Basis of Presentation and New Accounting Pronouncements	6 Months Ended
Jun. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation and New Accounting Pronouncements	1. Basis of Presentation and New Accounting Pronouncements: The accompanying unaudited Consolidated Financial Statements of the Company and the notes thereto presented in this Form 10-Q have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission ("SEC") applicable to interim financial statements, and do not include all disclosures required by accounting principles generally accepted in the United States of America (“GAAP”) for complete financial statements. In the opinion of management, these financial statements include all adjustments, consisting only of normal recurring adjustments, necessary for a fair statement of the results of interim periods. The financial statements include all the accounts of Mednax, Inc. and its consolidated subsidiaries (collectively, “MDX”) together with the accounts of MDX’s affiliated business corporations or professional associations, professional corporations, limited liability companies and partnerships (the “affiliated professional contractors”). Certain subsidiaries of MDX have contractual management arrangements with its affiliated professional contractors, which are separate legal entities that provide physician services in certain states and Puerto Rico. The terms “Mednax” and the “Company” refer collectively to Mednax Inc., its subsidiaries and the affiliated professional contractors. The Company is a party to a joint venture in which it owns a 37.5% economic interest. The Company accounts for this joint venture under the equity method of accounting because the Company exercises significant influence over, but does not control, this entity. The Company is also a party to a joint venture in which it owns a 51% economic interest and for which it is deemed the primary beneficiary. The equity interest of the outside investor in the equity of this consolidated entity is accounted for and presented as noncontrolling interest on the Company’s Consolidated Balance Sheets. The results from operations attributable to the noncontrolling interest are presented separately on the Company’s Consolidated Statements of Income. The Company divested its anesthesiology services and radiology services medical groups in May 2020 and December 2020, respectively. The operating results of these medical groups are reported as discontinued operations in the Company’s Consolidated Statements of Income for the three months and six months ended June 30, 2020. The consolidated results of operations for the interim periods presented are not necessarily indicative of the results to be experienced for the entire fiscal year. In addition, the accompanying unaudited Consolidated Financial Statements and the notes thereto should be read in conjunction with the Consolidated Financial Statements and the notes thereto included in the Company’s most recent Annual Report on Form 10-K (the “Form 10-K”). New Accounting Pronouncements In December 2019, accounting guidance related to income taxes was issued with the goal of enhancing and simplifying various aspects of the income tax accounting guidance, including requirements related to hybrid tax regimes, deferred taxes on step-up in tax basis of goodwill obtained in a transaction that is not a business combination, separate financial statements of entities not subject to tax, the intraperiod tax allocation exception to the incremental approach, deferred tax liabilities on outside basis differences, and interim-period accounting for enacted changes in tax law and certain year-to-date loss limitations. The guidance became effective for us on January 1, 2021. The adoption of this guidance did not have a material impact on our consolidated financial statements and related disclosures.

The accompanying unaudited Consolidated Financial Statements of the Company and the notes thereto presented in this Form 10-Q have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission ("SEC") applicable to interim financial statements, and do not include all disclosures required by accounting principles generally accepted in the United States of America (“GAAP”) for complete financial statements. In the opinion of management, these financial statements include all adjustments, consisting only of normal recurring adjustments, necessary for a fair statement of the results of interim periods. The financial statements include all the accounts of Mednax, Inc. and its consolidated subsidiaries (collectively, “MDX”) together with the accounts of MDX’s affiliated business corporations or professional associations, professional corporations, limited liability companies and partnerships (the “affiliated professional contractors”). Certain subsidiaries of MDX have contractual management arrangements with its affiliated professional contractors, which are separate legal entities that provide physician services in certain states and Puerto Rico. The terms “Mednax” and the “Company” refer collectively to Mednax Inc., its subsidiaries and the affiliated professional contractors.

The Company is a party to a joint venture in which it owns a 37.5% economic interest. The Company accounts for this joint venture under the equity method of accounting because the Company exercises significant influence over, but does not control, this entity. The Company is also a party to a joint venture in which it owns a 51% economic interest and for which it is deemed the primary beneficiary. The equity interest of the outside investor in the equity of this consolidated entity is accounted for and presented as noncontrolling interest on the Company’s Consolidated Balance Sheets. The results from operations attributable to the noncontrolling interest are presented separately on the Company’s Consolidated Statements of Income.

The Company divested its anesthesiology services and radiology services medical groups in May 2020 and December 2020, respectively. The operating results of these medical groups are reported as discontinued operations in the Company’s Consolidated Statements of Income for the three months and six months ended June 30, 2020.

The consolidated results of operations for the interim periods presented are not necessarily indicative of the results to be experienced for the entire fiscal year. In addition, the accompanying unaudited Consolidated Financial Statements and the notes thereto should be read in conjunction with the Consolidated Financial Statements and the notes thereto included in the Company’s most recent Annual Report on Form 10-K (the “Form 10-K”).

New Accounting Pronouncements

In December 2019, accounting guidance related to income taxes was issued with the goal of enhancing and simplifying various aspects of the income tax accounting guidance, including requirements related to hybrid tax regimes, deferred taxes on step-up in tax basis of goodwill obtained in a transaction that is not a business combination, separate financial statements of entities not subject to tax, the intraperiod tax allocation exception to the incremental approach, deferred tax liabilities on outside basis differences, and interim-period accounting for enacted changes in tax law and certain year-to-date loss limitations. The guidance became effective for us on January 1, 2021. The adoption of this guidance did not have a material impact on our consolidated financial statements and related disclosures.