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Value of equity interests (such as common shares, preferred shares, or partnership interest) issued or issuable to acquire the entity.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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Dividends received on equity and other investments during the current period.

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Millions						9 Months Ended
	Sep. 20, 2023	Sep. 01, 2023	Jul. 07, 2023	Apr. 30, 2023	Jan. 20, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Cash Flows [Abstract]
Equipment acquired and leasehold improvements						$ 50.2	$ 61.0
Santa Monica Imaging Group, LLC
Payments to acquire equity method investments		$ 32.0
Proceeds from Dividends Received		9.8
Book value of RadNet joint venture interests		$ 22.2
Quantib B.V.
Shares issued (in shares)					965,058
Equity interest issued, value assigned					$ 25.9
Quantib B.V. \| Stock Holdback
Shares issued (in shares)			113,303
Equity interest issued, value assigned			$ 3.5
Heart & Lung Imaging Limited \| Stock Holdback
Shares issued (in shares)	56,600
Equity interest issued, value assigned	$ 1.6
Aidence Holding B.V.
Shares issued (in shares)					1,141,234
Equity interest issued, value assigned					$ 30.6
Aidence Holding B.V. \| General Holdback
Shares issued (in shares)				144,227
Equity interest issued, value assigned				$ 4.0