice Segment [Member]
Noncontrolling Interest [Line Items]
Redeemable noncontrolling interests							$ 64.0
Subsidiary's common stock held by subsidiary 's management, Percent							16.70%
Subsequent Event [Member]
Noncontrolling Interest [Line Items]
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	5.60%
Purchase of redeemable noncontrolling interests			$ 163.0

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The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.

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The amount of subsidiary's common stock held by subsidiary 's management, Percent

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The cash outflow associated with the acquisition of or advances to an entity that is related to it but not strictly controlled (for example, an unconsolidated subsidiary, affiliate, and joint venture or equity method investment) or the acquisition of an additional interest in a subsidiary (controlled entity).

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As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

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Fair value of noncontrolling interests which are redeemable by the parent entity and classified as other equity.

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