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Organization and Summary of Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Revenues by Service Type
A summary of revenues by service type as a percentage of total revenues follows:
Year Ended December 31,
202220212020
Patient service revenues:
Surgical facilities revenues95.8 %95.7 %95.3 %
Ancillary services revenues2.7 %3.0 %3.4 %
Total patient service revenues98.5 %98.7 %98.7 %
Other service revenues1.5 %1.3 %1.3 %
Total revenues100.0 %100.0 %100.0 %
Schedule of Revenue Sources for Patient Service Revenues
The following table sets forth patient service revenues by type of payor and as a percentage of total patient service revenues for the Company's consolidated surgical facilities (dollars in millions):
Year Ended December 31,
202220212020
Amount%Amount%Amount%
Patient service revenues:
Private insurance$1,288.0 51.5 %$1,110.1 50.6 %$989.9 53.9 %
Government1,059.2 42.3 %949.9 43.3 %708.5 38.6 %
Self-pay65.9 2.6 %61.1 2.8 %58.5 3.2 %
Other (1)
89.0 3.6 %73.9 3.3 %79.2 4.3 %
Total patient service revenues2,502.1 100.0 %2,195.0 100.0 %1,836.1 100.0 %
Other service revenues (2)
37.2 30.1 24.0 
Total revenues$2,539.3 $2,225.1 $1,860.1 
(1)Other is comprised of anesthesia service agreements, auto liability, letters of protection and other payor types.
(2)Includes amounts attributable to related parties of $15.7 million, $9.3 million and $9.9 million for the years ended December 31, 2022, 2021 and 2020, respectively.
Schedule of Rollforward of Non-Controlling Interests - Redeemable
A summary of activity related to the non-controlling interests—redeemable for the years ended December 31, 2022 and 2021 is as follows (in millions):
December 31,
20222021
Balance at beginning of period$330.2 $306.8 
Net income attributable to non-controlling interests—redeemable44.5 48.9 
Acquisition and disposal of shares of non-controlling interests, net—redeemable10.4 17.9 
Distributions to non-controlling interest —redeemable holders(43.1)(43.4)
Balance at end of period$342.0 $330.2 
Schedule of Carrying Values and Estimated Fair Values of Debt Instruments
A summary of the carrying amounts and estimated fair values of the Company's long-term debt follows (in millions):
Carrying AmountFair Value
December 31,December 31,
2022202120222021
Senior secured term loan$1,370.0 $1,530.7 $1,359.7 $1,530.7 
6.750% senior unsecured notes due 2025
$185.0 $370.0 $183.4 $371.9 
10.000% senior unsecured notes due 2027
$320.0 $545.0 $326.8 $577.0