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Acquisitions and Disposals - Other Acquisitions (Details) $ in Millions | 6 Months Ended
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Jun. 30, 2022 USD ($) non-controlling_interest | Jun. 30, 2021 USD ($)
Business Acquisition [Line Items] |  |
Payments to acquire equity method investments | $ | $ 65.8 | $ 0.0
Equity Method Investments |  |
Business Acquisition [Line Items] |  |
Number of non-controlling interests in surgical facilities acquired | 5 |
Number of non-controlling interests in in-development de novo surgical facilities acquired | 4 |

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585 + Details
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