Envision Healthcare 10-Q 10 May 18 2018 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 04, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	Envision Healthcare Corporation
Entity Central Index Key	1,678,531
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus (Q1,Q2,Q3,FY)	Q1
Amendment Flag	false
Entity Common Stock, Shares Outstanding		121,128,363

Consolidated Balance Sheets (un

Consolidated Balance Sheets (unaudited) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 767.4	$ 312.2
Insurance collateral	113.5	86.2
Accounts receivable, net of allowance of $2,554.5 at December 31, 2017	1,532.8	1,405.8
Supplies inventory	22.1	22.7
Prepaid and other current assets	98.2	165.6
Current assets held for sale	0	2,751.8
Total current assets	2,534	4,744.3
Property and equipment, net	284	302.7
Investments in unconsolidated affiliates	157.4	156.7
Goodwill	7,570.7	7,536.1
Intangible assets, net	3,657.7	3,665.5
Other assets	180.7	167.3
Total assets	14,384.5	16,572.6
Current liabilities:
Current portion of long-term debt	12.7	52.1
Accounts payable	50.4	62.2
Accrued salaries and benefits	471	548
Accrued interest	35.1	52.1
Other accrued liabilities	549.1	281.6
Current liabilities held for sale	0	399.1
Total current liabilities	1,118.3	1,395.1
Long-term debt, net of deferred financing costs of $93.0 and $97.3, respectively	4,608.5	6,263.3
Deferred income taxes	902.8	1,089.3
Insurance reserves	323.5	318.5
Other long-term liabilities	155.6	149.9
Commitments and contingencies
Noncontrolling interests – redeemable	186.3	187.1
Equity:
Common stock, $0.01 par value, 1,000,000 shares authorized, 121,105 and 121,021 shares issued and outstanding, respectively	1.2	1.2
Additional paid-in capital	6,012.6	6,008.9
Retained earnings	436.9	521.2
Accumulated other comprehensive income (loss)	0.8	(4.2)
Total Envision Healthcare Corporation equity	6,451.5	6,527.1
Noncontrolling interests – non-redeemable	638	642.3
Total equity	7,089.5	7,169.4
Total liabilities and equity	$ 14,384.5	$ 16,572.6

Consolidated Balance Sheets (u3

Consolidated Balance Sheets (unaudited) (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Allowances for accounts receivable		$ 2,554.5
Deferred financing costs, net	$ 93	$ 97.3
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	121,105,000	121,021,000
Common stock, shares outstanding (in shares)	121,105,000	121,021,000

Consolidated Statements of Oper

Consolidated Statements of Operations (unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Revenues	$ 2,077	$ 2,855.8
Provision for uncollectibles (see Note 3)	0	(977.2)
Net revenue	2,077	1,878.6
Operating expenses:
Salaries and benefits	1,538.9	1,359
Supply cost	54.4	54.1
Insurance expense	47.6	37.6
Other operating expenses	190.8	184.1
Transaction and integration costs	21.4	21.5
Impairment charges	0.7	0.3
Depreciation and amortization	70.6	71.3
Total operating expenses	1,924.4	1,727.9
Net gain (loss) on disposals and deconsolidations	(1)	0.3
Equity in earnings of unconsolidated affiliates	5.8	4.9
Operating income	157.4	155.9
Interest expense, net	63.6	52.4
Other income (expense), net	(0.2)	1.1
Earnings from continuing operations before income taxes	93.6	104.6
Income tax expense	5.5	17.5
Net earnings from continuing operations	88.1	87.1
Discontinued operations:
Earnings from discontinued operations	3.5	10
Income tax expense from discontinued operations	(126.8)	(488.2)
Net loss from discontinued operations	(123.3)	(478.2)
Net loss	(35.2)	(391.1)
Less net earnings attributable to noncontrolling interests	51.2	54.1
Net loss attributable to Envision Healthcare Corporation stockholders	(86.4)	(445.2)
Preferred stock dividends	0	(2.3)
Net earnings (loss) attributable to Envision Healthcare Corporation common stockholders	(86.4)	(447.5)
Amounts attributable to Envision Healthcare Corporation common stockholders:
Earnings from continuing operations, net of income tax	36.9	30.7
Loss from discontinued operations, net of income tax	(123.3)	(478.2)
Net earnings (loss) attributable to Envision Healthcare Corporation common stockholders	$ (86.4)	$ (447.5)
Basic earnings (loss) per share attributable to common stockholders:
Net earnings from continuing operations (in dollars per share)	$ 0.31	$ 0.26
Net loss from discontinued operations (in dollars per share)	(1.02)	(4.10)
Net loss (in dollars per share)	(0.72)	(3.84)
Diluted earnings (loss) per share attributable to common stockholders:
Net earnings from continuing operations (in dollars per share)	0.30	0.26
Net loss from discontinued operations (in dollars per share)	(1.01)	(4.10)
Net loss (in dollars per share)	$ (0.71)	$ (3.84)
Weighted average number of shares and share equivalents outstanding:
Basic (in shares)	120,552	116,563
Diluted (in shares)	122,354	119,475

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net loss	$ (35.2)	$ (391.1)
Other comprehensive income, net of income tax:
Unrealized holding gain during the period, net of income tax	0.9	0.9
Comprehensive loss, net of income tax	(34.3)	(390.2)
Less comprehensive income attributable to noncontrolling interests	51.2	54.1
Comprehensive loss attributable to Envision Healthcare Corporation stockholders	$ (85.5)	$ (444.3)

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity (unaudited) - USD ($) $ in Millions	Total	Common Stock	Preferred Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Non-Controlling Interests - Non-Redeemable	Total equity (Permanent)	Non-controlling Interests - Redeemable (Temporary Equity)
Balance (in shares) at Dec. 31, 2016		117,478,000	1,725,000
Balance at Dec. 31, 2016		$ 1.2	$ 0.1	$ 5,976.3	$ 753.7	$ (0.2)	$ 656.8	$ 7,387.9	$ 182.9
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ (391.1)				(445.2)		18.8	(426.4)	35.3
Issuance of restricted stock (in shares)		21,000
Stock options exercised (in shares)		149,000
Stock options exercised				1.1				1.1
Stock repurchased (in shares)		(128,000)
Stock repurchased				(8.7)				(8.7)
Share-based compensation				16.1				16.1
Dividends paid on preferred stock					(2.3)			(2.3)
Acquisitions and other transactions impacting noncontrolling interests				0.6			13	13.6	0
Distributions to noncontrolling interests, net of capital contributions							(23.6)	(23.6)	(36)
Disposals and other transactions impacting noncontrolling interests				(2.6)			(7.6)	(10.2)	0.4
Unrealized holding gain on investments, net of income tax	0.9					0.9		0.9
Balance (in shares) at Mar. 31, 2017		117,520,000	1,725,000
Balance at Mar. 31, 2017		$ 1.2	$ 0.1	5,982.8	306.2	0.7	657.4	6,948.4	182.6
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cumulative effect of accounting change					2.1	(1.6)		0.5
Balance (in shares) at Dec. 31, 2017		121,021,000	0
Balance at Dec. 31, 2017	7,169.4	$ 1.2	$ 0	6,008.9	521.2	(4.2)	642.3	7,169.4	187.1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	$ (35.2)				(86.4)		18.5	(67.9)	32.7
Issuance of restricted stock (in shares)		139,000
Stock options exercised (in shares)	38,611	39,000
Stock options exercised				0.3				0.3
Stock repurchased (in shares)		(94,000)
Stock repurchased				(6.3)				(6.3)
Share-based compensation				7.4				7.4
Acquisitions and other transactions impacting noncontrolling interests				3.5			(4.7)	(1.2)	0
Distributions to noncontrolling interests, net of capital contributions							(18.9)	(18.9)	(33.9)
Disposals and other transactions impacting noncontrolling interests				(1.2)		5.7	0.8	5.3	0.4
Unrealized holding gain on investments, net of income tax	$ 0.9					0.9		0.9
Balance (in shares) at Mar. 31, 2018		121,105,000	0
Balance at Mar. 31, 2018	$ 7,089.5	$ 1.2	$ 0	$ 6,012.6	$ 436.9	$ 0.8	$ 638	$ 7,089.5	$ 186.3

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net loss	$ (35.2)	$ (391.1)
Adjustments to reconcile net loss to net cash flows provided by operating activities:
Depreciation and amortization	100	105.5
Amortization of deferred loan costs	4.3	4.2
Provision for uncollectibles	0	1,196.2
Net (gain) loss on disposals and deconsolidations	1	(0.3)
Share-based compensation	7.4	16.1
Deferred income taxes	27.9	504.2
Equity in earnings of unconsolidated affiliates	(5.8)	(5.1)
Impairment charges	0.7	0.3
Gain on held for sale assets	(14.7)	0
Increases (decreases) in cash, cash equivalents, restricted cash, and restricted cash equivalents net of acquisitions and dispositions:
Accounts receivable	(40.5)	(1,243.2)
Supplies inventory	0.2	(0.7)
Prepaid and other current assets	(2.3)	1.9
Accounts payable	(22.6)	(8.9)
Accrued expenses and other liabilities	23	(84.7)
Other, net	(6.1)	3.7
Net cash flows provided by operating activities	37.3	98.1
Cash flows from investing activities:
Acquisitions and related expenses, net of cash acquired	(71.6)	(73.1)
Acquisition of property and equipment	(45.3)	(40.7)
Net proceeds from sale of medical transportation business	2,279.7	0
Purchases of marketable securities	(57.3)	(3.4)
Maturities of marketable securities	17.2	0.5
Other, net	1.1	17.3
Net cash flows provided by (used in) investing activities	2,123.8	(99.4)
Cash flows from financing activities:
Proceeds from long-term borrowings	125.5	3.7
Repayment on long-term borrowings	(1,824.2)	(11.9)
Distributions to noncontrolling interests	(53.1)	(60.5)
Other, net	(6.3)	(8.4)
Net cash flows used in financing activities	(1,758.1)	(77.1)
Net increase (decrease) in cash, cash equivalents, and restricted cash	403	(78.4)
Cash and cash equivalents, beginning of period (including restricted cash and restricted cash equivalents of $30.8 and $28.8, respectively)	383	360.4
Less cash, cash equivalents, restricted cash and restricted cash equivalents of held for sale assets, end of period	0	17.7
Cash and cash equivalents, end of period (including restricted cash and restricted cash equivalents of $18.6 and $39.0, respectively)	$ 786	$ 264.3

Consolidated Statements of Cas8

Consolidated Statements of Cash Flows (unaudited) (Parenthetical) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Statement of Cash Flows [Abstract]
Restricted cash and cash equivalents	$ 18.6	$ 30.8	$ 39	$ 28.8

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation Basis of Presentation These unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial reporting and in accordance with Rule 10-01 of Regulation S-X. In the opinion of management, the unaudited interim consolidated financial statements contained in this report reflect all normal recurring adjustments, which are necessary for a fair presentation of the financial position and the results of operations for the interim periods presented. The results of operations for any interim period are not necessarily indicative of results for the full year. The accompanying unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2017 . Cash and Cash Equivalents Cash and cash equivalents are comprised principally of demand deposits at banks and other highly liquid short-term investments with maturities generally three months or less when purchased. Cash and cash equivalents are reflected in the financial statements at cost, which approximates fair value. Restricted Cash and Marketable Securities As of March 31, 2018 and December 31, 2017 , the Company held restricted cash and cash equivalents of $18.6 million and $30.8 million , respectively, classified within insurance collateral in the accompanying consolidated balance sheets. The cash was restricted for the purpose of satisfying the obligations of the Company's wholly owned captive insurance companies. Supplemental Cash Flow Data The following presents supplemental cash flow statement disclosure (in millions): Three Months Ended March 31, 2018 2017 Supplemental cash flow information: Interest payments $ 94.9 $ 87.1 Income tax paid, net of refunds $ (0.5 ) $ 5.3 Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Reclassifications Certain prior year amounts in the accompanying consolidated financial statements and these notes have been reclassified to conform to the current period presentation and prior annual period presentations. Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2014-09 “Revenue from Contracts with Customers,” Accounting Standards Codification (ASC) as topic 606 (ASC 606), which eliminated the transaction and industry-specific revenue recognition guidance under current GAAP and replaced it with a principle-based approach using the following steps: identify the contract(s) with a customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract and recognize revenue when (or as) the entity satisfies a performance obligation. The Company adopted the new standard effective January 1, 2018 using the modified retrospective method. As a result of using this approach, the Company recognized the cumulative effect adjustment to increase retained earnings $0.5 million for initial application of the guidance at the date of initial adoption. The adoption of the standard did not have a material impact on the Company's consolidated financial position, results of operations or cash flows. In February 2016, the FASB issued ASU No. 2016-02, “Leases,” and subsequently ASU No. 2017-13, which amend existing accounting standards for lease accounting, including requiring lessees to recognize most leases on the balance sheet and making changes to lessor accounting. The standard is effective for annual periods beginning after December 15, 2018, with early adoption permitted. The new standard requires a modified retrospective application for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. The Company will adopt the new standard effective January 1, 2019. The Company expects that nearly all leases currently classified as operating leases will be classified as operating leases under the new standard with a right-of-use asset and a corresponding obligation recognized on the balance sheet at the adoption date. The Company has not yet determined the impact this ASU will have on the Company's consolidated financial position, results of operations or cash flows. In January 2016, the FASB issued ASU 2016-01, "Financial Instruments - Overall," as amended by ASU 2018-03, "Technical Corrections and Improvements to Financial Instruments (Subtopic 825-10) – Recognition and Measurement of Financial Assets and Financial Liabilities” in February 2018, which among other changes in accounting and disclosure requirements, replaces the cost method of accounting for non-marketable equity securities with a model for recognizing impairments and observable price changes, and also eliminates the available-for-sale classification for marketable equity securities. Under the new guidance, other than when the consolidation or equity method of accounting is utilized, changes in the fair value of equity securities are to be recognized in earnings. The Company adopted the provisions of ASU 2016-01 and ASU 2018-03 as of January 1, 2018 resulting in a cumulative effect adjustment to retained earnings related to the unrealized gain on corporate equity securities. The adjustment of $1.6 million was reclassified out of accumulated other comprehensive income (loss) and into retained earnings. Prior to adoption, the corporate equity securities related unrealized gains and losses were reported as a separate component of accumulated other comprehensive income (loss). Effective January 1, 2018 the change in fair value on corporate equity securities is reported as a component of other income (expense), net in the accompanying consolidated statements of operations. In January 2017, the FASB issued ASU 2017-01, “Business Combinations (Topic 805) - Clarifying the Definition of a Business,” which changes the definition of a business to assist entities with evaluating when a set of transferred assets and activities is a business. The guidance requires an entity to evaluate if substantially all of the fair value of gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets. The guidance is effective for annual periods beginning after December 15, 2017, and interim periods within those years. The Company adopted ASU 2017-01 as of January 1, 2018. This standard did not have an impact on our consolidated financial statements, results of operations or cash flows upon adoption. Effective January 1, 2018, the Company retrospectively adopted a change in accounting principle related to the adoption of ASU No. 2016–18, Statement of Cash Flows (Topic 230)—Restricted Cash—a consensus of the FASB Emerging Issues Task Force. This revised standard is an effort by the FASB to reduce diversification in practice by providing specific guidance on the presentation of restricted cash or restricted cash equivalents in the statement of cash flows. The updated guidance requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash and restricted cash equivalents. As such, amounts generally described as restricted cash and restricted cash equivalents should be included in the “beginning–of–period” and “end–of–period” total amounts shown on the statement of cash flows. Accordingly, upon adoption the Company used the retrospective transition method by restating its consolidated statements of cash flows to include restricted cash of $28.8 million in the beginning and $39.0 million in the ending cash, cash equivalents, and restricted cash balances for the three months ended March 31, 2017 . In February 2018, the FASB issued ASU No. 2018-02, "Income Statement – Reporting Comprehensive Income (Topic 220) - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income," which will allow a reclassification from accumulated other comprehensive income (loss) to retained earnings for the tax effects resulting from the Tax Cuts and Jobs Act (the Act) that are stranded in accumulated other comprehensive income (loss). This standard also requires certain disclosures about stranded tax effects. ASU 2018-02, however, does not change the underlying guidance that requires that the effect of a change in tax laws or rates be included in income from continuing operations. The standard is effective for annual periods beginning after December 15, 2018, with early adoption permitted for interim periods within those years. The Company adopted ASU 2018-02 as of January 1, 2018. This standard did not have an impact on our consolidated financial statements, results of operations or cash flows upon adoption. In March 2018, the FASB issued ASU 2018-05, "Income Taxes (Topic 740) - Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118 (SAB 118)." The standard amends ASC 740, Income Taxes to provide guidance on accounting for the tax effects of the Tax Cuts and Jobs Act of 2017 pursuant to SAB 118. The guidance allows a company to record a provisional amount when it does not have the necessary information available, prepared, or analyzed in reasonable detail to complete its accounting for the change in the tax law. The measurement period ends when the company has obtained, prepared and analyzed the information necessary to finalize its accounting, but cannot extend beyond one year. Additional information regarding the adoption of this standard is contained in Note 14 .

Variable Interest Entities

Variable Interest Entities	3 Months Ended
	Mar. 31, 2018
Variable Interest Entity, Measure of Activity [Abstract]
Variable Interest Entities	Variable Interest Entities GAAP requires variable interest entities (VIEs) to be consolidated if an entity’s interest in the VIE is a controlling financial interest. Under the variable interest model, a controlling financial interest is determined based on which entity, if any, has (i) the power to direct the activities of the VIE that most significantly impacts the VIEs economic performance and (ii) the obligations to absorb the losses that could potentially be significant to the VIE or the right to receive benefits from the VIE that could potentially be significant to the VIE. The Company performs ongoing reassessments of (i) whether entities previously evaluated under the majority voting-interest framework have become VIEs, based on certain triggering events, and therefore would be subject to the VIE consolidation framework, and (ii) whether changes in the facts and circumstances regarding the Company’s involvement with a VIE cause the Company’s consolidation conclusion to change. The consolidation status of the VIEs with which the Company is involved may change as a result of such reassessments. Changes in consolidation status are applied prospectively with assets and liabilities of a newly consolidated VIE initially recorded at fair value. Physician Services Segment The physician services segment structures its contractual arrangements for services in various ways. In most states, a wholly owned subsidiary contracts with hospitals to provide management services. The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries along with the accounts of affiliated professional corporations (PCs) with which the Company has management arrangements. The Company's agreements with these PCs provide that the term of the arrangements is permanent, subject only to termination by the Company, except in the case of gross negligence, fraud or bankruptcy of the Company. The PC structure is necessary in states which prohibit the corporate practice of medicine but this structure is utilized by the Company in the majority of its physician practices regardless of the state where the PC operates. The arrangements are captive in nature as a majority of the outstanding voting equity instruments of the PCs are owned by nominee shareholders appointed at the sole discretion of the Company. The nominee shareholder is a medical doctor who is generally a senior corporate employee of the Company. The Company has a contractual right to transfer the ownership of the PCs at any time to any person it designates as the nominee shareholder. The Company has the right to all assets and to receive income, both as ongoing fees and as proceeds from the sale of any interest in the PCs, in an amount that fluctuates based on the performance of the PCs and the change in the fair value of the interest in the PCs. The Company has exclusive responsibility for the provision of all non-medical services required for the day-to-day operation and management of the PCs and establishes the guidelines for the employment and compensation of the physicians and other employees of the PCs, which is consistent with the operation of the Company's wholly owned subsidiaries. Based on the provisions of these agreements, the Company has determined that the PCs are variable interest entities and that the Company is the primary beneficiary as defined in ASC 810 “Consolidations.” The Company has a variable interest in the PCs through the management contracts and the PCs are considered VIEs due to its equity holder lacking the obligation to absorb expected losses or receive expected residual returns. The contractual arrangement to provide management services allows the Company to direct the economic activities considered most significant to the PC. Accordingly, the Company is the primary beneficiary of the PCs and consolidates the PCs under the variable interest model in ASC 810. The physician services segment also has partnerships with health systems that are considered VIEs. The Company consolidates the majority of the partnerships with health systems as the Company is the primary beneficiary due to its ability to direct the majority of activities that most significantly impact the economic performance of the partnership, which generally occurs through a management services agreement. Therefore, the results of consolidated partnerships are reflected as a component of the accompanying consolidated balance sheets, statements of operations and statements of cash flows. March 31, 2018 and December 31, 2017 , were $1.29 billion and $1.56 billion , respectively, and the total liabilities of the consolidated VIEs were $1.06 billion and $1.31 billion , respectively. Included in total assets as of March 31, 2018 and December 31, 2017 were $261.1 million and $248.4 million , respectively, of assets which were restricted as to use due to the Company's ownership percentage in certain of the partnerships with health systems and could only be used to settle the obligations of the VIEs. The creditors of the consolidated VIEs within the physician services segment have no recourse to the Company. Ambulatory Services Segment The Company, through its wholly owned subsidiaries, owns interests, primarily 51% , in limited liability companies (LLCs) and limited partnerships (LPs) which own and operate ambulatory surgery centers (ASCs or surgery centers). The Company has variable interests in the LLCs and LPs through its equity ownership interests. Each LLC and LP is considered a VIE due to its structure as a limited partnership or functional equivalent under ASU No. 2015-02. For those LLCs and LPs which the Company consolidates, the Company is considered the primary beneficiary due to the partnership agreements allowing the Company to govern the day-to-day activities and thereby control the most significant economic activities. The total assets (excluding goodwill and intangible assets, net) of the consolidated VIEs within the ambulatory services segment, which are included in the accompanying consolidated balance sheets, as of March 31, 2018 and December 31, 2017 , were $362.3 million and $375.3 million , respectively, and the total liabilities of the consolidated VIEs were $119.5 million and $119.8 million , respectively. Included in total assets as of March 31, 2018 and December 31, 2017 , were $172.0 million and $178.4 million of assets, which were restricted as to use due to the Company's ownership percentage in these entities and could only be used to settle the obligations of the VIEs. The creditors of the VIEs have no recourse to the Company, with the exception of $22.1 million and $19.3 million of debt guaranteed by the Company at March 31, 2018 and December 31, 2017 , respectively. Unconsolidated Variable Interest Entities The Company also has certain equity interests in unconsolidated affiliates which meet the definition of a VIE. The Company has a variable interest in 32 LLCs and LPs through its equity interests; however, the Company is not the primary beneficiary of these entities as it does not have the power to direct the activities that most significantly impact the entities' economic performance as a result of the Company's shared or lack of control. In each of the investments, the Company is not obligated to contribute any additional capital beyond its initial contribution and its maximum exposure to loss is limited to the initial capital contribution. As a result, the Company has accounted for these investments under the equity method of accounting and net earnings or loss from these investments is included in equity in earnings of unconsolidated affiliates in the accompanying consolidated statements of operations. See Note 8 for further information. The Company recognized management and billing fees associated with these investments totaling $1.8 million and $1.7 million during the three months ended March 31, 2018 and 2017 , respectively, which are included in net revenue in the accompanying consolidated statements of operations. The Company has also recorded receivables from these entities in the amount of $3.8 million and $3.9 million as of March 31, 2018 and December 31, 2017 , respectively. These receivables are included in the other current assets in the accompanying consolidated balance sheets.

Revenue Recognition and Account

Revenue Recognition and Accounts Receivable	3 Months Ended
	Mar. 31, 2018
Revenue Recognition [Abstract]
Revenue Recognition and Accounts Receivable	Revenue Recognition and Accounts Receivable Revenue Recognition On January 1, 2018 the Company adopted ASC 606. The presentation of the amount of earnings from operations and net earnings were unchanged upon adoption of the new standard; however, adoption of the new standard resulted in changes to the presentation of revenues and the provision for uncollectibles in the consolidated statements of operations. Previously, the estimate for unrealizable amounts was recorded to the provision for uncollectibles and presented as a separate deduction to arrive at net revenue. Upon adoption, the estimate for unrealizable amounts is now reflected as implicit price concession as a reduction to arrive at net revenue. The majority of our revenue is generated from fee for service patient revenue, which is derived principally through contracts originating from the provision of physician services during episodes of care to patients of healthcare facilities and from facility fees for procedures performed at surgery centers. These episodes of care and procedures qualify as distinct goods and services, provided simultaneously together with other readily available resources, in a single instance of service, and thereby constitute a single performance obligation for each patient encounter and, in most instances, occur at readily determinable transaction prices. As a practical expedient, the Company adopted a portfolio approach to sources of patient revenue, applied by specialty to each healthcare facility or surgery center. At this level, each portfolio shares the characteristics conducive to ensuring that the results do not materially differ from the new standard if it were to be applied to individual patient contracts related to each episode of care. Accordingly, there was not a change in the Company's method to recognize revenue. Additionally, through practical expedients, the Company did not adjust the transaction price for any financing components as those were deemed to be insignificant and expensed all incremental customer contract acquisition costs as incurred as such costs are not material and would be amortized over a period less than one year. Subsequent changes that are determined to be a result of an adverse change in the customer's ability to pay, are recorded as bad debt within other operating expenses. Due to the nature of ambulatory services segment, the Company has the ability to assess the ultimate collection for substantially all of the patient service revenue before services are provided as those services are pre-scheduled and non-emergent. Contract and other revenue primarily represents income earned from healthcare facilities and medical centers to supplement third-party and patient reimbursement and contract staffing assignments. The transaction price for these arrangements may be fixed or variable, with determination periods ranging from one month to 18 months. In these instances, the Company will estimate variable compensation at contract commencement and recognize revenue monthly on a straight-line basis, which correlates with the performance obligation to stand ready. Estimating net revenue is a complex process, largely due to the volume of transactions, the number and complexity of contracts with payors, the limited availability, at times, of certain patient and payor information at the time services are provided, and the length of time it takes for collections to fully mature. Patients are billed for services provided, and the Company receives payments for these services from patients or their third-party payors. Payments for services provided are generally less than billed charges. The Company recognizes fee for service revenue, net of contractual adjustments and discounts for uninsured patients, at the time services are provided by healthcare providers. In the period services are provided, the Company estimates gross charges based on billed services plus an estimate for unbilled services based on pending case data collected, estimates contractual allowances based on contracted rates and historical or actual cash collections (net of recoveries), when available, and estimates the discount for uninsured patients based on historical cash collections (net of recoveries) from uninsured patients. For third-party payors, the specific benefits provided for under each patients’ healthcare plan, mandated payment rates under the Medicare and Medicaid programs, as applicable, and historical cash collections are utilized. These expected collections are based on fees and negotiated payment rates in the case of third-party payors, the specific benefits provided for under each patient's healthcare plans, mandated payment rates in the case of Medicare and Medicaid programs, and historical cash collections (net of recoveries) in combination with expected collections from third party payors. In addition, the Company records net revenue from uninsured patients at an estimated realizable value based on historical cash collections (net of recoveries). The price concession includes an estimate of uncollectible balances due from uninsured patients, uncollectible co-pay and deductible balances due from insured patients and special charges, if any, for uncollectible balances due from managed care, commercial and governmental payors. The relationship between gross charges and the transaction price recognized is significantly influenced by payor mix, as collections on gross charges may vary significantly depending on whether and with whom the patients the Company provides services to in the period are insured and the Company's contractual relationships with those payors. Payor mix is subject to change as additional patient and payor information is obtained after the period services are provided. The Company periodically assesses the estimates of unbilled revenue, contractual adjustments and discounts for uninsured patients and payor mix for a period of at least one year following the date of service by analyzing actual results, including cash collections, against estimates. Changes in these estimates are charged or credited to the consolidated statement of operations in the period that the assessment is made. Significant changes in payor mix, contractual arrangements with payors, specialty mix, acuity, business office operations, general economic conditions and health care coverage provided by federal or state governments or private insurers may have a significant impact on estimates and significantly affect the results of operations and cash flows. Concentration of credit risk with respect to other payors is limited due to the large number of such payors. In certain circumstances, federal law requires providers to render emergency medical services to any patient who requires care regardless of their ability to pay. Services to these patients are not considered to be charity care and provisions for uncompensated care for these services are estimated accordingly. Although the Company provides a level of charity care, it is not significant to the Company's net revenues. The Company's billing and accounting systems provide historical trends of cash collections and contractual write-offs, accounts receivable agings and established fee adjustments from third-party payors. These estimates are recorded and monitored monthly as revenues are recognized. These estimates are not, however, established from billing system generated contractual adjustments based on fee schedules for the patient’s insurance plan for each patient encounter. The principal exposure for uncollectible fee for service visits is from self-pay patients and, to a lesser extent, for co-payments and deductibles from patients with insurance. Net revenue (after provision for uncollectibles in 2017) by the Company's segments consists of the following major payors (in millions): Three Months Ended March 31, 2018 Physician Services Ambulatory Services Total Medicare $ 324.1 18 % $ 69.4 23 % $ 393.5 19 % Medicaid 137.8 8 6.6 2 144.4 7 Commercial and managed care 1,007.3 57 183.8 60 1,191.1 57 Self-pay 33.2 2 41.4 13 74.6 4 Net fee for service revenue 1,502.4 85 301.2 98 1,803.6 87 Contract and other revenue 267.0 15 6.4 2 273.4 13 Net revenue $ 1,769.4 100 % $ 307.6 100 % $ 2,077.0 100 % Three Months Ended March 31, 2017 Physician Services Ambulatory Services Total Medicare $ 316.5 20 % $ 74.7 24 % $ 391.2 21 % Medicaid 120.4 8 7.7 2 128.1 7 Commercial and managed care 880.5 56 192.9 61 1,073.4 57 Self-pay 23.6 2 34.7 11 58.3 3 Net fee for service revenue 1,341.0 86 310.0 98 1,651.0 88 Contract and other revenue 221.7 14 5.9 2 227.6 12 Net revenue $ 1,562.7 100 % $ 315.9 100 % $ 1,878.6 100 % Accounts Receivable The Company manages accounts receivable by regularly reviewing its accounts and contracts and by providing appropriate adjustments to the estimate of the transaction price. Some of the factors considered by management in determining the adjustments are the historical trends of cash collections, contractual and uninsured write-offs, accounts receivable agings, established fee schedules, contracts with payors, changes in payor mix and procedure statistics. Actual collections of accounts receivable in subsequent periods may require changes in the estimated transaction price. The Company tests its analysis by comparing cash collections to net fee for service revenues and monitoring self-pay utilization. In addition, when actual collection percentages differ from expected results, on a contract by contract basis, supplemental detailed reviews of the outstanding accounts receivable balances may be performed by the Company’s billing operations to determine whether there are facts and circumstances existing that may cause a different conclusion as to the estimate of the collectability of that contract’s accounts receivable from the estimate resulting from using the historical collection experience. The Company also supplements its analysis for its physician services segment quarterly using a hindsight calculation that utilizes write-off data for all payor classes during the previous twelve month period to estimate adjustments to the transaction price at a point in time. Changes in these estimates, if any, are charged or credited to the consolidated statements of operations in the period of change. Material changes in estimates may result from unforeseen write-offs of patient or third-party accounts receivable, unsuccessful disputes with managed care payors, adverse macro-economic conditions which limit patients’ ability to meet their financial obligations for the care provided by physicians, or broad changes to government regulations that adversely impact reimbursement rates for services provided by the Company. Significant changes in payor mix, changes in contractual arrangements with payors, business office operations, general economic conditions and health care coverage provided by federal or state governments or private insurers may have a significant impact on the Company’s estimates and significantly affect its results of operations and cash flows. Concentration of credit risk is limited by the diversity and number of facilities, patients, payors and by the geographic dispersion of the Company’s operations.

Acquisitions and Disposals

Acquisitions and Disposals	3 Months Ended
	Mar. 31, 2018
Business Combinations [Abstract]
Acquisitions and Disposals	Acquisitions and Disposals The Company accounts for its business combinations under the fundamental requirements of the acquisition method of accounting and under the premise that an acquirer be identified for each business combination. The acquirer is the entity that obtains control of one or more businesses in the business combination and the acquisition date is the date the acquirer achieves control. The assets acquired, liabilities assumed and any noncontrolling interests in the acquired business at the acquisition date are recognized at their fair values as of that date, and the direct costs incurred in connection with the business combination are recorded and expensed separately from the business combination. Acquisitions in which the Company is able to exert significant influence but does not have control are accounted for using the equity method. Physician Services Activity The Company, through wholly owned subsidiaries, completed the acquisition of two physician practices in the three months ended March 31, 2018 and three physician practices in the three months ended March 31, 2017 . The aggregate amount paid for the physician practices and for settlement of purchase price payable obligations during the three months ended March 31, 2018 and 2017 was approximately $70.2 million and $55.4 million , respectively, and was paid in cash and funded by either operating cash flow or borrowings under the Company's credit agreement or a combination thereof. Ambulatory Services Activity During the three months ended March 31, 2018 , the Company did no t acquire any surgery centers. During the three months ended March 31, 2017 , the Company, through wholly-owned subsidiaries, acquired a controlling interest in two surgery centers. The aggregate amount paid for the centers and for settlement of purchase price payable obligations during the three months ended March 31, 2017 was approximately $17.7 million , and was paid in cash and funded by either operating cash flow or borrowings under the Company's credit agreement or a combination thereof. During the three months ended March 31, 2018 , the Company disposed of three surgery centers. The Company recognized a net loss from the disposals of $1.7 million . During the three months ended March 31, 2017 , the Company did no t dispose of any surgery centers. Purchase Price Allocations Acquired assets and assumed liabilities include, but are not limited to, accounts receivable, fixed assets, intangible assets, deferred income taxes and insurance liabilities. The valuations are based on appraisal reports, discounted cash flow analyses, actuarial analyses or other appropriate valuation techniques to determine the fair value of the assets acquired or liabilities assumed. A majority of the deferred income taxes recognized as a component of the Company's purchase price allocation is a result of the difference between the book and tax basis of the intangible assets recognized. The acquisition date fair value of the total consideration transferred and acquisition date fair value of each major financial class for individual acquisitions completed in the three months ended March 31, 2018 , including post acquisition date adjustments, are as follows (in millions): Accounts receivable $ 2.3 Goodwill 38.5 Intangible assets 33.8 Other accrued liabilities (1.0 ) Deferred income taxes (2.3 ) Other long-term liabilities (1.1 ) Acquisition date fair value of total consideration transferred $ 70.2 Represents the preliminary allocation of fair value of acquired assets and liabilities associated with these acquisitions at March 31, 2018 . During the three months ended March 31, 2018 , no significant changes were made to the purchase price allocation of assets and liabilities, existing at the date of acquisition, related to individual acquisitions completed in 2017 . For the three months ended March 31, 2018 and 2017 approximately $26.0 million and $23.4 million , respectively, of goodwill recorded was deductible for tax purposes. The total fair value of acquisitions completed by the Company include amounts allocated to goodwill, which result from the acquisitions' favorable reputations in their markets, their market positions and their ability to deliver quality care with high patient satisfaction consistent with the Company’s business model. Fair value attributable to noncontrolling interests is based on significant inputs that are not observable in the market. Key inputs used to determine the fair value include financial multiples used in the purchase of noncontrolling interests primarily from acquisitions of centers. Such multiples, based on earnings, are used as a benchmark for the discount to be applied for the lack of control or marketability. The fair value of noncontrolling interests for acquisitions where the purchase price allocation is not finalized may be subject to adjustment as the Company completes its initial accounting for acquired intangible assets. Additionally, the Company continues to obtain information relative to the fair values of assets acquired, liabilities assumed and any noncontrolling interests with acquisitions completed in the last 12 months. Acquired assets and assumed liabilities include, but are not limited to, accounts receivable, fixed assets, intangible assets, deferred income taxes and insurance liabilities. The valuations are based on appraisal reports, discounted cash flow analyses, actuarial analyses or other appropriate valuation techniques used to determine the fair value of the assets acquired or liabilities assumed. A majority of the deferred income taxes recognized as a component of the Company's purchase price allocation is a result of the difference between the book and tax basis of the amortizable intangible assets recognized. The amount allocated to the deferred income tax liability is subject to change as a result of the final allocation of purchase price to amortizable intangibles. The Company expects to finalize the purchase price allocation for its most recent acquisitions as soon as practical. During the three months ended March 31, 2018 and March 31, 2017 , the Company incurred approximately $21.4 million and $21.5 million of transaction and integration costs, respectively. Such amounts excluded financing costs that were capitalized or debt extinguishment costs that were expensed as part of the financing transactions associated with acquisitions.

Discontinued Operations

Discontinued Operations	3 Months Ended
	Mar. 31, 2018
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	Discontinued Operations On March 14, 2018, the Company completed the divestiture of its medical transportation business to an entity controlled by funds affiliated with KKR & Co. L.P. for approximately $2.28 billion in net cash proceeds. Accordingly, during the three months ended March 31, 2018 , the Company recorded a gain of $14.7 million in discontinued operations upon the completion of the transaction. All historical operating results for the medical transportation business are reflected within discontinued operations in the consolidated statements of operations. At the date of the sale, as required by ASC 740, "Accounting for Income Taxes," after all deferred tax liabilities were reversed against the tax basis gain on sale, a one-time permanent book-tax difference of $127.1 million was recorded. Furthermore, all assets and liabilities associated with the medical transportation business were classified as assets and liabilities held for sale in our consolidated balance sheet for the year ended December 31, 2017 . The following table summarizes the results of discontinued operations for the three months ended March 31, 2018 and 2017 (in millions): Three Months Ended March 31, 2018 (1) 2017 Net revenues $ 511.7 $ 593.5 Operating expenses: Salaries and benefits 289.0 337.9 Supply cost 12.0 13.9 Insurance expense 22.2 18.7 Other operating expenses 137.8 152.3 Transaction and integration costs 14.8 4.3 Depreciation and amortization 29.4 34.2 Total operating expenses 505.2 561.3 Equity in earnings of unconsolidated affiliates 0.1 0.2 Gain on assets held for sale 14.7 — Operating income 21.3 32.4 Interest expense, net 17.8 22.4 Earnings before income taxes $ 3.5 $ 10.0 Results of discontinued operations: Earnings from discontinued operations $ 3.5 $ 10.0 Income tax expense of discontinued operations (126.8 ) (488.2 ) Net loss from discontinued operations $ (123.3 ) $ (478.2 ) (1) January 1, 2018 through March 14, 2018 In accordance with ASC 205, “Presentation of Financial Statements”, for purposes of discontinued operations presentation, general corporate expenses are not permitted to be allocated to the operations of a business to be disposed. Accordingly, for the three months ended March 31, 2018 and 2017 on a before tax basis, approximately $2.5 million and $14.5 million , respectively, of general corporate expenses, including allocations for corporate salaries and stock-based compensation, general and administrative costs and depreciation, were removed from the medical transportation business and reallocated to the Company's remaining segments. In addition, ASC 205 requires interest associated with debt that is required to be repaid as a result of the disposal transaction to be allocated to discontinued operations. Accordingly, during the three months ended March 31, 2018 and 2017 , the Company allocated $17.6 million and $21.8 million , respectively, in interest expense to the medical transportation business, which is reflected in the loss from discontinued operations. The Company estimated the interest allocation by applying the effective interest rate of the Company's Term Loan B 2023 by the estimated proceeds, net of taxes and professional fees. For the three months ended March 31, 2018 and 2017 , the net cash flows provided by operating activities attributable to discontinued operations were $77.4 million and $29.0 million , respectively, and the net cash flows used in investing activities attributable to discontinued operations were $23.9 million and $8.7 million , respectively.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The fair value of a financial instrument is the amount at which the instrument could be exchanged in an orderly transaction between market participants to sell the asset or transfer the liability. The inputs used by the Company to measure fair value are classified into the following hierarchy: Level 1: Quoted prices in active markets for identical assets or liabilities. Level 2: Inputs other than quoted prices included in Level 1 that are observable for the asset or liability through corroboration with market data at the measurement date. Level 3: Unobservable inputs that reflect management’s best estimate of what market participants would use in pricing the asset or liability at the measurement date. In determining the fair value of assets and liabilities that are measured on a recurring basis at March 31, 2018 and December 31, 2017 , with the exception of contingent purchase price payables, the Company utilized Level 1 and 2 inputs to perform such measurements methods, which were commensurate with the market approach. The Company utilizes Level 3 inputs to measure the fair value of the contingent consideration. The fair value was determined utilizing future forecasts of both earnings and other performance metrics which are expected to be achieved during the performance period, in accordance with each respective purchase agreement. There were no significant transfers to or from Levels 1 and 2 during the three months ended March 31, 2018 . The Company's non-patient receivables and accounts payable are reflected in the financial statements at cost, which approximates fair value. The following table summarizes the valuation of the Company’s financial instruments by the above fair value hierarchy levels as of March 31, 2018 and December 31, 2017 (in millions): March 31, 2018 Level 1 Level 2 Level 3 Total Assets: U.S. Treasuries $ 1.3 $ — $ — $ 1.3 Corporate bonds/Fixed income 60.4 22.7 — 83.1 Corporate equity securities 10.5 — — 10.5 Liabilities: Contingent consideration — — 7.4 7.4 December 31, 2017 Level 1 Level 2 Level 3 Total Assets: U.S. Treasuries $ 1.8 $ — $ — $ 1.8 Corporate bonds/Fixed income 10.4 30.8 — 41.2 Corporate equity securities 12.4 — — 12.4 Liabilities: Contingent consideration — — 8.0 8.0 The following table summarizes the change in financial instruments classified as Level 3 in the fair value hierarchy as of March 31, 2018 (in millions): Balance at December 31, 2017 $ 8.0 Decrease due to current period payments (1.0 ) Increase due to current period acquisitions 0.4 Balance at March 31, 2018 $ 7.4 Insurance Collateral Insurance collateral is comprised of investments in U.S. Treasuries and marketable equity and debt securities held by the Company’s wholly owned captive insurance subsidiaries that support the Company’s insurance programs and reserves, as well as cash deposits with third parties. Certain of these investments, if sold or otherwise liquidated, would have to be replaced by other suitable financial assurances and are, therefore, considered restricted. U.S. Treasuries and debt securities are designated as available-for-sale and reported at fair value with the related temporary unrealized gains and losses reported as a separate component of accumulated other comprehensive income (loss), net of deferred income tax. Declines in the fair value of an available-for-sale security which are determined to be other-than-temporary are recognized in the statements of operations, thus establishing a new cost basis for such investment. Investment income earned on these investments is reported as a component of other income (expense), net in the accompanying statements of operations. Effective January 1, 2018, the Company adopted ASU No. 2016-01 and corporate equity securities are no longer classified as available-for-sale. The change in fair value of corporate equity securities are reported in other income (expense), net in the accompanying consolidated statements of operations. As of March 31, 2018 , the change in fair value in other income (expense), net was $0.9 million . Investments are generally classified within Level 1 or Level 2 of the fair value hierarchy because they are valued using quoted market prices, broker or dealer quotations, or alternative pricing sources with reasonable levels of price transparency. Insurance collateral consisted of the following as of March 31, 2018 and December 31, 2017 (in millions): March 31, 2018 December 31, 2017 Available-for-sale securities: U.S. Treasuries $ 1.3 $ 1.8 Corporate bonds/Fixed income 83.1 41.2 Corporate equity securities — 12.4 Total available-for-sale securities 84.4 55.4 Corporate equity securities 10.5 — Restricted cash deposits and other 18.6 30.8 Insurance collateral $ 113.5 $ 86.2 Amortized cost basis and aggregate fair value of the Company's available-for-sale and corporate equity securities as of March 31, 2018 and December 31, 2017 were as follows (in millions): March 31, 2018 Gross Gross Cost Unrealized Unrealized Fair Basis Gains Losses Value Description: U.S. Treasuries $ 1.3 $ — $ — $ 1.3 Corporate bonds/Fixed income 83.4 0.2 (0.5 ) 83.1 Total available-for-sale securities 84.7 0.2 (0.5 ) 84.4 Corporate equity securities 9.1 1.4 — 10.5 Total corporate equity and available-for-sale securities $ 93.8 $ 1.6 $ (0.5 ) $ 94.9 December 31, 2017 Gross Gross Cost Unrealized Unrealized Fair Basis Gains Losses Value Description: U.S. Treasuries $ 1.8 $ — $ — $ 1.8 Corporate bonds/Fixed income 40.7 0.7 (0.2 ) 41.2 Corporate equity securities 10.5 1.9 — 12.4 Total available-for-sale securities $ 53.0 $ 2.6 $ (0.2 ) $ 55.4 As of March 31, 2018 , available-for-sale securities included U.S. Treasuries, corporate bonds and fixed income securities of $6.1 million with contractual maturities within one year and $49.9 million with contractual maturities extending longer than one year through five years and $28.4 million with contractual maturities extending longer than five years. Actual maturities may differ from contractual maturities as a result of the Company's ability to sell these securities prior to maturity. The Company's available-for-sale investment securities that were temporarily impaired as of March 31, 2018 and December 31, 2017 were as follows (in millions): March 31, 2018 December 31, 2017 Fair Unrealized Fair Unrealized Value Loss Value Loss Description: Corporate bonds/Fixed income $ 43.2 $ (0.5 ) $ 16.0 $ (0.2 ) There were no available-for-sale investment securities that were other-than-temporarily impaired as of March 31, 2018 . The Company evaluates the investment securities available-for-sale on a quarterly basis to determine whether declines in the fair value of these securities are other-than-temporary. The evaluation consists of reviewing the fair value of the security compared to the carrying amount, the historical volatility of the price of each security, and any industry and company specific factors related to each security. The Company is not aware of any specific factors indicating that the underlying issuers of the corporate bonds/fixed income securities would not be able to pay interest as it becomes due or repay the principal amount at maturity. Therefore, the Company believes that the changes in the estimated fair values of these debt securities are related to temporary market fluctuations and the Company does not intend to dispose of these investments. The Company received proceeds of $15.2 million on the sale and maturities of available-for-sale securities during the three months ended March 31, 2018 . For the three months ended March 31, 2018 , a loss of approximately $0.2 million was reclassified from accumulated other comprehensive income (loss) to other income (expense), net in the accompanying consolidated statements of operations. There were $0.9 million of unrealized gains for the three months ended March 31, 2018 recorded in accumulated other comprehensive income (loss) for available-for-sale securities.

Prepaid and Other Current Asset

Prepaid and Other Current Assets	3 Months Ended
	Mar. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid and Other Current Assets	Prepaid and Other Current Assets The following table presents a summary of items comprising prepaid and other current assets in the accompanying consolidated balance sheets as of March 31, 2018 and December 31, 2017 (in millions): March 31, December 31, 2018 2017 Income taxes receivable (1) $ — $ 74.3 Prepaid expenses 64.7 59.9 Other 33.5 31.4 Total prepaid and other current assets $ 98.2 $ 165.6 (1) At March 31, 2018 , the Company's income taxes receivable were reclassified against its income taxes payable as the Company expects to utilize such receivables to offset amounts due as a result of the sale of the medical transportation business. See Notes 5 and 10 .

Investments in Unconsolidated A

Investments in Unconsolidated Affiliates	3 Months Ended
	Mar. 31, 2018
Equity Method Investments and Joint Ventures [Abstract]
Investments in Unconsolidated Affiliates	Investments in Unconsolidated Affiliates Investments in unconsolidated affiliates in which the Company exerts significant influence but does not control or otherwise consolidate are accounted for using the equity method. Equity method investments are initially recorded at cost, unless such investments are a result of the Company entering into a transaction whereby the Company loses control of a previously controlled entity but retains a noncontrolling interest. Such transactions, which result in the deconsolidation of a previously consolidated entity, are measured at fair value. The fair value measurement utilizes Level 3 inputs, which include unobservable data, to measure the fair value of the retained noncontrolling interest. The fair value determination is generally based on a combination of multiple valuation methods, which can include discounted cash flow, income approach, or market value approach, which incorporates estimates of future earnings and market valuation multiples for certain guideline companies. These investments are included as investments in unconsolidated affiliates in the accompanying consolidated balance sheets. The Company’s share of the profits and losses from these investments is reported in equity in earnings of unconsolidated affiliates in the accompanying consolidated statements of operations. The Company monitors its investments for other-than-temporary impairment by considering factors such as current economic and market conditions and the operating performance of the companies and records reductions in carrying values when necessary. As of March 31, 2018 and December 31, 2017 , the Company recorded in the accompanying consolidated balance sheets its investments in unconsolidated affiliates of $157.4 million and $156.7 million , respectively. The Company's net earnings from these investments during the three months ended March 31, 2018 and 2017 were approximately $5.8 million and $4.9 million , respectively. During the three months ended March 31, 2018 , the Company entered into one equity method investment. As a result of this investment, the Company contributed its controlling interest in one center in exchange for a noncontrolling interest in the new investment and net cash consideration of $0.2 million . This investment is jointly owned by a health system and the Company. The newly formed investment (including the contributed center) is controlled by the health system. In each transaction, the gain or loss on deconsolidation, which is primarily non-cash in nature, is determined based on the difference between the fair value of the Company’s interest, which is based on estimates of the expected future earnings, in the new entity and the carrying value of both the tangible and intangible assets of the contributed center immediately prior to the transaction. In certain cases, the Company evaluated likely scenarios which are weighted by a range of expected probabilities of 10% to 50% which are primarily based on third-party valuations received by the Company. Accordingly, the Company recognized a net gain on deconsolidation which is included in net gain (loss) on disposals and deconsolidations in the accompanying consolidated statements of operations of approximately $0.7 million during the three months ended March 31, 2018 . During the three months ended March 31, 2017 , the Company recognized a net gain on deconsolidation in the accompanying consolidated statements of operations of approximately $7.4 million .

Goodwill and Intangible Assets

Goodwill and Intangible Assets	3 Months Ended
	Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	Goodwill and Intangible Assets The Company’s intangible assets include goodwill and other intangibles, which include the fair value of both the customer relationships with hospitals and certain trade names. The Company's indefinite-lived intangibles include goodwill, trade names and licenses. Goodwill represents the excess of purchase price over the fair value of net assets acquired. The Company evaluates indefinite-lived intangible assets, including goodwill, for impairment at least on an annual basis and more frequently if certain indicators are encountered. Indefinite-lived intangibles are to be tested at the reporting unit level, defined as an operating segment or one level below an operating segment (referred to as a component), with the fair value of the reporting unit being compared to its carrying amount. If the fair value of a reporting unit exceeds its carrying amount, the indefinite-lived intangibles associated with the reporting unit are not considered to be impaired. The Company will perform its annual goodwill impairment test during the fourth quarter of 2018 or sooner if events or circumstances occur that are more likely than not to reduce the fair value of the reporting units below their carrying value. There can be no assurance that the estimates and assumptions made for purposes of this qualitative evaluation will prove to be an accurate prediction of future results. Factors that could impact the final determination of fair value in connection with the completion of the annual goodwill impairment process include a sustained decline in market capitalization, changes in the estimated fair values of the physician services assets and liabilities, changes in projected future earnings and net cash flows, changes in market related multiples, and changes in valuation related assumptions such as discount rates and perpetual growth rates. Goodwill The changes in the carrying amount of goodwill for the three months ended March 31, 2018 are as follows (in millions): Physician Services Ambulatory Services Total Balance at December 31, 2017 $ 5,410.6 $ 2,125.5 $ 7,536.1 Goodwill acquired, including post acquisition adjustments 38.7 (0.3 ) 38.4 Goodwill disposed, including impact of deconsolidation transactions — (3.8 ) (3.8 ) Balance at March 31, 2018 $ 5,449.3 $ 2,121.4 $ 7,570.7 During the three months ended March 31, 2018 , goodwill was recorded in the Company's physician services segment due to the acquisition of two physician practices. In the Company's ambulatory services segment, goodwill decreased by $0.3 million as a result of adjustments to goodwill related to prior year acquisitions and by $3.8 million as a result of the disposal or deconsolidation of consolidated surgery centers within the ambulatory services segment. Intangible Assets Amortizable Intangible Assets Estimated Useful Life Weighted Average Amortization Period Customer relationships 17 to 20 years 17.9 Capitalized software 3 to 7 years 5.4 Agreements, contracts and other 3 to 10 years 3.0 Intangible assets at March 31, 2018 and December 31, 2017 consisted of the following (in millions): March 31, 2018 December 31, 2017 Gross Gross Carrying Accumulated Carrying Accumulated Amount Amortization Net Amount Amortization Net Amortizable intangible assets: Customer relationships $ 3,480.1 $ (365.1 ) $ 3,115.0 $ 3,446.7 $ (321.8 ) $ 3,124.9 Capitalized software 179.6 (83.6 ) 96.0 166.9 (73.3 ) 93.6 Agreements, contracts and other 13.9 (5.6 ) 8.3 13.5 (4.9 ) 8.6 Total amortizable intangible assets 3,673.6 (454.3 ) 3,219.3 3,627.1 (400.0 ) 3,227.1 Non-amortizable intangible assets: Trade names 430.0 — 430.0 430.0 — 430.0 Restrictive covenant arrangements 8.4 — 8.4 8.4 — 8.4 Total non-amortizable intangible assets 438.4 — 438.4 438.4 — 438.4 Total intangible assets $ 4,112.0 $ (454.3 ) $ 3,657.7 $ 4,065.5 $ (400.0 ) $ 3,665.5 Amortization of intangible assets for the three months ended March 31, 2018 and 2017 was $54.7 million and $56.1 million , respectively. Estimated amortization of intangible assets for the remainder of 2018 and each of the following five years and thereafter is $162.0 million , $206.4 million , $195.8 million , $187.9 million , $179.4 million , $175.5 million and $2.11 billion , respectively. The Company expects to recognize amortization of all intangible assets over a weighted average period of 17.5 years with no expected residual values.

Other Accrued Liabilities

Other Accrued Liabilities	3 Months Ended
	Mar. 31, 2018
Accrued Liabilities, Current [Abstract]
Other Accrued Liabilities	Other Accrued Liabilities The following table presents a summary of items comprising other accrued liabilities in the accompanying consolidated balance sheets as of March 31, 2018 and December 31, 2017 (in millions): March 31, December 31, 2018 2017 Insurance reserves $ 80.0 $ 77.1 Refunds payable 26.3 28.9 Deferred revenue 16.5 18.9 Income taxes payable (1) 241.8 — Other 184.5 156.7 Total other accrued liabilities $ 549.1 $ 281.6 (1) Amount includes the income tax payable following the sale of the medical transportation business that will be paid in the second quarter of 2018 .

Long-term Debt

Long-term Debt	3 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Long-term Debt	Long-term Debt Long-term debt at March 31, 2018 and December 31, 2017 consisted of the following (in millions): March 31, December 31, 2018 2017 ABL Facility $ — $ — Term Loan B - 2023 2,256.3 3,956.3 Senior Unsecured Notes due 2022 (5.625%) 1,100.0 1,100.0 Senior Unsecured Notes due 2022 (5.125%) 750.0 750.0 Senior Unsecured Notes due 2024 (6.250%) 550.0 550.0 Other debt due through 2025 26.6 24.1 Capitalized lease arrangements due through 2031 31.3 32.3 4,714.2 6,412.7 Less current portion 12.7 52.1 Less net deferred financing costs 93.0 97.3 Long-term debt $ 4,608.5 $ 6,263.3 The fair value of the Company's fixed rate long-term debt, with a carrying value of $2.46 billion , was $2.47 billion at March 31, 2018 . The Company's variable rate long-term debt approximated its carrying value of $2.26 billion at March 31, 2018 . With the exception of the Company’s senior unsecured notes, the fair value of fixed rate debt (Level 2) is determined based on an estimation of discounted future cash flows of the debt at rates currently quoted or offered to the Company for similar debt instruments of comparable maturities by its lenders. The fair value of the Company’s senior unsecured notes (Level 1 and 2) is determined based on quoted prices in an active market. Subsequent to the divestiture of the medical transportation business in March 2018, the Company utilized approximately $1.82 billion of the proceeds to repay indebtedness under the term loan facility and ABL facility. As a result of the payment on the term loan, the Company is no longer required to make mandatory principal payments through the remaining term. Previously, the Company was required to make principal payments of $40.0 million per year.

Insurance Reserves

Insurance Reserves	3 Months Ended
	Mar. 31, 2018
Payables and Accruals [Abstract]
Insurance Reserves	Insurance Reserves Insurance reserves are established for professional and general liability claims utilizing policies with both fully-insured and self-insured components. This includes the use of an off-shore captive insurance program through wholly owned subsidiaries for certain professional (medical malpractice) and general liability programs. In those instances where the Company has obtained third-party insurance coverage, the Company normally retains liability for the first $1 million to $3 million of the loss. Insurance reserves cover known claims and incidents within the level of Company retention that may result in the assertion of additional claims, as well as claims from unknown incidents that may be asserted arising from activities through March 31, 2018 . The Company establishes reserves for claims based upon an assessment of claims reported and claims incurred but not reported. The reserves are established based on consultation with third-party independent actuaries using actuarial principles and assumptions that consider a number of factors, including historical claim payment patterns (including legal costs) and changes in case reserves and the assumed rate of inflation in health care costs and property damage repairs. Claim reserves are not discounted. Provisions for insurance expense included in the statements of operations include provisions determined in consultation with third-party actuaries and premiums paid to third-party insurers. At March 31, 2018 and December 31, 2017 , the Company's accrued insurance reserves are presented in the accompanying consolidated balance sheets as a component of other accrued liabilities and insurance reserves as follows (in millions): March 31, 2018 December 31, 2017 Third-party insurance reserves $ 110.4 $ 111.3 Estimated losses under self-insured programs 148.1 170.3 Incurred but not reported losses 145.0 114.0 Total accrued insurance reserves 403.5 395.6 Less estimated losses payable within one year 80.0 77.1 Total $ 323.5 $ 318.5 The changes to the Company's estimated losses under insurance programs as of March 31, 2018 were as follows (in millions): Balance at December 31, 2017 $ 395.6 Assumed liabilities through acquisitions 0.5 Provision related to current period self-insurance reserves (1) 20.4 Benefit related to changes in prior period self-insurance reserves 9.0 Payments for prior period self-insurance reserves (20.2 ) Change in third-party insurance self-insurance reserves 1.7 Other, net including post-acquisition adjustments (3.5 ) Balance at March 31, 2018 $ 403.5 (1) Total insurance expense for the period ended March 31, 2018 and 2017 were $47.6 million and $37.6 million , respectively, which also included premiums paid to third-party insurers and premiums paid to captive insurance companies of certain of our joint venture partners.

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Stockholders' Equity	Stockholders’ Equity Stock Incentive Plans Transactions in which the Company receives employee and non-employee services in exchange for the Company’s equity instruments or liabilities that are based on the fair value of the Company’s equity securities or may be settled by the issuance of these securities are accounted using a fair value method. The Company applies the Black-Scholes method of valuation in determining share-based compensation expense for option awards. For performance share units, the Company utilizes the Monte-Carlo method of valuation. For awards with graded vesting schedules, the Company recognizes compensation expense using the accelerated method. Forfeitures are recognized as incurred. Under Company policy, shares held by outside directors and senior management are subject to certain stock ownership guidelines and restrictions on hedging and pledging. In May 2014, the Company adopted the AmSurg Corp. 2014 Equity and Incentive Plan (the “2014 Plan”), which was amended in both 2016 and 2017, most recently to change the name of the plan to the Envision Healthcare Corporation 2014 Equity and Incentive Plan. Under this plan, the Company has granted restricted stock, non-qualified options and market-based performance share units to employees and outside directors. At March 31, 2018 , 3,200,000 shares were authorized for grant under the 2014 Plan and 977,999 shares were available for future equity grants. Under the terms of the 2014 Plan, all equity awards granted thereunder are subject to a one year minimum vesting period. The Company withholds a portion of employee restricted stock that vests to cover payroll withholding taxes in accordance with the restricted stock agreements. During the three months ended March 31, 2018 and 2017 , the Company withheld approximately 94,084 shares and 128,186 shares, respectively, of common stock for approximately $3.3 million and $8.8 million , respectively. On December 1, 2016, each outstanding option to purchase shares of Envision Healthcare Holdings, Inc. (EHH) common stock and each outstanding EHH stock unit (including stock units subject to time-based and performance-based vesting conditions) were converted into an option to purchase 0.334 shares of common stock of the Company and 0.334 stock units of the Company, respectively. Each option and stock unit continues to have the same terms and conditions as were in effect under the EHH 2013 Omnibus Incentive Plan prior to the completion of the merger. During the year ended December 31, 2017, the plan was renamed to the Envision Healthcare Corporation 2013 Omnibus Incentive Plan (the "2013 Plan"). At March 31, 2018 , 5,580,568 shares were authorized for grant under the 2013 Plan and 3,720,175 shares were available for future equity grants. Non-performance and performance-based awards issued under the 2013 Plan are subject to time-based vesting ranging from one to three years. All options issued under the 2013 Plan have a term of ten years from the date of grant. Under the terms of the 2013 Plan, all equity awards granted thereunder are subject to a one year minimum vesting period. Restricted stock granted to outside directors vests on the first anniversary of the date of grant. Restricted stock granted to employees generally vests over three to four years in three equal installments. The fair value of restricted stock is determined based on the closing bid price of the Company’s common stock on the grant date. Performance Units During the three months ended March 31, 2018 , the Company issued 70,615 market-based performance share units with a grant date fair value of approximately $40 per unit. Also, during the three months ended March 31, 2018 , 26,249 market-based performance share units vested while 48,898 market-based performance shares were canceled. At March 31, 2018 , 191,223 market-based performance shares were outstanding. The market-based performance share units vest based on achievement of both the three years service condition and market condition. The market-based performance share units continue to have the same terms and conditions as were in effect prior to the Merger. The Monte Carlo simulation used to calculate the fair value of the market-based performance share units simulates the present value of the potential outcomes of future stock prices of the Company and the companies included in the defined performance index over the performance cycle. The projection of stock prices are based on the risk-free rate of return, the volatilities of the stock price of the Company and the companies included in the defined performance index, and the correlation of the stock price of the Company with these companies. If the financial performance goal is not achieved, the market based performance share units will be forfeited. The number of market based performance share units that will ultimately be received by the holders range from 0% to 150% of the units granted, depending on the Company’s level of achievement with respect to the financial performance goal. During the three months ended March 31, 2018 , the Company issued 453,938 performance-based share units which vest in a range from 0% to 150% of the number of target units awarded, depending on the Company’s level of achievement with respect to the financial performance goal, after three years . The Company has not recognized stock compensation expense for the performance-based share units during the three months ended March 31, 2018 as the performance conditions have not been determined as of March 31, 2018 . The Company expects the performance conditions to be determined during the third year of vesting. During the three months ended March 31, 2018 , 18,749 performance-based shares vested while 66,565 performance-based shares were canceled. At March 31, 2018 , 678,775 performance-based share units were outstanding. Restricted Stock A summary of the status of and changes for non-vested restricted shares for the periods presented below is summarized as follows: Weighted Number Average of Shares Grant Price Non-vested awards at December 31, 2017 1,410,461 $ 65.52 Shares granted 682,119 40.01 Shares vested (512,103 ) 63.43 Shares forfeited (104,924 ) 63.87 Non-vested awards at March 31, 2018 1,475,553 54.57 Stock Options A summary of stock option activity for the periods presented below is summarized as follows: Weighted Weighted Average Average Remaining Number Exercise Contractual of Shares Price Term (in years) Outstanding at December 31, 2017 2,826,021 $ 19.70 4.3 Options exercised with total intrinsic value of $1.0 million (38,611 ) 11.13 Options canceled (46,952 ) 66.88 Outstanding at March 31, 2018 with an aggregate intrinsic value of $64.7 million 2,740,458 19.01 2.8 Vested and Exercisable at March 31, 2018 with an aggregate intrinsic value of $64.7 million 2,666,440 17.70 2.7 The aggregate intrinsic value represents the total pre-tax intrinsic value received by the option holders on the exercise date or that would have been received by the option holders had all holders of in-the-money outstanding options at March 31, 2018 exercised their options at the Company’s closing stock price on March 31, 2018 . Other Information Other information pertaining to share-based activity during the three months ended March 31, 2018 and 2017 was as follows (in millions): Three Months Ended March 31, 2018 2017 Share-based compensation expense from continuing operations $ 7.4 $ 14.6 Fair value of shares vested 18.7 28.4 Cash received from option exercises 0.3 1.1 Tax expense (benefit) from exercises of share based awards 4.6 (2.9 ) As of March 31, 2018 , the Company had total unrecognized compensation cost of approximately $49.8 million related to non-vested awards, which the Company expects to recognize through 2021 and over a weighted average period of 1.0 year. For the three months ended March 31, 2018 and 2017 , there were 370,416 and 66,463 options that were anti-dilutive, respectively. On September 17, 2017, the Board authorized a stock repurchase program that authorizes the Company to repurchase up to $250 million of its common stock. As of March 31, 2018 , the Company had made no repurchases under the stock repurchase program. Earnings per Share Basic net earnings (loss) attributable to Envision Healthcare Corporation common stockholders, per common share, excludes dilution and is computed by dividing net earnings (loss) attributable to Envision Healthcare Corporation common stockholders by the weighted-average number of common shares outstanding during the period. Diluted net earnings (loss) attributable to Envision Healthcare Corporation common stockholders, per common share is computed by dividing net earnings (loss) attributable to Envision Healthcare Corporation common stockholders by the weighted-average number of common shares outstanding during the period plus any potential dilutive common share equivalents, including shares issuable (i) upon the vesting of restricted stock awards, restricted stock units and performance stock units as determined under the treasury stock method and (ii) prior to July 3, 2017, the mandatory conversion date, upon conversion of the Company preferred stock as determined under the if-converted method. For purposes of calculating diluted earnings (loss) per share, preferred stock dividends have been subtracted from both net earnings (loss) from continuing operations attributable to Envision Healthcare Corporation and net earnings (loss) attributable to Envision Healthcare Corporation common stockholders in periods in which utilizing the if-converted method would be anti-dilutive. The following is a reconciliation of the numerator and denominators of basic and diluted earnings (loss) per share (dollars in millions; per share amounts in thousands): Three Months Ended March 31, Earnings Shares Per Share (Numerator) (Denominator) Amount 2018: Net earnings from continuing operations attributable to Envision Healthcare Corporation common stockholders (basic) $ 36.9 120,552 $ 0.31 Effect of dilutive securities, options and non-vested shares — 1,802 Net earnings from continuing operations attributable to Envision Healthcare Corporation common stockholders (diluted) $ 36.9 122,354 $ 0.30 2017: Net earnings from continuing operations attributable to Envision Healthcare Corporation common stockholders (basic) $ 30.7 116,563 $ 0.26 Effect of dilutive securities, options and non-vested shares — 2,912 Net earnings attributable to Envision Healthcare Corporation common stockholders (diluted) $ 30.7 119,475 $ 0.26

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. The Company applies recognition thresholds and measurement attributes for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return as it relates to accounting for uncertainty in income taxes. In addition, it is the Company’s policy to recognize interest accrued and penalties, if any, related to unrecognized benefits as income tax expense in its consolidated statements of operations. The Company does not expect significant changes to its tax positions or liability for tax uncertainties during the next 12 months. The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction and various state jurisdictions. The Company is no longer subject to U.S. federal income tax examinations for the years prior to 2014 . With few exceptions, the Company is no longer subject to U.S. state income tax examinations for the years prior to 2013 . On December 22, 2017, the Tax Cuts and Jobs Act of 2017 (the Act) was signed into law. The Act includes a number of changes to existing U.S. tax laws that impact the Company, most notably a reduction of the U.S. corporate tax rate from 35% to 21%, for tax years beginning after December 31, 2017. As a result of the enacted rate change, during the year ended December 31, 2017 we recorded a benefit of $596.6 million in deferred income tax expense for the change in the net deferred tax liability at the 21% tax rate. The Act also provides for acceleration of depreciation for certain assets placed into service after September 27, 2017, as well as prospective changes that began in 2018. These prospective changes include an increased limitation on deductibility of executive compensation, a limitation on the deductibility of interest expense, new rules surrounding meals and entertainment expense and fines and penalties. Also, while net operating losses generated in the future may be carried forward indefinitely under the new law, there is a limitation on the amount that may be used in any given year. The Act may also have an impact on projected future taxable income that could affect valuation allowance considerations. In addition to the Federal law, the Company awaits guidance from the states in which it files on how components of the Act may be treated in these jurisdictions. We currently expect our adjusted effective rate during 2018 to be approximately 26% . During the three months ended March 31, 2018 , we recorded an additional $10.3 million as additional income tax benefit as a result of the Act, primarily due to 2017 acquisitions with subsequent purchase price allocation adjustments. The tax benefit represents the Company's assessment of the impact of the Act, the key component being re-measurement of deferred tax balances to the new corporate rate. As the benefit is based on currently available information and interpretations, which are continuing to evolve, the benefit should be considered provisional. The Company will continue to analyze additional information and guidance related to the Act as supplemental legislation, regulatory guidance, or evolving technical interpretations become available. The final impacts may differ from the recorded amounts as of March 31, 2018 , and the Company will continue to refine such amounts within the measurement period provided by SAB 118 and ASU 2018-05. We continue to analyze the different aspects of the Act which could potentially affect the provisional estimates that were recorded at December 31, 2017 and March 31, 2018 . Any subsequent adjustment to these amounts will be recorded to current tax expense in the first reporting period in which a reasonable estimate can be determined. The Company expects to complete the analysis no later than the fourth quarter of 2018 .

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Litigation The Company is subject to litigation arising in the ordinary course of business, including litigation principally relating to professional liability, auto accident and workers’ compensation claims. There can be no assurance that the Company's insurance coverage and self-insured liabilities will be adequate to cover all liabilities occurring out of such claims. From time to time, in the ordinary course of business and like others in the Company's sector, the Company receives requests for information from government agencies in connection with their regulatory or investigational authority. Such requests can include subpoenas or demand letters for documents to assist the government in audits or investigations. The Company reviews such requests and notices and takes appropriate action. The Company has been subject to certain requests for information and investigations in the past and could be subject to such requests for information and investigations in the future. In the opinion of the Company, it is not engaged in any legal proceedings that the Company expects will have a material adverse effect on the Company's business, financial condition, cash flows or results of operations, other than as set forth below. On August 4, 2017, a shareholder filed a purported class action in the United States District Court for the Middle District of Tennessee (M.D. Tenn.) against the Company and several of its officers and former officers alleging that the Company and the individual defendants violated the federal securities laws by making allegedly false and misleading statements and failing to disclose certain information. On September 29, 2017, and October 23, 2017, respectively, two purported class actions were filed in the same court making similar allegations. The Court subsequently consolidated these cases into a single action. On November 20, 2017, a shareholder filed a purported class action in the M.D. Tenn. against the Company and its Board. The plaintiff generally alleges that the Company and/or certain of its officers breached various fiduciary duties and violated the federal securities laws. On December 12, 2017, and December 15, 2017, respectively, two purported class actions were filed in the same court raising essentially the same allegations. The Company believes these claims are without merit and intends to vigorously defend these actions. Given the preliminary stage of these matters, the Company is unable to estimate the amount of potential damages, if any, in any of these actions. The Company filed a lawsuit against United HealthCare Insurance Company (“United”) on March 12, 2018 in U.S. District Court for the Southern District of Florida asserting, among other things, that United breached its medical group participation agreement with the Company (the “Participation Agreement”) by unilaterally lowering the contracted rates payable for certain healthcare services provided by the Company's clinicians to United’s health plan participants. On April 13, 2018, United filed a claim against the Company in arbitration, alleging that we breached the Participation Agreement by improperly affiliating new entities. On April 27, 2018, the court ordered that the Company should pursue our claims in arbitration and we refiled our complaint in arbitration. While the Company intends to vigorously assert its claims against United in binding arbitration, the Company is unable to estimate the amount of any potential award or damages, if any. Insurance Programs Given the nature of the services provided, the Company and its subsidiaries are subject to professional and general liability claims and related lawsuits in the ordinary course of business. The Company maintains professional insurance with third-party insurers generally on a claims-made basis, subject to self-insured retentions, exclusions and other restrictions. A substantial portion of the professional liability loss risks are being provided by a third-party insurer which is fully reinsured by the Company's wholly owned captive insurance subsidiary. The assets, liabilities and results of operations of the wholly owned captive are consolidated in the accompanying consolidated financial statements. The liabilities for self-insurance in the accompanying consolidated balance sheets include estimates of the ultimate costs related to both reported claims on an individual and aggregate basis and unreported claims. The Company also obtains professional liability insurance on a claims-made basis from third-party insurers for its surgery centers and certain of its owned practices and employed physicians. The Company’s reserves for professional liability claims within the self-insured retention are based upon periodic actuarial calculations. These actuarial estimates consider historical claims frequency and severity, loss development patterns and other actuarial assumptions and are not discounted to present value. The Company also maintains insurance for director and officer liability, workers’ compensation liability and property damage. Certain policies are subject to deductibles. In addition to the insurance coverage provided, the Company indemnifies its officers and directors for actions taken on behalf of the Company and its subsidiaries. Redeemable Noncontrolling Interests In the event of a change in current law that would prohibit the physicians’ current form of ownership in the partnerships within the ambulatory services segment, the Company would be obligated to purchase the physicians’ interests in a substantial amount of the Company’s partnerships. The purchase price to be paid in such event would be determined by a predefined formula, as specified in the partnership agreements. The Company believes the likelihood of a change in current law that would trigger such purchases was remote as of March 31, 2018 . As a result, the noncontrolling interests that are subject to this redemption feature are not included as part of the Company’s equity and are classified as noncontrolling interests – redeemable on the Company’s consolidated balance sheets. In addition, certain wholly owned subsidiaries in the Company's ambulatory surgery segment are responsible for all debts incurred but unpaid by the Company's less than wholly owned partnerships as these subsidiaries are the general partner. As manager of the operations of these partnerships, the Company has the ability to limit potential liabilities by curtailing operations or taking other operating actions.

Segment Reporting

Segment Reporting	3 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting The Company has aligned financial results into two operating and reportable segments: physician services and ambulatory services. The physician services segment includes the Company’s hospital-based and non-hospital-based physician services business. The ambulatory services segment includes the Company’s ambulatory surgery business, which acquires, develops, owns and operates ASCs and surgical hospitals in partnership with physicians and health systems. The Company’s financial information by segment is prepared on an internal management reporting basis and includes allocations of corporate expenses. This financial information is used by the chief operating decision maker to allocate resources and assess the performance of the segments. The Company’s segments have been defined based on the separate financial information that is regularly produced and reviewed by the Company’s chief operating decision maker, which is its Chief Executive Officer. The following table presents financial information for each reportable segment (in millions): Three Months Ended March 31, 2018 2017 Net Revenue: Physician Services $ 1,769.4 $ 1,562.7 Ambulatory Services 307.6 315.9 Total $ 2,077.0 $ 1,878.6 Adjusted EBITDA: Physician Services $ 150.1 $ 150.1 Ambulatory Services 57.5 60.2 Total $ 207.6 $ 210.3 Adjusted EBITDA: $ 207.6 $ 210.3 Net earnings attributable to noncontrolling interests 51.2 54.1 Interest expense, net (63.6 ) (52.4 ) Depreciation and amortization (70.6 ) (71.3 ) Share-based compensation (7.4 ) (14.6 ) Transaction and integration costs (21.4 ) (21.5 ) Impairment charges (0.7 ) (0.3 ) Net gain (loss) on disposals and deconsolidations, net of noncontrolling interests (0.6 ) 0.3 Net unrealized loss on equity securities (0.9 ) — Earnings before income taxes $ 93.6 $ 104.6 Acquisition and Capital Expenditures: Physician Services $ 85.2 $ 66.0 Ambulatory Services 7.4 27.8 Total $ 92.6 $ 93.8

Financial Information for the C

Financial Information for the Company and Its Subsidiaries	3 Months Ended
	Mar. 31, 2018
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Financial Information for the Company and Its Subsidiaries	Financial Information for the Company and Its Subsidiaries The 2022 Senior Unsecured Notes are senior unsecured obligations of the Company and are guaranteed by its existing and subsequently acquired or organized 100% owned domestic subsidiaries. The 2022 Senior Unsecured Notes are guaranteed on a full and unconditional and joint and several basis, with limited exceptions considered customary for such guarantees, including the release of the guarantee when a subsidiary's assets are sold. The following condensed consolidating financial statements present the Company (as parent issuer), the subsidiary guarantors, the subsidiary non-guarantors and consolidating adjustments. These condensed consolidating financial statements have been prepared and presented in accordance with Rule 3-10 of Regulation S-X “Financial Statements of Guarantors and Issuers of Guaranteed Securities Registered or Being Registered.” The operating and investing activities of the separate legal entities are fully interdependent and integrated. Accordingly, the results of the separate legal entities are not representative of what the operating results would be on a stand-alone basis. As a result of the refinancing related to the Merger, the guarantor structure of certain entities changed and these statements have been revised to reflect the current structure post-Merger. Condensed Consolidating Balance Sheet - March 31, 2018 (In millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Consolidated Assets Current assets: Cash and cash equivalents $ 502.3 $ 57.6 $ 207.5 $ — $ 767.4 Insurance collateral — — 113.5 — 113.5 Accounts receivable, net — 361.5 1,171.3 — 1,532.8 Supplies inventory — — 22.1 — 22.1 Prepaid and other current assets 19.6 5.4 73.3 (0.1 ) 98.2 Total current assets 521.9 424.5 1,587.7 (0.1 ) 2,534.0 Property and equipment, net 20.3 80.4 183.3 — 284.0 Investments in and advances to affiliates 8,545.0 929.7 — (9,317.3 ) 157.4 Intercompany receivable 2,991.1 — — (2,991.1 ) — Goodwill — 1,705.9 — 5,864.8 7,570.7 Intangible assets, net 29.4 1,123.6 2,504.7 — 3,657.7 Other assets 66.1 42.6 72.0 — 180.7 Total assets $ 12,173.8 $ 4,306.7 $ 4,347.7 $ (6,443.7 ) $ 14,384.5 Liabilities and Equity Current liabilities: Current portion of long-term debt $ — $ 0.1 $ 12.6 $ — $ 12.7 Accounts payable 15.5 11.4 23.5 — 50.4 Accrued salaries and benefits 8.6 73.4 389.0 — 471.0 Accrued interest 35.0 — 0.1 — 35.1 Other accrued liabilities 324.7 162.5 62.0 (0.1 ) 549.1 Total current liabilities 383.8 247.4 487.2 (0.1 ) 1,118.3 Long-term debt 4,563.3 0.2 45.0 — 4,608.5 Deferred income taxes 721.8 — 181.0 — 902.8 Insurance reserves 6.2 89.8 227.5 — 323.5 Other long-term liabilities 47.2 74.0 34.4 — 155.6 Intercompany payable — 2,553.9 437.2 (2,991.1 ) — Noncontrolling interests – redeemable — — 74.1 112.2 186.3 Equity: Total Envision Healthcare Corporation equity 6,451.5 1,341.4 2,760.6 (4,102.0 ) 6,451.5 Noncontrolling interests – non-redeemable — — 100.7 537.3 638.0 Total equity 6,451.5 1,341.4 2,861.3 (3,564.7 ) 7,089.5 Total liabilities and equity $ 12,173.8 $ 4,306.7 $ 4,347.7 $ (6,443.7 ) $ 14,384.5 Condensed Consolidating Balance Sheet - December 31, 2017 (In millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Consolidated Assets Current assets: Cash and cash equivalents $ 110.0 $ 10.2 $ 192.0 $ — $ 312.2 Insurance collateral — — 86.2 — 86.2 Accounts receivable, net — 275.1 1,130.7 — 1,405.8 Supplies inventory — — 22.7 — 22.7 Prepaid and other current assets 7.5 75.8 82.7 (0.4 ) 165.6 Current assets held for sale — 2,751.8 — — 2,751.8 Total current assets 117.5 3,112.9 1,514.3 (0.4 ) 4,744.3 Property and equipment, net 10.8 103.2 188.7 — 302.7 Investments in and advances to affiliates 10,713.9 1,971.9 — (12,529.1 ) 156.7 Intercompany receivable 2,924.9 227.7 — (3,152.6 ) — Goodwill — 1,543.3 — 5,992.8 7,536.1 Intangible assets, net 12.9 1,256.1 2,396.5 — 3,665.5 Other assets 50.0 43.6 73.7 — 167.3 Total assets $ 13,830.0 $ 8,258.7 $ 4,173.2 $ (9,689.3 ) $ 16,572.6 Liabilities and Equity Current liabilities: Current portion of long-term debt $ 40.0 $ 0.1 $ 12.0 $ — $ 52.1 Accounts payable 2.0 23.1 37.1 — 62.2 Accrued salaries and benefits 5.5 218.1 324.4 — 548.0 Accrued interest 52.1 — — — 52.1 Other accrued liabilities 3.1 162.5 116.4 (0.4 ) 281.6 Current liabilities held for sale — 399.1 — — 399.1 Total current liabilities 102.7 802.9 489.9 (0.4 ) 1,395.1 Long-term debt 6,218.7 0.3 44.3 — 6,263.3 Deferred income taxes 940.0 — 149.3 — 1,089.3 Insurance reserves 6.0 106.3 206.2 — 318.5 Other long-term liabilities 35.5 78.5 35.9 — 149.9 Intercompany payable — 2,673.6 479.0 (3,152.6 ) — Noncontrolling interests – redeemable — — 75.3 111.8 187.1 Equity: Total Envision Healthcare Corporation equity 6,527.1 4,597.1 2,544.4 (7,141.5 ) 6,527.1 Noncontrolling interests – non-redeemable — — 148.9 493.4 642.3 Total equity 6,527.1 4,597.1 2,693.3 (6,648.1 ) 7,169.4 Total liabilities and equity $ 13,830.0 $ 8,258.7 $ 4,173.2 $ (9,689.3 ) $ 16,572.6 Condensed Consolidating Statement of Operations - For the Three Months Ended March 31, 2018 (In millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Consolidated Net revenue $ 7.3 $ 590.3 $ 1,523.1 $ (43.7 ) $ 2,077.0 Operating expenses: Salaries and benefits 16.6 531.7 990.8 (0.2 ) 1,538.9 Supply cost — 5.2 49.2 — 54.4 Insurance expense — 11.7 73.9 (38.0 ) 47.6 Other operating expenses 7.6 5.3 183.4 (5.5 ) 190.8 Transaction and integration costs 3.3 18.0 0.1 — 21.4 Impairment charges — 0.7 — — 0.7 Depreciation and amortization 1.6 52.0 17.0 — 70.6 Total operating expenses 29.1 624.6 1,314.4 (43.7 ) 1,924.4 Net gain (loss) on disposals and deconsolidations — 0.2 (1.2 ) — (1.0 ) Equity in earnings of unconsolidated affiliates (54.6 ) 147.1 — (86.7 ) 5.8 Operating income (loss) (76.4 ) 113.0 207.5 (86.7 ) 157.4 Interest expense, net 7.1 40.8 15.7 — 63.6 Other income (expense), net (0.5 ) 0.3 — — (0.2 ) Earnings (loss) before income taxes (84.0 ) 72.5 191.8 (86.7 ) 93.6 Income tax expense (benefit) 2.4 3.8 (0.7 ) — 5.5 Net earnings (loss) from continuing operations (86.4 ) 68.7 192.5 (86.7 ) 88.1 Net loss from discontinued operations — (123.3 ) — — (123.3 ) Net earnings (loss) (86.4 ) (54.6 ) 192.5 (86.7 ) (35.2 ) Less net earnings attributable to noncontrolling interests — — 51.2 — 51.2 Net earnings (loss) attributable to Envision Healthcare Corporation common stockholders $ (86.4 ) $ (54.6 ) $ 141.3 $ (86.7 ) $ (86.4 ) Comprehensive income (loss) attributable to Envision Healthcare Corporation $ (86.4 ) $ (54.6 ) $ 142.2 $ (86.7 ) $ (85.5 ) Condensed Consolidating Statement of Operations - For the Three Months Ended March 31, 2017 (In millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Consolidated Net revenue $ 8.2 $ 440.1 $ 1,468.7 $ (38.4 ) $ 1,878.6 Operating expenses: Salaries and benefits 22.7 403.9 932.6 (0.2 ) 1,359.0 Supply cost — 1.2 52.9 — 54.1 Insurance expense 0.5 9.8 50.5 (23.2 ) 37.6 Other operating expenses 6.7 35.4 157.0 (15.0 ) 184.1 Transaction and integration costs 2.3 18.7 0.5 — 21.5 Impairment charges — 0.3 — — 0.3 Depreciation and amortization 1.5 54.3 15.5 — 71.3 Total operating expenses 33.7 523.6 1,209.0 (38.4 ) 1,727.9 Net gain (loss) on disposals and deconsolidations — 1.8 (1.5 ) — 0.3 Equity in earnings of unconsolidated affiliates (399.3 ) 163.7 — 240.5 4.9 Operating income (loss) (424.8 ) 82.0 258.2 240.5 155.9 Interest expense, net 9.0 33.0 10.4 — 52.4 Other income, net 1.0 — 0.1 1.1 Earnings (loss) before income taxes (432.8 ) 49.0 247.9 240.5 104.6 Income tax expense (benefit) 12.4 (29.9 ) 35.0 — 17.5 Net earnings (loss) from continuing operations (445.2 ) 78.9 212.9 240.5 87.1 Net loss from discontinued operations — (478.2 ) — — (478.2 ) Net earnings (loss) (445.2 ) (399.3 ) 212.9 240.5 (391.1 ) Less net earnings attributable to noncontrolling interests — — 54.1 — 54.1 Net earnings (loss) attributable to Envision Healthcare Corporation stockholders (445.2 ) (399.3 ) 158.8 240.5 (445.2 ) Preferred stock dividends (2.3 ) — — — (2.3 ) Net earnings (loss) attributable to Envision Healthcare Corporation common stockholders $ (447.5 ) $ (399.3 ) $ 158.8 $ 240.5 $ (447.5 ) Comprehensive income (loss) attributable to Envision Healthcare Corporation $ (445.2 ) $ (399.3 ) $ 159.7 $ 240.5 $ (444.3 ) Condensed Consolidating Statement of Cash Flows - For the Three Months Ended March 31, 2018 (In millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Consolidated Cash flows from operating activities: Net cash flows provided by (used in) operating activities $ 26.4 $ (96.2 ) $ 245.5 $ (138.4 ) $ 37.3 Cash flows from investing activities: Acquisitions and related expenses (66.1 ) (71.6 ) — 66.1 (71.6 ) Acquisition of property and equipment (0.5 ) (37.2 ) (7.6 ) — (45.3 ) Net proceeds from sale of medical transportation business 2,279.7 — — — 2,279.7 Purchases of marketable securities — — (57.3 ) — (57.3 ) Maturities of marketable securities — — 17.2 — 17.2 Other, net — 2.6 (1.5 ) — 1.1 Net cash flows provided by (used in) investing activities 2,213.1 (106.2 ) (49.2 ) 66.1 2,123.8 Cash flows from financing activities: Proceeds from long-term borrowings 120.0 0.3 5.2 — 125.5 Repayment on long-term borrowings (1,820.0 ) (0.8 ) (3.4 ) — (1,824.2 ) Distributions to owners, including noncontrolling interests — (69.2 ) (122.3 ) 138.4 (53.1 ) Capital contributions — 66.1 — (66.1 ) — Changes in intercompany balances with affiliates, net (143.7 ) 213.4 (69.7 ) — — Other, net (3.5 ) — (2.8 ) — (6.3 ) Net cash flows provided by (used in) financing activities (1,847.2 ) 209.8 (193.0 ) 72.3 (1,758.1 ) Net increase in cash, cash equivalents, restricted cash and restricted cash equivalents 392.3 7.4 3.3 — 403.0 Cash, cash equivalents, restricted cash and restricted cash equivalents, beginning of period 110.0 50.2 222.8 — 383.0 Cash, cash equivalents, restricted cash and restricted cash equivalents, end of period $ 502.3 $ 57.6 $ 226.1 $ — $ 786.0 Condensed Consolidating Statement of Cash Flows - For the Three Months Ended March 31, 2017 (In millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Consolidated Cash flows from operating activities: Net cash flows provided by operating activities $ 26.8 $ 123.2 $ 95.5 $ (147.4 ) $ 98.1 Cash flows from investing activities: Acquisitions and related expenses — (73.3 ) — 0.2 (73.1 ) Acquisition of property and equipment (0.2 ) (27.7 ) (12.8 ) — (40.7 ) Purchases of marketable securities — — (3.4 ) — (3.4 ) Maturities of marketable securities — — 0.5 — 0.5 Other, net — 11.7 5.6 — 17.3 Net cash flows used in investing activities (0.2 ) (89.3 ) (10.1 ) 0.2 (99.4 ) Cash flows from financing activities: Proceeds from long-term borrowings — — 3.7 — 3.7 Repayment on long-term borrowings (8.7 ) (0.3 ) (2.9 ) — (11.9 ) Distributions to owners, including noncontrolling interests — (77.3 ) (130.6 ) 147.4 (60.5 ) Changes in intercompany balances with affiliates, net 1.8 19.0 (20.8 ) — — Other, net (9.2 ) (2.3 ) 3.3 (0.2 ) (8.4 ) Net cash flows used in financing activities (16.1 ) (60.9 ) (147.3 ) 147.2 (77.1 ) Net increase (decrease) in cash, cash equivalents, and restricted cash 10.5 (27.0 ) (61.9 ) — (78.4 ) Cash, cash equivalents, restricted cash and restricted cash equivalents, beginning of period 41.6 59.7 259.1 — 360.4 Less cash, cash equivalents, restricted cash and restricted cash equivalents of held for sale assets, end of period — 17.7 — — 17.7 Cash, cash equivalents, restricted cash and restricted cash equivalents, end of period $ 52.1 $ 15.0 $ 197.2 $ — $ 264.3

Basis of Presentation (Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation These unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial reporting and in accordance with Rule 10-01 of Regulation S-X. In the opinion of management, the unaudited interim consolidated financial statements contained in this report reflect all normal recurring adjustments, which are necessary for a fair presentation of the financial position and the results of operations for the interim periods presented. The results of operations for any interim period are not necessarily indicative of results for the full year. The accompanying unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2017 .
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and cash equivalents are comprised principally of demand deposits at banks and other highly liquid short-term investments with maturities generally three months or less when purchased. Cash and cash equivalents are reflected in the financial statements at cost, which approximates fair value.
Restricted Cash and Marketable Securities	Restricted Cash and Marketable Securities As of March 31, 2018 and December 31, 2017 , the Company held restricted cash and cash equivalents of $18.6 million and $30.8 million , respectively, classified within insurance collateral in the accompanying consolidated balance sheets. The cash was restricted for the purpose of satisfying the obligations of the Company's wholly owned captive insurance companies.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Reclassifications	Reclassifications Certain prior year amounts in the accompanying consolidated financial statements and these notes have been reclassified to conform to the current period presentation
Recent Accounting Pronouncements	Recent Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2014-09 “Revenue from Contracts with Customers,” Accounting Standards Codification (ASC) as topic 606 (ASC 606), which eliminated the transaction and industry-specific revenue recognition guidance under current GAAP and replaced it with a principle-based approach using the following steps: identify the contract(s) with a customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract and recognize revenue when (or as) the entity satisfies a performance obligation. The Company adopted the new standard effective January 1, 2018 using the modified retrospective method. As a result of using this approach, the Company recognized the cumulative effect adjustment to increase retained earnings $0.5 million for initial application of the guidance at the date of initial adoption. The adoption of the standard did not have a material impact on the Company's consolidated financial position, results of operations or cash flows. In February 2016, the FASB issued ASU No. 2016-02, “Leases,” and subsequently ASU No. 2017-13, which amend existing accounting standards for lease accounting, including requiring lessees to recognize most leases on the balance sheet and making changes to lessor accounting. The standard is effective for annual periods beginning after December 15, 2018, with early adoption permitted. The new standard requires a modified retrospective application for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. The Company will adopt the new standard effective January 1, 2019. The Company expects that nearly all leases currently classified as operating leases will be classified as operating leases under the new standard with a right-of-use asset and a corresponding obligation recognized on the balance sheet at the adoption date. The Company has not yet determined the impact this ASU will have on the Company's consolidated financial position, results of operations or cash flows. In January 2016, the FASB issued ASU 2016-01, "Financial Instruments - Overall," as amended by ASU 2018-03, "Technical Corrections and Improvements to Financial Instruments (Subtopic 825-10) – Recognition and Measurement of Financial Assets and Financial Liabilities” in February 2018, which among other changes in accounting and disclosure requirements, replaces the cost method of accounting for non-marketable equity securities with a model for recognizing impairments and observable price changes, and also eliminates the available-for-sale classification for marketable equity securities. Under the new guidance, other than when the consolidation or equity method of accounting is utilized, changes in the fair value of equity securities are to be recognized in earnings. The Company adopted the provisions of ASU 2016-01 and ASU 2018-03 as of January 1, 2018 resulting in a cumulative effect adjustment to retained earnings related to the unrealized gain on corporate equity securities. The adjustment of $1.6 million was reclassified out of accumulated other comprehensive income (loss) and into retained earnings. Prior to adoption, the corporate equity securities related unrealized gains and losses were reported as a separate component of accumulated other comprehensive income (loss). Effective January 1, 2018 the change in fair value on corporate equity securities is reported as a component of other income (expense), net in the accompanying consolidated statements of operations. In January 2017, the FASB issued ASU 2017-01, “Business Combinations (Topic 805) - Clarifying the Definition of a Business,” which changes the definition of a business to assist entities with evaluating when a set of transferred assets and activities is a business. The guidance requires an entity to evaluate if substantially all of the fair value of gross assets acquired is concentrated in a single identifiable asset or a group of similar identifiable assets. The guidance is effective for annual periods beginning after December 15, 2017, and interim periods within those years. The Company adopted ASU 2017-01 as of January 1, 2018. This standard did not have an impact on our consolidated financial statements, results of operations or cash flows upon adoption. Effective January 1, 2018, the Company retrospectively adopted a change in accounting principle related to the adoption of ASU No. 2016–18, Statement of Cash Flows (Topic 230)—Restricted Cash—a consensus of the FASB Emerging Issues Task Force. This revised standard is an effort by the FASB to reduce diversification in practice by providing specific guidance on the presentation of restricted cash or restricted cash equivalents in the statement of cash flows. The updated guidance requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash and restricted cash equivalents. As such, amounts generally described as restricted cash and restricted cash equivalents should be included in the “beginning–of–period” and “end–of–period” total amounts shown on the statement of cash flows. Accordingly, upon adoption the Company used the retrospective transition method by restating its consolidated statements of cash flows to include restricted cash of $28.8 million in the beginning and $39.0 million in the ending cash, cash equivalents, and restricted cash balances for the three months ended March 31, 2017 . In February 2018, the FASB issued ASU No. 2018-02, "Income Statement – Reporting Comprehensive Income (Topic 220) - Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income," which will allow a reclassification from accumulated other comprehensive income (loss) to retained earnings for the tax effects resulting from the Tax Cuts and Jobs Act (the Act) that are stranded in accumulated other comprehensive income (loss). This standard also requires certain disclosures about stranded tax effects. ASU 2018-02, however, does not change the underlying guidance that requires that the effect of a change in tax laws or rates be included in income from continuing operations. The standard is effective for annual periods beginning after December 15, 2018, with early adoption permitted for interim periods within those years. The Company adopted ASU 2018-02 as of January 1, 2018. This standard did not have an impact on our consolidated financial statements, results of operations or cash flows upon adoption. In March 2018, the FASB issued ASU 2018-05, "Income Taxes (Topic 740) - Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 118 (SAB 118)." The standard amends ASC 740, Income Taxes to provide guidance on accounting for the tax effects of the Tax Cuts and Jobs Act of 2017 pursuant to SAB 118. The guidance allows a company to record a provisional amount when it does not have the necessary information available, prepared, or analyzed in reasonable detail to complete its accounting for the change in the tax law. The measurement period ends when the company has obtained, prepared and analyzed the information necessary to finalize its accounting, but cannot extend beyond one year. Additional information regarding the adoption of this standard is contained in Note 14 .
Revenue Recognition	Revenue Recognition On January 1, 2018 the Company adopted ASC 606. The presentation of the amount of earnings from operations and net earnings were unchanged upon adoption of the new standard; however, adoption of the new standard resulted in changes to the presentation of revenues and the provision for uncollectibles in the consolidated statements of operations. Previously, the estimate for unrealizable amounts was recorded to the provision for uncollectibles and presented as a separate deduction to arrive at net revenue. Upon adoption, the estimate for unrealizable amounts is now reflected as implicit price concession as a reduction to arrive at net revenue. The majority of our revenue is generated from fee for service patient revenue, which is derived principally through contracts originating from the provision of physician services during episodes of care to patients of healthcare facilities and from facility fees for procedures performed at surgery centers. These episodes of care and procedures qualify as distinct goods and services, provided simultaneously together with other readily available resources, in a single instance of service, and thereby constitute a single performance obligation for each patient encounter and, in most instances, occur at readily determinable transaction prices. As a practical expedient, the Company adopted a portfolio approach to sources of patient revenue, applied by specialty to each healthcare facility or surgery center. At this level, each portfolio shares the characteristics conducive to ensuring that the results do not materially differ from the new standard if it were to be applied to individual patient contracts related to each episode of care. Accordingly, there was not a change in the Company's method to recognize revenue. Additionally, through practical expedients, the Company did not adjust the transaction price for any financing components as those were deemed to be insignificant and expensed all incremental customer contract acquisition costs as incurred as such costs are not material and would be amortized over a period less than one year. Subsequent changes that are determined to be a result of an adverse change in the customer's ability to pay, are recorded as bad debt within other operating expenses. Due to the nature of ambulatory services segment, the Company has the ability to assess the ultimate collection for substantially all of the patient service revenue before services are provided as those services are pre-scheduled and non-emergent. Contract and other revenue primarily represents income earned from healthcare facilities and medical centers to supplement third-party and patient reimbursement and contract staffing assignments. The transaction price for these arrangements may be fixed or variable, with determination periods ranging from one month to 18 months. In these instances, the Company will estimate variable compensation at contract commencement and recognize revenue monthly on a straight-line basis, which correlates with the performance obligation to stand ready. Estimating net revenue is a complex process, largely due to the volume of transactions, the number and complexity of contracts with payors, the limited availability, at times, of certain patient and payor information at the time services are provided, and the length of time it takes for collections to fully mature. Patients are billed for services provided, and the Company receives payments for these services from patients or their third-party payors. Payments for services provided are generally less than billed charges. The Company recognizes fee for service revenue, net of contractual adjustments and discounts for uninsured patients, at the time services are provided by healthcare providers. In the period services are provided, the Company estimates gross charges based on billed services plus an estimate for unbilled services based on pending case data collected, estimates contractual allowances based on contracted rates and historical or actual cash collections (net of recoveries), when available, and estimates the discount for uninsured patients based on historical cash collections (net of recoveries) from uninsured patients. For third-party payors, the specific benefits provided for under each patients’ healthcare plan, mandated payment rates under the Medicare and Medicaid programs, as applicable, and historical cash collections are utilized. These expected collections are based on fees and negotiated payment rates in the case of third-party payors, the specific benefits provided for under each patient's healthcare plans, mandated payment rates in the case of Medicare and Medicaid programs, and historical cash collections (net of recoveries) in combination with expected collections from third party payors. In addition, the Company records net revenue from uninsured patients at an estimated realizable value based on historical cash collections (net of recoveries). The price concession includes an estimate of uncollectible balances due from uninsured patients, uncollectible co-pay and deductible balances due from insured patients and special charges, if any, for uncollectible balances due from managed care, commercial and governmental payors. The relationship between gross charges and the transaction price recognized is significantly influenced by payor mix, as collections on gross charges may vary significantly depending on whether and with whom the patients the Company provides services to in the period are insured and the Company's contractual relationships with those payors. Payor mix is subject to change as additional patient and payor information is obtained after the period services are provided. The Company periodically assesses the estimates of unbilled revenue, contractual adjustments and discounts for uninsured patients and payor mix for a period of at least one year following the date of service by analyzing actual results, including cash collections, against estimates. Changes in these estimates are charged or credited to the consolidated statement of operations in the period that the assessment is made. Significant changes in payor mix, contractual arrangements with payors, specialty mix, acuity, business office operations, general economic conditions and health care coverage provided by federal or state governments or private insurers may have a significant impact on estimates and significantly affect the results of operations and cash flows. Concentration of credit risk with respect to other payors is limited due to the large number of such payors. In certain circumstances, federal law requires providers to render emergency medical services to any patient who requires care regardless of their ability to pay. Services to these patients are not considered to be charity care and provisions for uncompensated care for these services are estimated accordingly. Although the Company provides a level of charity care, it is not significant to the Company's net revenues. The Company's billing and accounting systems provide historical trends of cash collections and contractual write-offs, accounts receivable agings and established fee adjustments from third-party payors. These estimates are recorded and monitored monthly as revenues are recognized. These estimates are not, however, established from billing system generated contractual adjustments based on fee schedules for the patient’s insurance plan for each patient encounter. The principal exposure for uncollectible fee for service visits is from self-pay patients and, to a lesser extent, for co-payments and deductibles from patients with insurance.
Accounts Receivable	Accounts Receivable The Company manages accounts receivable by regularly reviewing its accounts and contracts and by providing appropriate adjustments to the estimate of the transaction price. Some of the factors considered by management in determining the adjustments are the historical trends of cash collections, contractual and uninsured write-offs, accounts receivable agings, established fee schedules, contracts with payors, changes in payor mix and procedure statistics. Actual collections of accounts receivable in subsequent periods may require changes in the estimated transaction price. The Company tests its analysis by comparing cash collections to net fee for service revenues and monitoring self-pay utilization. In addition, when actual collection percentages differ from expected results, on a contract by contract basis, supplemental detailed reviews of the outstanding accounts receivable balances may be performed by the Company’s billing operations to determine whether there are facts and circumstances existing that may cause a different conclusion as to the estimate of the collectability of that contract’s accounts receivable from the estimate resulting from using the historical collection experience. The Company also supplements its analysis for its physician services segment quarterly using a hindsight calculation that utilizes write-off data for all payor classes during the previous twelve month period to estimate adjustments to the transaction price at a point in time. Changes in these estimates, if any, are charged or credited to the consolidated statements of operations in the period of change. Material changes in estimates may result from unforeseen write-offs of patient or third-party accounts receivable, unsuccessful disputes with managed care payors, adverse macro-economic conditions which limit patients’ ability to meet their financial obligations for the care provided by physicians, or broad changes to government regulations that adversely impact reimbursement rates for services provided by the Company. Significant changes in payor mix, changes in contractual arrangements with payors, business office operations, general economic conditions and health care coverage provided by federal or state governments or private insurers may have a significant impact on the Company’s estimates and significantly affect its results of operations and cash flows. Concentration of credit risk is limited by the diversity and number of facilities, patients, payors and by the geographic dispersion of the Company’s operations.
Acquisitions and Disposals	Acquisitions and Disposals The Company accounts for its business combinations under the fundamental requirements of the acquisition method of accounting and under the premise that an acquirer be identified for each business combination. The acquirer is the entity that obtains control of one or more businesses in the business combination and the acquisition date is the date the acquirer achieves control. The assets acquired, liabilities assumed and any noncontrolling interests in the acquired business at the acquisition date are recognized at their fair values as of that date, and the direct costs incurred in connection with the business combination are recorded and expensed separately from the business combination. Acquisitions in which the Company is able to exert significant influence but does not have control are accounted for using the equity method.
Investments in Unconsolidated Affiliates	Investments in Unconsolidated Affiliates Investments in unconsolidated affiliates in which the Company exerts significant influence but does not control or otherwise consolidate are accounted for using the equity method. Equity method investments are initially recorded at cost, unless such investments are a result of the Company entering into a transaction whereby the Company loses control of a previously controlled entity but retains a noncontrolling interest. Such transactions, which result in the deconsolidation of a previously consolidated entity, are measured at fair value. The fair value measurement utilizes Level 3 inputs, which include unobservable data, to measure the fair value of the retained noncontrolling interest. The fair value determination is generally based on a combination of multiple valuation methods, which can include discounted cash flow, income approach, or market value approach, which incorporates estimates of future earnings and market valuation multiples for certain guideline companies. These investments are included as investments in unconsolidated affiliates in the accompanying consolidated balance sheets. The Company’s share of the profits and losses from these investments is reported in equity in earnings of unconsolidated affiliates in the accompanying consolidated statements of operations. The Company monitors its investments for other-than-temporary impairment by considering factors such as current economic and market conditions and the operating performance of the companies and records reductions in carrying values when necessary.
Goodwill and Intangible Assets	Amortizable Intangible Assets Estimated Useful Life Weighted Average Amortization Period Customer relationships 17 to 20 years 17.9 Capitalized software 3 to 7 years 5.4 Agreements, contracts and other 3 to 10 years 3.0
Insurance Reserves	Insurance Reserves Insurance reserves are established for professional and general liability claims utilizing policies with both fully-insured and self-insured components. This includes the use of an off-shore captive insurance program through wholly owned subsidiaries for certain professional (medical malpractice) and general liability programs. In those instances where the Company has obtained third-party insurance coverage, the Company normally retains liability for the first $1 million to $3 million of the loss. Insurance reserves cover known claims and incidents within the level of Company retention that may result in the assertion of additional claims, as well as claims from unknown incidents that may be asserted arising from activities through March 31, 2018 . The Company establishes reserves for claims based upon an assessment of claims reported and claims incurred but not reported. The reserves are established based on consultation with third-party independent actuaries using actuarial principles and assumptions that consider a number of factors, including historical claim payment patterns (including legal costs) and changes in case reserves and the assumed rate of inflation in health care costs and property damage repairs. Claim reserves are not discounted. Provisions for insurance expense included in the statements of operations include provisions determined in consultation with third-party actuaries and premiums paid to third-party insurers.
Stock Incentive Plans	Stock Incentive Plans Transactions in which the Company receives employee and non-employee services in exchange for the Company’s equity instruments or liabilities that are based on the fair value of the Company’s equity securities or may be settled by the issuance of these securities are accounted using a fair value method. The Company applies the Black-Scholes method of valuation in determining share-based compensation expense for option awards. For performance share units, the Company utilizes the Monte-Carlo method of valuation. For awards with graded vesting schedules, the Company recognizes compensation expense using the accelerated method. Forfeitures are recognized as incurred. Under Company policy, shares held by outside directors and senior management are subject to certain stock ownership guidelines and restrictions on hedging and pledging.
Earnings per Share	Earnings per Share Basic net earnings (loss) attributable to Envision Healthcare Corporation common stockholders, per common share, excludes dilution and is computed by dividing net earnings (loss) attributable to Envision Healthcare Corporation common stockholders by the weighted-average number of common shares outstanding during the period. Diluted net earnings (loss) attributable to Envision Healthcare Corporation common stockholders, per common share is computed by dividing net earnings (loss) attributable to Envision Healthcare Corporation common stockholders by the weighted-average number of common shares outstanding during the period plus any potential dilutive common share equivalents, including shares issuable (i) upon the vesting of restricted stock awards, restricted stock units and performance stock units as determined under the treasury stock method and (ii) prior to July 3, 2017, the mandatory conversion date, upon conversion of the Company preferred stock as determined under the if-converted method. For purposes of calculating diluted earnings (loss) per share, preferred stock dividends have been subtracted from both net earnings (loss) from continuing operations attributable to Envision Healthcare Corporation and net earnings (loss) attributable to Envision Healthcare Corporation common stockholders in periods in which utilizing the if-converted method would be anti-dilutive.
Income Taxes	Income Taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. The Company applies recognition thresholds and measurement attributes for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return as it relates to accounting for uncertainty in income taxes. In addition, it is the Company’s policy to recognize interest accrued and penalties, if any, related to unrecognized benefits as income tax expense in its consolidated statements of operations. The Company does not expect significant changes to its tax positions or liability for tax uncertainties during the next 12 months. The Company and its subsidiaries file income tax returns in the U.S. federal jurisdiction and various state jurisdictions. The Company is no longer subject to U.S. federal income tax examinations for the years prior to 2014 . With few exceptions, the Company is no longer subject to U.S. state income tax examinations for the years prior to 2013 .
Segments	Segment Reporting The Company has aligned financial results into two operating and reportable segments: physician services and ambulatory services. The physician services segment includes the Company’s hospital-based and non-hospital-based physician services business. The ambulatory services segment includes the Company’s ambulatory surgery business, which acquires, develops, owns and operates ASCs and surgical hospitals in partnership with physicians and health systems. The Company’s financial information by segment is prepared on an internal management reporting basis and includes allocations of corporate expenses. This financial information is used by the chief operating decision maker to allocate resources and assess the performance of the segments. The Company’s segments have been defined based on the separate financial information that is regularly produced and reviewed by the Company’s chief operating decision maker, which is its Chief Executive Officer.

Basis of Presentation (Tables)

Basis of Presentation (Tables)	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Schedule of Supplemental Cash Flow Statement Disclosure	The following presents supplemental cash flow statement disclosure (in millions): Three Months Ended March 31, 2018 2017 Supplemental cash flow information: Interest payments $ 94.9 $ 87.1 Income tax paid, net of refunds $ (0.5 ) $ 5.3

Revenue Recognition and Accou28

Revenue Recognition and Accounts Receivable (Tables)	3 Months Ended
	Mar. 31, 2018
Revenue Recognition [Abstract]
Schedule of Net Revenue by Major Payors	Net revenue (after provision for uncollectibles in 2017) by the Company's segments consists of the following major payors (in millions): Three Months Ended March 31, 2018 Physician Services Ambulatory Services Total Medicare $ 324.1 18 % $ 69.4 23 % $ 393.5 19 % Medicaid 137.8 8 6.6 2 144.4 7 Commercial and managed care 1,007.3 57 183.8 60 1,191.1 57 Self-pay 33.2 2 41.4 13 74.6 4 Net fee for service revenue 1,502.4 85 301.2 98 1,803.6 87 Contract and other revenue 267.0 15 6.4 2 273.4 13 Net revenue $ 1,769.4 100 % $ 307.6 100 % $ 2,077.0 100 % Three Months Ended March 31, 2017 Physician Services Ambulatory Services Total Medicare $ 316.5 20 % $ 74.7 24 % $ 391.2 21 % Medicaid 120.4 8 7.7 2 128.1 7 Commercial and managed care 880.5 56 192.9 61 1,073.4 57 Self-pay 23.6 2 34.7 11 58.3 3 Net fee for service revenue 1,341.0 86 310.0 98 1,651.0 88 Contract and other revenue 221.7 14 5.9 2 227.6 12 Net revenue $ 1,562.7 100 % $ 315.9 100 % $ 1,878.6 100 %

Acquisitions and Disposals (Tab

Acquisitions and Disposals (Tables)	3 Months Ended
	Mar. 31, 2018
Business Combinations [Abstract]
Schedule of Business Acquisition	The acquisition date fair value of the total consideration transferred and acquisition date fair value of each major financial class for individual acquisitions completed in the three months ended March 31, 2018 , including post acquisition date adjustments, are as follows (in millions): Accounts receivable $ 2.3 Goodwill 38.5 Intangible assets 33.8 Other accrued liabilities (1.0 ) Deferred income taxes (2.3 ) Other long-term liabilities (1.1 ) Acquisition date fair value of total consideration transferred $ 70.2 Represents the preliminary allocation of fair value of acquired assets and liabilities associated with these acquisitions at March 31, 2018 .

Discontinued Operations (Tables

Discontinued Operations (Tables)	3 Months Ended
	Mar. 31, 2018
Discontinued Operations and Disposal Groups [Abstract]
Summary of Discontinued Operations	The following table summarizes the results of discontinued operations for the three months ended March 31, 2018 and 2017 (in millions): Three Months Ended March 31, 2018 (1) 2017 Net revenues $ 511.7 $ 593.5 Operating expenses: Salaries and benefits 289.0 337.9 Supply cost 12.0 13.9 Insurance expense 22.2 18.7 Other operating expenses 137.8 152.3 Transaction and integration costs 14.8 4.3 Depreciation and amortization 29.4 34.2 Total operating expenses 505.2 561.3 Equity in earnings of unconsolidated affiliates 0.1 0.2 Gain on assets held for sale 14.7 — Operating income 21.3 32.4 Interest expense, net 17.8 22.4 Earnings before income taxes $ 3.5 $ 10.0 Results of discontinued operations: Earnings from discontinued operations $ 3.5 $ 10.0 Income tax expense of discontinued operations (126.8 ) (488.2 ) Net loss from discontinued operations $ (123.3 ) $ (478.2 ) (1) January 1, 2018 through March 14, 2018

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Summary of Financial Instruments by Fair Value Hierarchy Levels	The following table summarizes the valuation of the Company’s financial instruments by the above fair value hierarchy levels as of March 31, 2018 and December 31, 2017 (in millions): March 31, 2018 Level 1 Level 2 Level 3 Total Assets: U.S. Treasuries $ 1.3 $ — $ — $ 1.3 Corporate bonds/Fixed income 60.4 22.7 — 83.1 Corporate equity securities 10.5 — — 10.5 Liabilities: Contingent consideration — — 7.4 7.4 December 31, 2017 Level 1 Level 2 Level 3 Total Assets: U.S. Treasuries $ 1.8 $ — $ — $ 1.8 Corporate bonds/Fixed income 10.4 30.8 — 41.2 Corporate equity securities 12.4 — — 12.4 Liabilities: Contingent consideration — — 8.0 8.0
Summary of Change in Financial Instruments Classified as Level 3	The following table summarizes the change in financial instruments classified as Level 3 in the fair value hierarchy as of March 31, 2018 (in millions): Balance at December 31, 2017 $ 8.0 Decrease due to current period payments (1.0 ) Increase due to current period acquisitions 0.4 Balance at March 31, 2018 $ 7.4
Schedule Of Insurance Collateral	Insurance collateral consisted of the following as of March 31, 2018 and December 31, 2017 (in millions): March 31, 2018 December 31, 2017 Available-for-sale securities: U.S. Treasuries $ 1.3 $ 1.8 Corporate bonds/Fixed income 83.1 41.2 Corporate equity securities — 12.4 Total available-for-sale securities 84.4 55.4 Corporate equity securities 10.5 — Restricted cash deposits and other 18.6 30.8 Insurance collateral $ 113.5 $ 86.2
Schedule of Amortized Cost Basis and Aggregate Fair value of Company's Available-for-Sale Securities	Amortized cost basis and aggregate fair value of the Company's available-for-sale and corporate equity securities as of March 31, 2018 and December 31, 2017 were as follows (in millions): March 31, 2018 Gross Gross Cost Unrealized Unrealized Fair Basis Gains Losses Value Description: U.S. Treasuries $ 1.3 $ — $ — $ 1.3 Corporate bonds/Fixed income 83.4 0.2 (0.5 ) 83.1 Total available-for-sale securities 84.7 0.2 (0.5 ) 84.4 Corporate equity securities 9.1 1.4 — 10.5 Total corporate equity and available-for-sale securities $ 93.8 $ 1.6 $ (0.5 ) $ 94.9 December 31, 2017 Gross Gross Cost Unrealized Unrealized Fair Basis Gains Losses Value Description: U.S. Treasuries $ 1.8 $ — $ — $ 1.8 Corporate bonds/Fixed income 40.7 0.7 (0.2 ) 41.2 Corporate equity securities 10.5 1.9 — 12.4 Total available-for-sale securities $ 53.0 $ 2.6 $ (0.2 ) $ 55.4
Schedule of Impairment Losses, Investments	The Company's available-for-sale investment securities that were temporarily impaired as of March 31, 2018 and December 31, 2017 were as follows (in millions): March 31, 2018 December 31, 2017 Fair Unrealized Fair Unrealized Value Loss Value Loss Description: Corporate bonds/Fixed income $ 43.2 $ (0.5 ) $ 16.0 $ (0.2 )

Prepaid and Other Current Ass32

Prepaid and Other Current Assets (Tables)	3 Months Ended
	Mar. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Schedule of Prepaid and Other Current Assets	The following table presents a summary of items comprising prepaid and other current assets in the accompanying consolidated balance sheets as of March 31, 2018 and December 31, 2017 (in millions): March 31, December 31, 2018 2017 Income taxes receivable (1) $ — $ 74.3 Prepaid expenses 64.7 59.9 Other 33.5 31.4 Total prepaid and other current assets $ 98.2 $ 165.6 (1) At March 31, 2018 , the Company's income taxes receivable were reclassified against its income taxes payable as the Company expects to utilize such receivables to offset amounts due as a result of the sale of the medical transportation business. See Notes 5 and 10 .

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Changes In Carrying Amount Of Goodwill	The changes in the carrying amount of goodwill for the three months ended March 31, 2018 are as follows (in millions): Physician Services Ambulatory Services Total Balance at December 31, 2017 $ 5,410.6 $ 2,125.5 $ 7,536.1 Goodwill acquired, including post acquisition adjustments 38.7 (0.3 ) 38.4 Goodwill disposed, including impact of deconsolidation transactions — (3.8 ) (3.8 ) Balance at March 31, 2018 $ 5,449.3 $ 2,121.4 $ 7,570.7
Schedule of Finite-Lived Intangible Assets	Intangible Assets Amortizable Intangible Assets Estimated Useful Life Weighted Average Amortization Period Customer relationships 17 to 20 years 17.9 Capitalized software 3 to 7 years 5.4 Agreements, contracts and other 3 to 10 years 3.0 Intangible assets at March 31, 2018 and December 31, 2017 consisted of the following (in millions): March 31, 2018 December 31, 2017 Gross Gross Carrying Accumulated Carrying Accumulated Amount Amortization Net Amount Amortization Net Amortizable intangible assets: Customer relationships $ 3,480.1 $ (365.1 ) $ 3,115.0 $ 3,446.7 $ (321.8 ) $ 3,124.9 Capitalized software 179.6 (83.6 ) 96.0 166.9 (73.3 ) 93.6 Agreements, contracts and other 13.9 (5.6 ) 8.3 13.5 (4.9 ) 8.6 Total amortizable intangible assets 3,673.6 (454.3 ) 3,219.3 3,627.1 (400.0 ) 3,227.1 Non-amortizable intangible assets: Trade names 430.0 — 430.0 430.0 — 430.0 Restrictive covenant arrangements 8.4 — 8.4 8.4 — 8.4 Total non-amortizable intangible assets 438.4 — 438.4 438.4 — 438.4 Total intangible assets $ 4,112.0 $ (454.3 ) $ 3,657.7 $ 4,065.5 $ (400.0 ) $ 3,665.5

Other Accrued Liabilities (Tabl

Other Accrued Liabilities (Tables)	3 Months Ended
	Mar. 31, 2018
Accrued Liabilities, Current [Abstract]
Schedule of Other Accrued Liabilities	The following table presents a summary of items comprising other accrued liabilities in the accompanying consolidated balance sheets as of March 31, 2018 and December 31, 2017 (in millions): March 31, December 31, 2018 2017 Insurance reserves $ 80.0 $ 77.1 Refunds payable 26.3 28.9 Deferred revenue 16.5 18.9 Income taxes payable (1) 241.8 — Other 184.5 156.7 Total other accrued liabilities $ 549.1 $ 281.6 (1) Amount includes the income tax payable following the sale of the medical transportation business that will be paid in the second quarter of 2018 .

Long-term Debt (Tables)

Long-term Debt (Tables)	3 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Components Of Long-Term Debt	Long-term debt at March 31, 2018 and December 31, 2017 consisted of the following (in millions): March 31, December 31, 2018 2017 ABL Facility $ — $ — Term Loan B - 2023 2,256.3 3,956.3 Senior Unsecured Notes due 2022 (5.625%) 1,100.0 1,100.0 Senior Unsecured Notes due 2022 (5.125%) 750.0 750.0 Senior Unsecured Notes due 2024 (6.250%) 550.0 550.0 Other debt due through 2025 26.6 24.1 Capitalized lease arrangements due through 2031 31.3 32.3 4,714.2 6,412.7 Less current portion 12.7 52.1 Less net deferred financing costs 93.0 97.3 Long-term debt $ 4,608.5 $ 6,263.3

Insurance Reserves (Tables)

Insurance Reserves (Tables)	3 Months Ended
	Mar. 31, 2018
Payables and Accruals [Abstract]
Schedule of Accrued Professional Liabilities	At March 31, 2018 and December 31, 2017 , the Company's accrued insurance reserves are presented in the accompanying consolidated balance sheets as a component of other accrued liabilities and insurance reserves as follows (in millions): March 31, 2018 December 31, 2017 Third-party insurance reserves $ 110.4 $ 111.3 Estimated losses under self-insured programs 148.1 170.3 Incurred but not reported losses 145.0 114.0 Total accrued insurance reserves 403.5 395.6 Less estimated losses payable within one year 80.0 77.1 Total $ 323.5 $ 318.5
Schedule of Self Insurance Reserve Roll Forward	The changes to the Company's estimated losses under insurance programs as of March 31, 2018 were as follows (in millions): Balance at December 31, 2017 $ 395.6 Assumed liabilities through acquisitions 0.5 Provision related to current period self-insurance reserves (1) 20.4 Benefit related to changes in prior period self-insurance reserves 9.0 Payments for prior period self-insurance reserves (20.2 ) Change in third-party insurance self-insurance reserves 1.7 Other, net including post-acquisition adjustments (3.5 ) Balance at March 31, 2018 $ 403.5 (1) Total insurance expense for the period ended March 31, 2018 and 2017 were $47.6 million and $37.6 million , respectively, which also included premiums paid to third-party insurers and premiums paid to captive insurance companies of certain of our joint venture partners.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Schedule Of Changes In Non-Vested Restricted Shares	A summary of the status of and changes for non-vested restricted shares for the periods presented below is summarized as follows: Weighted Number Average of Shares Grant Price Non-vested awards at December 31, 2017 1,410,461 $ 65.52 Shares granted 682,119 40.01 Shares vested (512,103 ) 63.43 Shares forfeited (104,924 ) 63.87 Non-vested awards at March 31, 2018 1,475,553 54.57
Schedule Of Stock Option Activity	A summary of stock option activity for the periods presented below is summarized as follows: Weighted Weighted Average Average Remaining Number Exercise Contractual of Shares Price Term (in years) Outstanding at December 31, 2017 2,826,021 $ 19.70 4.3 Options exercised with total intrinsic value of $1.0 million (38,611 ) 11.13 Options canceled (46,952 ) 66.88 Outstanding at March 31, 2018 with an aggregate intrinsic value of $64.7 million 2,740,458 19.01 2.8 Vested and Exercisable at March 31, 2018 with an aggregate intrinsic value of $64.7 million 2,666,440 17.70 2.7
Share-Based Activity	Other information pertaining to share-based activity during the three months ended March 31, 2018 and 2017 was as follows (in millions): Three Months Ended March 31, 2018 2017 Share-based compensation expense from continuing operations $ 7.4 $ 14.6 Fair value of shares vested 18.7 28.4 Cash received from option exercises 0.3 1.1 Tax expense (benefit) from exercises of share based awards 4.6 (2.9 )
Schedule of Earnings Per Share, Basic and Diluted	The following is a reconciliation of the numerator and denominators of basic and diluted earnings (loss) per share (dollars in millions; per share amounts in thousands): Three Months Ended March 31, Earnings Shares Per Share (Numerator) (Denominator) Amount 2018: Net earnings from continuing operations attributable to Envision Healthcare Corporation common stockholders (basic) $ 36.9 120,552 $ 0.31 Effect of dilutive securities, options and non-vested shares — 1,802 Net earnings from continuing operations attributable to Envision Healthcare Corporation common stockholders (diluted) $ 36.9 122,354 $ 0.30 2017: Net earnings from continuing operations attributable to Envision Healthcare Corporation common stockholders (basic) $ 30.7 116,563 $ 0.26 Effect of dilutive securities, options and non-vested shares — 2,912 Net earnings attributable to Envision Healthcare Corporation common stockholders (diluted) $ 30.7 119,475 $ 0.26

Segment Reporting (Tables)

Segment Reporting (Tables)	3 Months Ended
	Mar. 31, 2018
Segment Reporting [Abstract]
Schedule of Segment Reporting Information	The following table presents financial information for each reportable segment (in millions): Three Months Ended March 31, 2018 2017 Net Revenue: Physician Services $ 1,769.4 $ 1,562.7 Ambulatory Services 307.6 315.9 Total $ 2,077.0 $ 1,878.6 Adjusted EBITDA: Physician Services $ 150.1 $ 150.1 Ambulatory Services 57.5 60.2 Total $ 207.6 $ 210.3 Adjusted EBITDA: $ 207.6 $ 210.3 Net earnings attributable to noncontrolling interests 51.2 54.1 Interest expense, net (63.6 ) (52.4 ) Depreciation and amortization (70.6 ) (71.3 ) Share-based compensation (7.4 ) (14.6 ) Transaction and integration costs (21.4 ) (21.5 ) Impairment charges (0.7 ) (0.3 ) Net gain (loss) on disposals and deconsolidations, net of noncontrolling interests (0.6 ) 0.3 Net unrealized loss on equity securities (0.9 ) — Earnings before income taxes $ 93.6 $ 104.6 Acquisition and Capital Expenditures: Physician Services $ 85.2 $ 66.0 Ambulatory Services 7.4 27.8 Total $ 92.6 $ 93.8

Financial Information for the39

Financial Information for the Company and Its Subsidiaries (Tables)	3 Months Ended
	Mar. 31, 2018
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Condensed Consolidating Balance Sheet	Condensed Consolidating Balance Sheet - March 31, 2018 (In millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Consolidated Assets Current assets: Cash and cash equivalents $ 502.3 $ 57.6 $ 207.5 $ — $ 767.4 Insurance collateral — — 113.5 — 113.5 Accounts receivable, net — 361.5 1,171.3 — 1,532.8 Supplies inventory — — 22.1 — 22.1 Prepaid and other current assets 19.6 5.4 73.3 (0.1 ) 98.2 Total current assets 521.9 424.5 1,587.7 (0.1 ) 2,534.0 Property and equipment, net 20.3 80.4 183.3 — 284.0 Investments in and advances to affiliates 8,545.0 929.7 — (9,317.3 ) 157.4 Intercompany receivable 2,991.1 — — (2,991.1 ) — Goodwill — 1,705.9 — 5,864.8 7,570.7 Intangible assets, net 29.4 1,123.6 2,504.7 — 3,657.7 Other assets 66.1 42.6 72.0 — 180.7 Total assets $ 12,173.8 $ 4,306.7 $ 4,347.7 $ (6,443.7 ) $ 14,384.5 Liabilities and Equity Current liabilities: Current portion of long-term debt $ — $ 0.1 $ 12.6 $ — $ 12.7 Accounts payable 15.5 11.4 23.5 — 50.4 Accrued salaries and benefits 8.6 73.4 389.0 — 471.0 Accrued interest 35.0 — 0.1 — 35.1 Other accrued liabilities 324.7 162.5 62.0 (0.1 ) 549.1 Total current liabilities 383.8 247.4 487.2 (0.1 ) 1,118.3 Long-term debt 4,563.3 0.2 45.0 — 4,608.5 Deferred income taxes 721.8 — 181.0 — 902.8 Insurance reserves 6.2 89.8 227.5 — 323.5 Other long-term liabilities 47.2 74.0 34.4 — 155.6 Intercompany payable — 2,553.9 437.2 (2,991.1 ) — Noncontrolling interests – redeemable — — 74.1 112.2 186.3 Equity: Total Envision Healthcare Corporation equity 6,451.5 1,341.4 2,760.6 (4,102.0 ) 6,451.5 Noncontrolling interests – non-redeemable — — 100.7 537.3 638.0 Total equity 6,451.5 1,341.4 2,861.3 (3,564.7 ) 7,089.5 Total liabilities and equity $ 12,173.8 $ 4,306.7 $ 4,347.7 $ (6,443.7 ) $ 14,384.5 Condensed Consolidating Balance Sheet - December 31, 2017 (In millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Consolidated Assets Current assets: Cash and cash equivalents $ 110.0 $ 10.2 $ 192.0 $ — $ 312.2 Insurance collateral — — 86.2 — 86.2 Accounts receivable, net — 275.1 1,130.7 — 1,405.8 Supplies inventory — — 22.7 — 22.7 Prepaid and other current assets 7.5 75.8 82.7 (0.4 ) 165.6 Current assets held for sale — 2,751.8 — — 2,751.8 Total current assets 117.5 3,112.9 1,514.3 (0.4 ) 4,744.3 Property and equipment, net 10.8 103.2 188.7 — 302.7 Investments in and advances to affiliates 10,713.9 1,971.9 — (12,529.1 ) 156.7 Intercompany receivable 2,924.9 227.7 — (3,152.6 ) — Goodwill — 1,543.3 — 5,992.8 7,536.1 Intangible assets, net 12.9 1,256.1 2,396.5 — 3,665.5 Other assets 50.0 43.6 73.7 — 167.3 Total assets $ 13,830.0 $ 8,258.7 $ 4,173.2 $ (9,689.3 ) $ 16,572.6 Liabilities and Equity Current liabilities: Current portion of long-term debt $ 40.0 $ 0.1 $ 12.0 $ — $ 52.1 Accounts payable 2.0 23.1 37.1 — 62.2 Accrued salaries and benefits 5.5 218.1 324.4 — 548.0 Accrued interest 52.1 — — — 52.1 Other accrued liabilities 3.1 162.5 116.4 (0.4 ) 281.6 Current liabilities held for sale — 399.1 — — 399.1 Total current liabilities 102.7 802.9 489.9 (0.4 ) 1,395.1 Long-term debt 6,218.7 0.3 44.3 — 6,263.3 Deferred income taxes 940.0 — 149.3 — 1,089.3 Insurance reserves 6.0 106.3 206.2 — 318.5 Other long-term liabilities 35.5 78.5 35.9 — 149.9 Intercompany payable — 2,673.6 479.0 (3,152.6 ) — Noncontrolling interests – redeemable — — 75.3 111.8 187.1 Equity: Total Envision Healthcare Corporation equity 6,527.1 4,597.1 2,544.4 (7,141.5 ) 6,527.1 Noncontrolling interests – non-redeemable — — 148.9 493.4 642.3 Total equity 6,527.1 4,597.1 2,693.3 (6,648.1 ) 7,169.4 Total liabilities and equity $ 13,830.0 $ 8,258.7 $ 4,173.2 $ (9,689.3 ) $ 16,572.6
Condensed Consolidating Statement of Operations	Condensed Consolidating Statement of Operations - For the Three Months Ended March 31, 2018 (In millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Consolidated Net revenue $ 7.3 $ 590.3 $ 1,523.1 $ (43.7 ) $ 2,077.0 Operating expenses: Salaries and benefits 16.6 531.7 990.8 (0.2 ) 1,538.9 Supply cost — 5.2 49.2 — 54.4 Insurance expense — 11.7 73.9 (38.0 ) 47.6 Other operating expenses 7.6 5.3 183.4 (5.5 ) 190.8 Transaction and integration costs 3.3 18.0 0.1 — 21.4 Impairment charges — 0.7 — — 0.7 Depreciation and amortization 1.6 52.0 17.0 — 70.6 Total operating expenses 29.1 624.6 1,314.4 (43.7 ) 1,924.4 Net gain (loss) on disposals and deconsolidations — 0.2 (1.2 ) — (1.0 ) Equity in earnings of unconsolidated affiliates (54.6 ) 147.1 — (86.7 ) 5.8 Operating income (loss) (76.4 ) 113.0 207.5 (86.7 ) 157.4 Interest expense, net 7.1 40.8 15.7 — 63.6 Other income (expense), net (0.5 ) 0.3 — — (0.2 ) Earnings (loss) before income taxes (84.0 ) 72.5 191.8 (86.7 ) 93.6 Income tax expense (benefit) 2.4 3.8 (0.7 ) — 5.5 Net earnings (loss) from continuing operations (86.4 ) 68.7 192.5 (86.7 ) 88.1 Net loss from discontinued operations — (123.3 ) — — (123.3 ) Net earnings (loss) (86.4 ) (54.6 ) 192.5 (86.7 ) (35.2 ) Less net earnings attributable to noncontrolling interests — — 51.2 — 51.2 Net earnings (loss) attributable to Envision Healthcare Corporation common stockholders $ (86.4 ) $ (54.6 ) $ 141.3 $ (86.7 ) $ (86.4 ) Comprehensive income (loss) attributable to Envision Healthcare Corporation $ (86.4 ) $ (54.6 ) $ 142.2 $ (86.7 ) $ (85.5 ) Condensed Consolidating Statement of Operations - For the Three Months Ended March 31, 2017 (In millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Consolidated Net revenue $ 8.2 $ 440.1 $ 1,468.7 $ (38.4 ) $ 1,878.6 Operating expenses: Salaries and benefits 22.7 403.9 932.6 (0.2 ) 1,359.0 Supply cost — 1.2 52.9 — 54.1 Insurance expense 0.5 9.8 50.5 (23.2 ) 37.6 Other operating expenses 6.7 35.4 157.0 (15.0 ) 184.1 Transaction and integration costs 2.3 18.7 0.5 — 21.5 Impairment charges — 0.3 — — 0.3 Depreciation and amortization 1.5 54.3 15.5 — 71.3 Total operating expenses 33.7 523.6 1,209.0 (38.4 ) 1,727.9 Net gain (loss) on disposals and deconsolidations — 1.8 (1.5 ) — 0.3 Equity in earnings of unconsolidated affiliates (399.3 ) 163.7 — 240.5 4.9 Operating income (loss) (424.8 ) 82.0 258.2 240.5 155.9 Interest expense, net 9.0 33.0 10.4 — 52.4 Other income, net 1.0 — 0.1 1.1 Earnings (loss) before income taxes (432.8 ) 49.0 247.9 240.5 104.6 Income tax expense (benefit) 12.4 (29.9 ) 35.0 — 17.5 Net earnings (loss) from continuing operations (445.2 ) 78.9 212.9 240.5 87.1 Net loss from discontinued operations — (478.2 ) — — (478.2 ) Net earnings (loss) (445.2 ) (399.3 ) 212.9 240.5 (391.1 ) Less net earnings attributable to noncontrolling interests — — 54.1 — 54.1 Net earnings (loss) attributable to Envision Healthcare Corporation stockholders (445.2 ) (399.3 ) 158.8 240.5 (445.2 ) Preferred stock dividends (2.3 ) — — — (2.3 ) Net earnings (loss) attributable to Envision Healthcare Corporation common stockholders $ (447.5 ) $ (399.3 ) $ 158.8 $ 240.5 $ (447.5 ) Comprehensive income (loss) attributable to Envision Healthcare Corporation $ (445.2 ) $ (399.3 ) $ 159.7 $ 240.5 $ (444.3 )
Condensed Consolidating Statement of Cash Flows	Condensed Consolidating Statement of Cash Flows - For the Three Months Ended March 31, 2018 (In millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Consolidated Cash flows from operating activities: Net cash flows provided by (used in) operating activities $ 26.4 $ (96.2 ) $ 245.5 $ (138.4 ) $ 37.3 Cash flows from investing activities: Acquisitions and related expenses (66.1 ) (71.6 ) — 66.1 (71.6 ) Acquisition of property and equipment (0.5 ) (37.2 ) (7.6 ) — (45.3 ) Net proceeds from sale of medical transportation business 2,279.7 — — — 2,279.7 Purchases of marketable securities — — (57.3 ) — (57.3 ) Maturities of marketable securities — — 17.2 — 17.2 Other, net — 2.6 (1.5 ) — 1.1 Net cash flows provided by (used in) investing activities 2,213.1 (106.2 ) (49.2 ) 66.1 2,123.8 Cash flows from financing activities: Proceeds from long-term borrowings 120.0 0.3 5.2 — 125.5 Repayment on long-term borrowings (1,820.0 ) (0.8 ) (3.4 ) — (1,824.2 ) Distributions to owners, including noncontrolling interests — (69.2 ) (122.3 ) 138.4 (53.1 ) Capital contributions — 66.1 — (66.1 ) — Changes in intercompany balances with affiliates, net (143.7 ) 213.4 (69.7 ) — — Other, net (3.5 ) — (2.8 ) — (6.3 ) Net cash flows provided by (used in) financing activities (1,847.2 ) 209.8 (193.0 ) 72.3 (1,758.1 ) Net increase in cash, cash equivalents, restricted cash and restricted cash equivalents 392.3 7.4 3.3 — 403.0 Cash, cash equivalents, restricted cash and restricted cash equivalents, beginning of period 110.0 50.2 222.8 — 383.0 Cash, cash equivalents, restricted cash and restricted cash equivalents, end of period $ 502.3 $ 57.6 $ 226.1 $ — $ 786.0 Condensed Consolidating Statement of Cash Flows - For the Three Months Ended March 31, 2017 (In millions) Parent Issuer Guarantor Subsidiaries Non-Guarantor Subsidiaries Consolidating Adjustments Total Consolidated Cash flows from operating activities: Net cash flows provided by operating activities $ 26.8 $ 123.2 $ 95.5 $ (147.4 ) $ 98.1 Cash flows from investing activities: Acquisitions and related expenses — (73.3 ) — 0.2 (73.1 ) Acquisition of property and equipment (0.2 ) (27.7 ) (12.8 ) — (40.7 ) Purchases of marketable securities — — (3.4 ) — (3.4 ) Maturities of marketable securities — — 0.5 — 0.5 Other, net — 11.7 5.6 — 17.3 Net cash flows used in investing activities (0.2 ) (89.3 ) (10.1 ) 0.2 (99.4 ) Cash flows from financing activities: Proceeds from long-term borrowings — — 3.7 — 3.7 Repayment on long-term borrowings (8.7 ) (0.3 ) (2.9 ) — (11.9 ) Distributions to owners, including noncontrolling interests — (77.3 ) (130.6 ) 147.4 (60.5 ) Changes in intercompany balances with affiliates, net 1.8 19.0 (20.8 ) — — Other, net (9.2 ) (2.3 ) 3.3 (0.2 ) (8.4 ) Net cash flows used in financing activities (16.1 ) (60.9 ) (147.3 ) 147.2 (77.1 ) Net increase (decrease) in cash, cash equivalents, and restricted cash 10.5 (27.0 ) (61.9 ) — (78.4 ) Cash, cash equivalents, restricted cash and restricted cash equivalents, beginning of period 41.6 59.7 259.1 — 360.4 Less cash, cash equivalents, restricted cash and restricted cash equivalents of held for sale assets, end of period — 17.7 — — 17.7 Cash, cash equivalents, restricted cash and restricted cash equivalents, end of period $ 52.1 $ 15.0 $ 197.2 $ — $ 264.3

Basis of Presentation - Narrati

Basis of Presentation - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2018	Jan. 01, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Restricted cash and cash equivalents	$ 18.6		$ 30.8
Retained Earnings Adjustments [Line Items]
Retained earnings	436.9		521.2
Restricted cash and cash equivalents	$ 18.6		30.8	$ 39	$ 28.8
Retained Earnings
Retained Earnings Adjustments [Line Items]
Cumulative effect of accounting change			2.1
Retained Earnings | Accounting Standards Update 2016-01 And 2018-03
Retained Earnings Adjustments [Line Items]
Cumulative effect of accounting change		$ 1.6
Accumulated Other Comprehensive Income (Loss)
Retained Earnings Adjustments [Line Items]
Cumulative effect of accounting change			$ (1.6)
Accumulated Other Comprehensive Income (Loss) | Accounting Standards Update 2016-01 And 2018-03
Retained Earnings Adjustments [Line Items]
Cumulative effect of accounting change		(1.6)
Difference between Revenue Guidance in Effect before and after Topic 606 | Accounting Standards Update 2014-09
Retained Earnings Adjustments [Line Items]
Retained earnings		$ 0.5

Basis of Presentation - Supplem

Basis of Presentation - Supplemental Cash Flow Data (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Supplemental cash flow information:
Interest payments	$ 94.9	$ 87.1
Income tax paid, net of refunds	$ (0.5)	$ 5.3

Variable Interest Entities (Det

Variable Interest Entities (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)business	Mar. 31, 2017USD ($)	Dec. 31, 2017USD ($)
Variable Interest Entity [Line Items]
Revenues	$ 2,077	$ 1,878.6
Receivables from VIEs included in other current assets	98.2		$ 165.6
Not primary beneficiary
Variable Interest Entity [Line Items]
Revenues	1.8	1.7
Receivables from VIEs included in other current assets	$ 3.8		3.9
Unconsolidated
Variable Interest Entity [Line Items]
Number of centers with ownership interest of less than 51% | business	32
Physician Services
Variable Interest Entity [Line Items]
Revenues	$ 1,769.4	1,562.7
Physician Services | Primary beneficiary
Variable Interest Entity [Line Items]
Assets VIE	1,290		1,560
Liabilities VIE	1,060		1,310
Restricted use assets of VIEs	261.1		248.4
Ambulatory Services
Variable Interest Entity [Line Items]
Revenues	307.6	$ 315.9
Ambulatory Services | Primary beneficiary
Variable Interest Entity [Line Items]
Assets VIE	362.3		375.3
Liabilities VIE	119.5		119.8
Restricted use assets of VIEs	$ 172		178.4
Subsidiary of Limited Liability Company or Limited Partnership, ownership interest	51.00%
Debt of VIEs guaranteed by AmSurg	$ 22.1		$ 19.3

Revenue Recognition and Accou43

Revenue Recognition and Accounts Receivable - Schedule of Net Revenue by Major Payers (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenue, Major Customer [Line Items]
Net fee for service revenue	$ 1,803.6	$ 1,651
Contract and other revenue	273.4	227.6
Net revenue	$ 2,077	$ 1,878.6
Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	100.00%	100.00%
Medicare
Revenue, Major Customer [Line Items]
Net fee for service revenue	$ 393.5	$ 391.2
Medicare | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	19.00%	21.00%
Medicaid
Revenue, Major Customer [Line Items]
Net fee for service revenue	$ 144.4	$ 128.1
Medicaid | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	7.00%	7.00%
Commercial and managed care
Revenue, Major Customer [Line Items]
Net fee for service revenue	$ 1,191.1	$ 1,073.4
Commercial and managed care | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	57.00%	57.00%
Self-pay
Revenue, Major Customer [Line Items]
Net fee for service revenue	$ 74.6	$ 58.3
Self-pay | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	4.00%	3.00%
Health Care Organization, Patient Service Revenue | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	87.00%	88.00%
Contract and Other Revenue | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	13.00%	12.00%
Physician Services
Revenue, Major Customer [Line Items]
Net fee for service revenue	$ 1,502.4	$ 1,341
Contract and other revenue	267	221.7
Net revenue	$ 1,769.4	$ 1,562.7
Physician Services | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	100.00%	100.00%
Physician Services | Medicare
Revenue, Major Customer [Line Items]
Net fee for service revenue	$ 324.1	$ 316.5
Physician Services | Medicare | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	18.00%	20.00%
Physician Services | Medicaid
Revenue, Major Customer [Line Items]
Net fee for service revenue	$ 137.8	$ 120.4
Physician Services | Medicaid | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	8.00%	8.00%
Physician Services | Commercial and managed care
Revenue, Major Customer [Line Items]
Net fee for service revenue	$ 1,007.3	$ 880.5
Physician Services | Commercial and managed care | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	57.00%	56.00%
Physician Services | Self-pay
Revenue, Major Customer [Line Items]
Net fee for service revenue	$ 33.2	$ 23.6
Physician Services | Self-pay | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	2.00%	2.00%
Physician Services | Health Care Organization, Patient Service Revenue | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	85.00%	86.00%
Physician Services | Contract and Other Revenue | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	15.00%	14.00%
Ambulatory Services
Revenue, Major Customer [Line Items]
Net fee for service revenue	$ 301.2	$ 310
Contract and other revenue	6.4	5.9
Net revenue	$ 307.6	$ 315.9
Ambulatory Services | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	100.00%	100.00%
Ambulatory Services | Medicare
Revenue, Major Customer [Line Items]
Net fee for service revenue	$ 69.4	$ 74.7
Ambulatory Services | Medicare | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	23.00%	24.00%
Ambulatory Services | Medicaid
Revenue, Major Customer [Line Items]
Net fee for service revenue	$ 6.6	$ 7.7
Ambulatory Services | Medicaid | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	2.00%	2.00%
Ambulatory Services | Commercial and managed care
Revenue, Major Customer [Line Items]
Net fee for service revenue	$ 183.8	$ 192.9
Ambulatory Services | Commercial and managed care | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	60.00%	61.00%
Ambulatory Services | Self-pay
Revenue, Major Customer [Line Items]
Net fee for service revenue	$ 41.4	$ 34.7
Ambulatory Services | Self-pay | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	13.00%	11.00%
Ambulatory Services | Health Care Organization, Patient Service Revenue | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	98.00%	98.00%
Ambulatory Services | Contract and Other Revenue | Sales revenue, net
Revenue, Major Customer [Line Items]
Percentage of net revenue	2.00%	2.00%

Acquisitions and Disposals - Ph

Acquisitions and Disposals - Physician and Ambulatory Services Activity (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)physician_practicecenter	Mar. 31, 2017USD ($)physician_practicecenter
Surgery center | Ambulatory Services
Business Acquisition [Line Items]
Gain (loss) on disposition of assets | $	$ (1.7)
Discontinued Operations, Disposed of by Sale | Surgery center | Ambulatory Services
Business Acquisition [Line Items]
Number of equity method investments sold | center	3
Number of businesses disposed of | center		0
Series of Individually Immaterial Business Acquisitions | Physician Services
Business Acquisition [Line Items]
Number of business acquisitions | physician_practice	2	3
Cash paid to acquire business | $	$ 70.2	$ 55.4
Series of Individually Immaterial Business Acquisitions | Ambulatory Services
Business Acquisition [Line Items]
Cash paid to acquire business | $		$ 17.7
Series of Individually Immaterial Business Acquisitions | Surgery center | Ambulatory Services
Business Acquisition [Line Items]
Number of business acquisitions | center	0	2

Acquisitions and Disposals - Fa

Acquisitions and Disposals - Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Goodwill	$ 7,570.7	$ 7,536.1
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Accounts receivable	2.3
Goodwill	38.5
Intangible assets	33.8
Other accrued liabilities	(1)
Deferred income taxes	(2.3)
Other long-term liabilities	(1.1)
Acquisition date fair value of total consideration transferred	$ 70.2

Acquisitions and Disposals - Pu

Acquisitions and Disposals - Purchase Price Allocations (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Business Combinations [Abstract]
Goodwill deductible for tax purposes	$ 26	$ 23.4
Transaction and integration costs	$ 21.4	$ 21.5

Discontinued Operations - Sched

Discontinued Operations - Schedule of Revenues From Discontinued Operations (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating expenses:
Gain on assets held for sale	$ 14.7	$ 0
Results of discontinued operations:
Earnings from discontinued operations	3.5	10
Income tax expense of discontinued operations	(126.8)	(488.2)
Net loss from discontinued operations	(123.3)	(478.2)
Discontinued Operations, Disposed of by Sale | Medical Transportation Segment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net revenues	511.7	593.5
Operating expenses:
Salaries and benefits	289	337.9
Supply cost	12	13.9
Insurance expense	22.2	18.7
Other operating expenses	137.8	152.3
Transaction and integration costs	14.8	4.3
Depreciation and amortization	29.4	34.2
Total operating expenses	505.2	561.3
Equity in earnings of unconsolidated affiliates	0.1	0.2
Gain on assets held for sale	14.7	0
Operating income	21.3	32.4
Interest expense, net	17.8	22.4
Earnings before income taxes	3.5	10
Results of discontinued operations:
Earnings from discontinued operations	3.5	10
Income tax expense of discontinued operations	(126.8)	(488.2)
Net loss from discontinued operations	$ (123.3)	$ (478.2)

Discontinued Operations - Narra

Discontinued Operations - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 14, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on assets held for sale	$ 14.7	$ 0
Net cash flows provided by operating activities attributable to discontinued operations	77.4	29
Net cash flows used in investing activities attributable to discontinued operations	23.9	8.7
Medical Transportation Segment | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Value of sale of business			$ 2,280
Gain on assets held for sale	14.7	0
Deferred tax expense and associated deferred tax liability	127.1
Corporate overhead expense, before tax	2.5	14.5
Interest expense, net allocated to discontinued operations	$ 17.6	$ 21.8

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Financial Instruments by Fair Value (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		$ 55.4
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	$ 7.4	8
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	0	0
Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	0	0
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration	7.4	8
U.S. Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		1.8
U.S. Treasuries | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	1.3	1.8
U.S. Treasuries | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	1.3	1.8
U.S. Treasuries | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	0
U.S. Treasuries | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	0
Corporate bonds/Fixed income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		41.2
Corporate bonds/Fixed income | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	83.1	41.2
Corporate bonds/Fixed income | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	60.4	10.4
Corporate bonds/Fixed income | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	22.7	30.8
Corporate bonds/Fixed income | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	0
Corporate equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		12.4
Corporate equity securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	10.5	12.4
Corporate equity securities | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	10.5	12.4
Corporate equity securities | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	0
Corporate equity securities | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	$ 0	$ 0

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Change in Financial Instruments Classified as Level 3 (Details) - Contingent Consideration - Fair Value, Measurements, Recurring $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at December 31, 2017	$ 8
Decrease due to current period payments	(1)
Increase due to current period acquisitions	0.4
Balance at March 31, 2018	$ 7.4

Fair Value Measurements - Sch51

Fair Value Measurements - Schedule Of Insurance Collateral (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities:	$ 84.4
Available-for-sale Securities		$ 55.4
Corporate equity securities	10.5	0
Restricted cash deposits and other	18.6	30.8
Insurance collateral	113.5	86.2
US Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities:	1.3
Available-for-sale Securities		1.8
Corporate bonds/Fixed income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities:	83.1
Available-for-sale Securities		41.2
Corporate equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		12.4
Fair Value, Measurements, Recurring | US Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	1.3	1.8
Fair Value, Measurements, Recurring | Corporate bonds/Fixed income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	83.1	41.2
Fair Value, Measurements, Recurring | Corporate equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities:	0
Available-for-sale Securities	$ 10.5	$ 12.4

Fair Value Measurements - Sch52

Fair Value Measurements - Schedule of Amortized Cost Basis and Aggregate Fair value of Company's Available-for-Sale Securities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, cost basis	$ 84.7
Available-for-sale, gross unrealized gains	0.2
Available-for-sale, gross unrealized losses	(0.5)
Available-for-sale, fair value	84.4
Equity securities, cost basis	9.1
Equity securities, gross unrealized gains	1.4
Equity securities, gross unrealized losses	0
Corporate equity securities	10.5	$ 0
Cost basis	93.8
Gross unrealized gains	1.6
Gross unrealized losses	(0.5)
Fair value	94.9
Cost Basis		53
Gross Unrealized Gains		2.6
Gross Unrealized Losses		(0.2)
Fair value		55.4
US Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, cost basis	1.3
Available-for-sale, gross unrealized gains	0
Available-for-sale, gross unrealized losses	0
Available-for-sale, fair value	1.3
Cost Basis		1.8
Gross Unrealized Gains		0
Gross Unrealized Losses		0
Fair value		1.8
Corporate bonds/Fixed income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale, cost basis	83.4
Available-for-sale, gross unrealized gains	0.2
Available-for-sale, gross unrealized losses	(0.5)
Available-for-sale, fair value	$ 83.1
Cost Basis		40.7
Gross Unrealized Gains		0.7
Gross Unrealized Losses		(0.2)
Fair value		41.2
Corporate equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cost Basis		10.5
Gross Unrealized Gains		1.9
Gross Unrealized Losses		0
Fair value		$ 12.4

Fair Value Measurements - Sch53

Fair Value Measurements - Schedule of Unrealized Loss Positions (Details) - Corporate bonds/Fixed income - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Available-for-sale Securities [Abstract]
Fair Value	$ 43.2	$ 16
Unrealized loss	$ (0.5)	$ (0.2)

Fair Value Measurements - Narra

Fair Value Measurements - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities			$ 55,400,000
Net unrealized loss on equity securities	$ 900,000	$ 0
Available-for-sale, fair value	84,400,000
Available-for-sale securities, other-than-temporarily impaired	0
Proceeds from sale and maturity of available-for-sale securities	15,200,000
Available-for-sale securities, gross realized gain (loss) (less than)	(200,000)
Unrealized holding gain during the period, net of income tax	900,000	900,000
Corporate bonds/Fixed income
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities			41,200,000
Available-for-sale, fair value	83,100,000
Contractual maturities within one year	6,100,000
Contractual maturities extending longer than one year through five years	49,900,000
Debt maturities, rolling year after year five, amortized cost basis	28,400,000
Corporate equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities			$ 12,400,000
Accumulated Other Comprehensive Income (Loss)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized holding gain during the period, net of income tax	$ 900,000	$ 900,000

Prepaid and Other Current Ass55

Prepaid and Other Current Assets (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Income Taxes Receivable	$ 0	$ 74.3
Prepaid expenses	64.7	59.9
Other	33.5	31.4
Total prepaid and other current assets	$ 98.2	$ 165.6

Investments in Unconsolidated56

Investments in Unconsolidated Affiliates (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)equity_method_investmentcenter	Mar. 31, 2017USD ($)center	Dec. 31, 2017USD ($)
Schedule of Equity Method Investments [Line Items]
Investments in unconsolidated affiliates	$ 157.4		$ 156.7
Equity in earnings of unconsolidated affiliates	5.8	$ 4.9
Deconsolidation
Schedule of Equity Method Investments [Line Items]
Net gain (loss) on deconsolidation	$ 0.7	$ 7.4
Joint Venture | Ambulatory Services
Schedule of Equity Method Investments [Line Items]
Number of consolidated entities contributed to joint venture | center	1
Joint Venture | Ambulatory Services | Noncontrolling Interest In Centers
Schedule of Equity Method Investments [Line Items]
Number of separate equity method investments | equity_method_investment	1
Proceeds from divestiture of interest in consolidated subsidiaries	$ 0.2
Surgery center | Ambulatory Services | Discontinued Operations, Disposed of by Sale
Schedule of Equity Method Investments [Line Items]
Number of businesses disposed of | center		0

Goodwill and Intangible Asset57

Goodwill and Intangible Assets - Changes In Carrying Amount Of Goodwill (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 7,536.1
Goodwill acquired, including post acquisition adjustments	38.4
Goodwill disposed, including impact of deconsolidation transactions	(3.8)
Ending balance	7,570.7
Physician Services
Goodwill [Roll Forward]
Beginning balance	5,410.6
Goodwill acquired, including post acquisition adjustments	38.7
Goodwill disposed, including impact of deconsolidation transactions	0
Ending balance	5,449.3
Ambulatory Services
Goodwill [Roll Forward]
Beginning balance	2,125.5
Goodwill acquired, including post acquisition adjustments	(0.3)
Goodwill disposed, including impact of deconsolidation transactions	(3.8)
Ending balance	$ 2,121.4

Goodwill and Intangible Asset58

Goodwill and Intangible Assets - Schedule of Estimated Useful Life and Weighted Average Amortization Period (Details)	3 Months Ended
	Mar. 31, 2018
Segment Reporting Information [Line Items]
Estimated Useful Life	17 years 6 months
Customer relationships
Segment Reporting Information [Line Items]
Weighted Average Amortization Period	17 years 11 months
Customer relationships | Minimum
Segment Reporting Information [Line Items]
Estimated Useful Life	17 years
Customer relationships | Maximum
Segment Reporting Information [Line Items]
Estimated Useful Life	20 years
Capitalized software
Segment Reporting Information [Line Items]
Weighted Average Amortization Period	5 years 4 months 25 days
Capitalized software | Minimum
Segment Reporting Information [Line Items]
Estimated Useful Life	3 years
Capitalized software | Maximum
Segment Reporting Information [Line Items]
Estimated Useful Life	7 years
Agreements, contracts and other
Segment Reporting Information [Line Items]
Weighted Average Amortization Period	3 years
Agreements, contracts and other | Minimum
Segment Reporting Information [Line Items]
Estimated Useful Life	3 years
Agreements, contracts and other | Maximum
Segment Reporting Information [Line Items]
Estimated Useful Life	10 years

Goodwill and Intangible Asset59

Goodwill and Intangible Assets - Summary of Intangible assets (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Indefinite-lived Intangible Assets [Line Items]
Non-amortizable intangible assets	$ 438.4	$ 438.4
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,673.6	3,627.1
Accumulated Amortization	(454.3)	(400)
Net	3,219.3	3,227.1
Total intangible assets, Gross Carrying Amount	4,112	4,065.5
Total intangible assets, Net	3,657.7	3,665.5
Trade names
Indefinite-lived Intangible Assets [Line Items]
Non-amortizable intangible assets	430	430
Restrictive covenant arrangements
Indefinite-lived Intangible Assets [Line Items]
Non-amortizable intangible assets	8.4	8.4
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,480.1	3,446.7
Accumulated Amortization	(365.1)	(321.8)
Net	3,115	3,124.9
Capitalized software
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	179.6	166.9
Accumulated Amortization	(83.6)	(73.3)
Net	96	93.6
Agreements, contracts and other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	13.9	13.5
Accumulated Amortization	(5.6)	(4.9)
Net	$ 8.3	$ 8.6

Goodwill and Intangible Asset60

Goodwill and Intangible Assets - Summary of Intangible Assets (Narrative) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)physician_practicecenter	Mar. 31, 2017USD ($)physician_practicecenter
Goodwill [Line Items]
Goodwill disposed, including impact of deconsolidation transactions	$ 3.8
Amortization of intangible assets	54.7	$ 56.1
Estimated amortization of intangible assets, remainder of 2018	162
Estimated amortization of intangible assets, 2019	206.4
Estimated amortization of intangible assets, 2020	195.8
Estimated amortization of intangible assets, 2021	187.9
Estimated amortization of intangible assets, 2022	179.4
Estimated amortization of intangible assets, 2023	175.5
Estimated amortization of intangible assets, 2024 and thereafter	$ 2,110
Estimated Useful Life	17 years 6 months
Physician Services
Goodwill [Line Items]
Goodwill disposed, including impact of deconsolidation transactions	$ 0
Physician Services | Series of Individually Immaterial Business Acquisitions
Goodwill [Line Items]
Number of business acquisitions | physician_practice	2	3
Ambulatory Services
Goodwill [Line Items]
Goodwill disposed, including impact of deconsolidation transactions	$ 3.8
Ambulatory Services | Surgery center | Series of Individually Immaterial Business Acquisitions
Goodwill [Line Items]
Number of business acquisitions | center	0	2

Other Accrued Liabilities (Deta

Other Accrued Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Accrued Liabilities, Current [Abstract]
Insurance reserves	$ 80	$ 77.1
Refunds payable	26.3	28.9
Deferred revenue	16.5	18.9
Income taxes payable	241.8	0
Other	184.5	156.7
Total other accrued liabilities	$ 549.1	$ 281.6

Long-term Debt - Components Of

Long-term Debt - Components Of Long-Term Debt (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Other debt due through 2025	$ 26.6	$ 24.1
Capitalized lease arrangements due through 2031	31.3	32.3
Long-term debt and capitalized lease arrangements	4,714.2	6,412.7
Less current portion	12.7	52.1
Less net deferred financing costs	93	97.3
Long-term debt, net of deferred financing costs of $93.0 and $97.3, respectively	4,608.5	6,263.3
ABL Facility
Debt Instrument [Line Items]
Long-term debt, gross	0	0
Term Loan B - 2023 | Term loan
Debt Instrument [Line Items]
Long-term debt, gross	$ 2,256.3	3,956.3
Senior Unsecured Notes due 2022 (5.625%) | Senior notes
Debt Instrument [Line Items]
Interest rate	5.625%
Long-term debt, gross	$ 1,100	1,100
Senior Unsecured Notes due 2022 (5.125%) | Senior notes
Debt Instrument [Line Items]
Interest rate	5.125%
Long-term debt, gross	$ 750	750
Senior Unsecured Notes due 2024 (6.250%) | Senior notes
Debt Instrument [Line Items]
Interest rate	6.25%
Long-term debt, gross	$ 550	$ 550

Long-term Debt - Narrative (Det

Long-term Debt - Narrative (Details) $ in Millions	1 Months Ended	3 Months Ended
	Mar. 31, 2018USD ($)	Mar. 31, 2018USD ($)
Fixed Interest Rate
Schedule of Capitalization, Long-term Debt [Line Items]
Carrying value	$ 2,460	$ 2,460
Long-term debt, fair value	2,470	2,470
Variable Interest Rate
Schedule of Capitalization, Long-term Debt [Line Items]
Long-term debt, fair value	2,260	2,260
Term loan | Term Loan B - 2023
Schedule of Capitalization, Long-term Debt [Line Items]
Repayments of debt	$ 1,820
Principal payment		$ 40

Insurance Reserves - Narrative

Insurance Reserves - Narrative (Details)	Mar. 31, 2018USD ($)
Minimum
Loss Contingencies [Line Items]
Amount of loss at which third party insurance becomes effective	$ 1,000,000
Maximum
Loss Contingencies [Line Items]
Amount of loss at which third party insurance becomes effective	$ 3,000,000

Insurance Reserves - Components

Insurance Reserves - Components of Reserves (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Payables and Accruals [Abstract]
Third-party insurance reserves	$ 110.4	$ 111.3
Estimated losses under self-insured programs	148.1	170.3
Incurred but not reported losses	145	114
Total accrued insurance reserves	403.5	395.6
Less estimated losses payable within one year	80	77.1
Total	$ 323.5	$ 318.5

Insurance Reserves - Rollforwar

Insurance Reserves - Rollforward of Reserves (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Payables and Accruals [Abstract]
Insurance expense	$ 47.6	$ 37.6
Self Insurance Reserve [Roll Forward]
Balance at December 31, 2017	395.6
Assumed liabilities through acquisitions	0.5
Provision related to current period self-insurance reserves	20.4
Benefit related to changes in prior period self-insurance reserves	9
Payments for prior period self-insurance reserves	(20.2)
Change in third-party insurance self-insurance reserves	1.7
Other, net including post-acquisition adjustments	(3.5)
Balance at March 31, 2018	$ 403.5

Stockholders' Equity - Narrativ

Stockholders' Equity - Narrative (Details)	3 Months Ended
	Mar. 31, 2018USD ($)installment$ / sharesshares	Mar. 31, 2017USD ($)shares	Sep. 17, 2017USD ($)	Dec. 01, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for grant under share incentive plan (in shares)	3,200,000
Shares available for future grants/issuance under stock incentive plan (in shares)	977,999
Compensation cost not yet recognized | $	$ 49,800,000
Compensation cost not yet recognized, period for recognition	1 year
Authorized amount of share repurchase | $			$ 250,000,000
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option term	10 years
Restricted Stock | Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of installments in restricted stock granted | installment	3
Omnibus Incentive Plan 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for grant under share incentive plan (in shares)	5,580,568
Shares available for future grants/issuance under stock incentive plan (in shares)	3,720,175
Market-based Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding (in shares)	191,223
Market-based Performance Shares | Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period	3 years
Market-based Performance Shares | 2017 LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted (in shares)	70,615
Shares granted, weighted average grant date fair value (in dollars per share) | $ / shares	$ 40
Shares vested (in shares)	26,249
Shares forfeited (in shares)	48,898
Performance Shares | 2017 LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Shares granted (in shares)	453,938
Shares vested (in shares)	18,749
Shares forfeited (in shares)	66,565
Shares outstanding (in shares)	678,775
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award requisite service period	1 year
Minimum | Restricted Stock | Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Minimum | Omnibus Incentive Plan 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	1 year
Minimum | Market-based Performance Shares | 2017 LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target performance, percent	0.00%
Maximum | Restricted Stock | Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Maximum | Omnibus Incentive Plan 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Maximum | Market-based Performance Shares | 2017 LTIP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Target performance, percent	150.00%
Stock Repurchased To Cover Employee Tax Withholdings
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchased, approximately (in shares)	94,084	128,186
Stock repurchased | $	$ 3,300,000	$ 8,800,000
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	370,416	66,463
Merger With Envision Healthcare Holdings, Inc
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares to be issued for one share of acquiree's stock				0.334

Stockholders' Equity - Schedule

Stockholders' Equity - Schedule Of Changes In Non-Vested Restricted Shares (Details) - Restricted Stock Units	3 Months Ended
	Mar. 31, 2018$ / sharesshares
Number of Shares
Non-vested awards at December 31, 2017 (in shares) | shares	1,410,461
Shares granted (in shares) | shares	682,119
Shares vested (in shares) | shares	(512,103)
Shares forfeited (in shares) | shares	(104,924)
Non-vested awards at March 31, 2018 (in shares) | shares	1,475,553
Weighted Average Grant Price
Non-vested awards at December 31, 2017 (in dollars per share) | $ / shares	$ 65.52
Shares granted (in dollars per share) | $ / shares	40.01
Shares vested (in dollars per share) | $ / shares	63.43
Shares forfeited (in dollars per share) | $ / shares	63.87
Non-vested awards at March 31, 2018 (in dollars per share) | $ / shares	$ 54.57

Stockholders' Equity - Schedu69

Stockholders' Equity - Schedule Of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Number of Shares
Outstanding at December 31, 2017 (in shares)	2,826,021
Options exercised (in shares)	(38,611)
Options canceled (in shares)	(46,952)
Outstanding at March 31, 2018 (in shares)	2,740,458	2,826,021
Vested and Exercisable at March 31, 2018 (in shares)	2,666,440
Weighted Average Exercise Price
Outstanding at December 31, 2017 (in dollars per share)	$ 19.70
Options exercised (in dollars per share)	11.13
Options canceled (in dollars per share)	66.88
Outstanding at March 31, 2018 (in dollars per share)	19.01	$ 19.70
Vested and Exercisable at March 31, 2018 (in dollars per share)	$ 17.70
Weighted Average Remaining Contractual Term
Weighted Average Remaining Contractual Term, Outstanding	2 years 9 months 21 days	4 years 3 months 20 days
Vested and Exercisable at March 31, 2018	2 years 8 months 15 days
Options exercised in period intrinsic value	$ 1
Options outstanding intrinsic value	64.7
Options vested and exercisable, aggregate intrinsic value	$ 64.7

Stockholders' Equity - Share-Ba

Stockholders' Equity - Share-Based Activity (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Equity [Abstract]
Share-based compensation expense from continuing operations	$ 7.4	$ 14.6
Fair value of shares vested	18.7	28.4
Cash received from option exercises	0.3	1.1
Tax expense (benefit) from exercises of share based awards	$ 4.6	$ (2.9)

Stockholders' Equity - Earnings

Stockholders' Equity - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Equity [Abstract]
Net earnings from continuing operations attributable to Envision Healthcare Corporation common stockholders (basic)	$ 36.9	$ 30.7
Effect of dilutive securities, options and non-vested shares	0	0
Net earnings from continuing operations attributable to Envision Healthcare Corporation common stockholders (diluted)	$ 36.9	$ 30.7
Net earnings from continuing operations attributable to Envision Healthcare Corporation common stockholders (basic) (in shares)	120,552	116,563
Effect of dilutive securities, options and non-vested shares (in shares)	1,802	2,912
Net earnings from continuing operations attributable to Envision Healthcare Corporation common stockholders (diluted) (in shares)	122,354	119,475
Net earnings from continuing operations attributable to Envision Healthcare Corporation common stockholders (basic) (in dollars per share)	$ 0.31	$ 0.26
Net earnings from continuing operations attributable to Envision Healthcare Corporation common stockholders (diluted) (in dollars per share)	$ 0.30	$ 0.26

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
Income Tax Contingency [Line Items]
Provisional income tax expense (benefit) from the Act	$ 10.3		$ 596.6
Forecast
Income Tax Contingency [Line Items]
Effective income tax rate		26.00%

Segment Reporting (Details)

Segment Reporting (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)segment	Mar. 31, 2017USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment	2
Number of operating segments | segment	2
Net revenue	$ 2,077	$ 1,878.6
Adjusted EBITDA	207.6	210.3
Net earnings attributable to noncontrolling interests	51.2	54.1
Interest expense, net	(63.6)	(52.4)
Depreciation and amortization	(70.6)	(71.3)
Share-based compensation	(7.4)	(14.6)
Transaction and integration costs	(21.4)	(21.5)
Impairment charges	(0.7)	(0.3)
Net gain (loss) on disposals and deconsolidations, net of noncontrolling interests	(0.6)	0.3
Net unrealized loss on equity securities	(0.9)	0
Earnings from continuing operations before income taxes	93.6	104.6
Acquisition and Capital Expenditures	92.6	93.8
Physician Services
Segment Reporting Information [Line Items]
Net revenue	1,769.4	1,562.7
Adjusted EBITDA	150.1	150.1
Acquisition and Capital Expenditures	85.2	66
Ambulatory Services
Segment Reporting Information [Line Items]
Net revenue	307.6	315.9
Adjusted EBITDA	57.5	60.2
Acquisition and Capital Expenditures	$ 7.4	$ 27.8

Financial Information for the74

Financial Information for the Company and Its Subsidiaries - Balance Sheet (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 767.4	$ 312.2
Insurance collateral	113.5	86.2
Accounts receivable, net	1,532.8	1,405.8
Supplies inventory	22.1	22.7
Prepaid and other current assets	98.2	165.6
Current assets held for sale	0	2,751.8
Total current assets	2,534	4,744.3
Property and equipment, net	284	302.7
Investments in and advances to affiliates	157.4	156.7
Intercompany receivable	0	0
Goodwill	7,570.7	7,536.1
Intangible assets, net	3,657.7	3,665.5
Other assets	180.7	167.3
Total assets	14,384.5	16,572.6
Current liabilities:
Current portion of long-term debt	12.7	52.1
Accounts payable	50.4	62.2
Accrued salaries and benefits	471	548
Accrued interest	35.1	52.1
Other accrued liabilities	549.1	281.6
Current liabilities held for sale	0	399.1
Total current liabilities	1,118.3	1,395.1
Long-term debt	4,608.5	6,263.3
Deferred income taxes	902.8	1,089.3
Insurance reserves	323.5	318.5
Other long-term liabilities	155.6	149.9
Intercompany payable	0	0
Noncontrolling interests – redeemable	186.3	187.1
Equity:
Total Envision Healthcare Corporation equity	6,451.5	6,527.1
Noncontrolling interests – non-redeemable	638	642.3
Total equity	7,089.5	7,169.4
Total liabilities and equity	14,384.5	16,572.6
Consolidating Adjustments
Current assets:
Cash and cash equivalents	0	0
Insurance collateral	0	0
Accounts receivable, net	0	0
Supplies inventory	0	0
Prepaid and other current assets	(0.1)	(0.4)
Current assets held for sale		0
Total current assets	(0.1)	(0.4)
Property and equipment, net	0	0
Investments in and advances to affiliates	(9,317.3)	(12,529.1)
Intercompany receivable	(2,991.1)	(3,152.6)
Goodwill	5,864.8	5,992.8
Intangible assets, net	0	0
Other assets	0	0
Total assets	(6,443.7)	(9,689.3)
Current liabilities:
Current portion of long-term debt	0	0
Accounts payable	0	0
Accrued salaries and benefits	0	0
Accrued interest	0	0
Other accrued liabilities	(0.1)	(0.4)
Current liabilities held for sale		0
Total current liabilities	(0.1)	(0.4)
Long-term debt	0	0
Deferred income taxes	0	0
Insurance reserves	0	0
Other long-term liabilities	0	0
Intercompany payable	(2,991.1)	(3,152.6)
Noncontrolling interests – redeemable	112.2	111.8
Equity:
Total Envision Healthcare Corporation equity	(4,102)	(7,141.5)
Noncontrolling interests – non-redeemable	537.3	493.4
Total equity	(3,564.7)	(6,648.1)
Total liabilities and equity	(6,443.7)	(9,689.3)
Parent Issuer | Reportable Legal Entities
Current assets:
Cash and cash equivalents	502.3	110
Insurance collateral	0	0
Accounts receivable, net	0	0
Supplies inventory	0	0
Prepaid and other current assets	19.6	7.5
Current assets held for sale		0
Total current assets	521.9	117.5
Property and equipment, net	20.3	10.8
Investments in and advances to affiliates	8,545	10,713.9
Intercompany receivable	2,991.1	2,924.9
Goodwill	0	0
Intangible assets, net	29.4	12.9
Other assets	66.1	50
Total assets	12,173.8	13,830
Current liabilities:
Current portion of long-term debt	0	40
Accounts payable	15.5	2
Accrued salaries and benefits	8.6	5.5
Accrued interest	35	52.1
Other accrued liabilities	324.7	3.1
Current liabilities held for sale		0
Total current liabilities	383.8	102.7
Long-term debt	4,563.3	6,218.7
Deferred income taxes	721.8	940
Insurance reserves	6.2	6
Other long-term liabilities	47.2	35.5
Intercompany payable	0	0
Noncontrolling interests – redeemable	0	0
Equity:
Total Envision Healthcare Corporation equity	6,451.5	6,527.1
Noncontrolling interests – non-redeemable	0	0
Total equity	6,451.5	6,527.1
Total liabilities and equity	12,173.8	13,830
Guarantor Subsidiaries | Reportable Legal Entities
Current assets:
Cash and cash equivalents	57.6	10.2
Insurance collateral	0	0
Accounts receivable, net	361.5	275.1
Supplies inventory	0	0
Prepaid and other current assets	5.4	75.8
Current assets held for sale		2,751.8
Total current assets	424.5	3,112.9
Property and equipment, net	80.4	103.2
Investments in and advances to affiliates	929.7	1,971.9
Intercompany receivable	0	227.7
Goodwill	1,705.9	1,543.3
Intangible assets, net	1,123.6	1,256.1
Other assets	42.6	43.6
Total assets	4,306.7	8,258.7
Current liabilities:
Current portion of long-term debt	0.1	0.1
Accounts payable	11.4	23.1
Accrued salaries and benefits	73.4	218.1
Accrued interest	0	0
Other accrued liabilities	162.5	162.5
Current liabilities held for sale		399.1
Total current liabilities	247.4	802.9
Long-term debt	0.2	0.3
Deferred income taxes	0	0
Insurance reserves	89.8	106.3
Other long-term liabilities	74	78.5
Intercompany payable	2,553.9	2,673.6
Noncontrolling interests – redeemable	0	0
Equity:
Total Envision Healthcare Corporation equity	1,341.4	4,597.1
Noncontrolling interests – non-redeemable	0	0
Total equity	1,341.4	4,597.1
Total liabilities and equity	4,306.7	8,258.7
Non-Guarantor Subsidiaries | Reportable Legal Entities
Current assets:
Cash and cash equivalents	207.5	192
Insurance collateral	113.5	86.2
Accounts receivable, net	1,171.3	1,130.7
Supplies inventory	22.1	22.7
Prepaid and other current assets	73.3	82.7
Current assets held for sale		0
Total current assets	1,587.7	1,514.3
Property and equipment, net	183.3	188.7
Investments in and advances to affiliates	0	0
Intercompany receivable	0	0
Goodwill	0	0
Intangible assets, net	2,504.7	2,396.5
Other assets	72	73.7
Total assets	4,347.7	4,173.2
Current liabilities:
Current portion of long-term debt	12.6	12
Accounts payable	23.5	37.1
Accrued salaries and benefits	389	324.4
Accrued interest	0.1	0
Other accrued liabilities	62	116.4
Current liabilities held for sale		0
Total current liabilities	487.2	489.9
Long-term debt	45	44.3
Deferred income taxes	181	149.3
Insurance reserves	227.5	206.2
Other long-term liabilities	34.4	35.9
Intercompany payable	437.2	479
Noncontrolling interests – redeemable	74.1	75.3
Equity:
Total Envision Healthcare Corporation equity	2,760.6	2,544.4
Noncontrolling interests – non-redeemable	100.7	148.9
Total equity	2,861.3	2,693.3
Total liabilities and equity	$ 4,347.7	$ 4,173.2

Financial Information for the75

Financial Information for the Company and Its Subsidiaries - Statement of Operations (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Condensed Financial Statements, Captions [Line Items]
Net revenue	$ 2,077	$ 1,878.6
Operating expenses:
Salaries and benefits	1,538.9	1,359
Supply cost	54.4	54.1
Insurance expense	47.6	37.6
Other operating expenses	190.8	184.1
Transaction and integration costs	21.4	21.5
Impairment charges	0.7	0.3
Depreciation and amortization	70.6	71.3
Total operating expenses	1,924.4	1,727.9
Net gain (loss) on disposals and deconsolidations	(1)	0.3
Equity in earnings (loss) of unconsolidated affiliates	5.8	4.9
Operating income	157.4	155.9
Interest expense, net	63.6	52.4
Other income (expense), net	(0.2)	1.1
Earnings from continuing operations before income taxes	93.6	104.6
Income tax expense	5.5	17.5
Net earnings from continuing operations	88.1	87.1
Net loss from discontinued operations	(123.3)	(478.2)
Net loss	(35.2)	(391.1)
Less net earnings attributable to noncontrolling interests	51.2	54.1
Net loss attributable to Envision Healthcare Corporation stockholders	(86.4)	(445.2)
Preferred stock dividends	0	(2.3)
Net earnings (loss) attributable to Envision Healthcare Corporation common stockholders	(86.4)	(447.5)
Comprehensive income (loss) attributable to Envision Healthcare Corporation	(85.5)	(444.3)
Consolidating Adjustments
Condensed Financial Statements, Captions [Line Items]
Net revenue	(43.7)	(38.4)
Operating expenses:
Salaries and benefits	(0.2)	(0.2)
Supply cost	0	0
Insurance expense	(38)	(23.2)
Other operating expenses	(5.5)	(15)
Transaction and integration costs	0	0
Impairment charges	0	0
Depreciation and amortization	0	0
Total operating expenses	(43.7)	(38.4)
Net gain (loss) on disposals and deconsolidations	0	0
Equity in earnings (loss) of unconsolidated affiliates	(86.7)	240.5
Operating income	(86.7)	240.5
Interest expense, net	0	0
Other income (expense), net	0
Earnings from continuing operations before income taxes	(86.7)	240.5
Income tax expense	0	0
Net earnings from continuing operations	(86.7)	240.5
Net loss from discontinued operations	0	0
Net loss	(86.7)	240.5
Less net earnings attributable to noncontrolling interests	0	0
Net loss attributable to Envision Healthcare Corporation stockholders		240.5
Preferred stock dividends		0
Net earnings (loss) attributable to Envision Healthcare Corporation common stockholders	(86.7)	240.5
Comprehensive income (loss) attributable to Envision Healthcare Corporation	(86.7)	240.5
Parent Issuer | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net revenue	7.3	8.2
Operating expenses:
Salaries and benefits	16.6	22.7
Supply cost	0	0
Insurance expense	0	0.5
Other operating expenses	7.6	6.7
Transaction and integration costs	3.3	2.3
Impairment charges	0	0
Depreciation and amortization	1.6	1.5
Total operating expenses	29.1	33.7
Net gain (loss) on disposals and deconsolidations	0	0
Equity in earnings (loss) of unconsolidated affiliates	(54.6)	(399.3)
Operating income	(76.4)	(424.8)
Interest expense, net	7.1	9
Other income (expense), net	(0.5)	1
Earnings from continuing operations before income taxes	(84)	(432.8)
Income tax expense	2.4	12.4
Net earnings from continuing operations	(86.4)	(445.2)
Net loss from discontinued operations	0	0
Net loss	(86.4)	(445.2)
Less net earnings attributable to noncontrolling interests	0	0
Net loss attributable to Envision Healthcare Corporation stockholders		(445.2)
Preferred stock dividends		(2.3)
Net earnings (loss) attributable to Envision Healthcare Corporation common stockholders	(86.4)	(447.5)
Comprehensive income (loss) attributable to Envision Healthcare Corporation	(86.4)	(445.2)
Guarantor Subsidiaries | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net revenue	590.3	440.1
Operating expenses:
Salaries and benefits	531.7	403.9
Supply cost	5.2	1.2
Insurance expense	11.7	9.8
Other operating expenses	5.3	35.4
Transaction and integration costs	18	18.7
Impairment charges	0.7	0.3
Depreciation and amortization	52	54.3
Total operating expenses	624.6	523.6
Net gain (loss) on disposals and deconsolidations	0.2	1.8
Equity in earnings (loss) of unconsolidated affiliates	147.1	163.7
Operating income	113	82
Interest expense, net	40.8	33
Other income (expense), net	0.3	0
Earnings from continuing operations before income taxes	72.5	49
Income tax expense	3.8	(29.9)
Net earnings from continuing operations	68.7	78.9
Net loss from discontinued operations	(123.3)	(478.2)
Net loss	(54.6)	(399.3)
Less net earnings attributable to noncontrolling interests	0	0
Net loss attributable to Envision Healthcare Corporation stockholders		(399.3)
Preferred stock dividends		0
Net earnings (loss) attributable to Envision Healthcare Corporation common stockholders	(54.6)	(399.3)
Comprehensive income (loss) attributable to Envision Healthcare Corporation	(54.6)	(399.3)
Non-Guarantor Subsidiaries | Reportable Legal Entities
Condensed Financial Statements, Captions [Line Items]
Net revenue	1,523.1	1,468.7
Operating expenses:
Salaries and benefits	990.8	932.6
Supply cost	49.2	52.9
Insurance expense	73.9	50.5
Other operating expenses	183.4	157
Transaction and integration costs	0.1	0.5
Impairment charges	0	0
Depreciation and amortization	17	15.5
Total operating expenses	1,314.4	1,209
Net gain (loss) on disposals and deconsolidations	(1.2)	(1.5)
Equity in earnings (loss) of unconsolidated affiliates	0	0
Operating income	207.5	258.2
Interest expense, net	15.7	10.4
Other income (expense), net	0	0.1
Earnings from continuing operations before income taxes	191.8	247.9
Income tax expense	(0.7)	35
Net earnings from continuing operations	192.5	212.9
Net loss from discontinued operations	0	0
Net loss	192.5	212.9
Less net earnings attributable to noncontrolling interests	51.2	54.1
Net loss attributable to Envision Healthcare Corporation stockholders		158.8
Preferred stock dividends		0
Net earnings (loss) attributable to Envision Healthcare Corporation common stockholders	141.3	158.8
Comprehensive income (loss) attributable to Envision Healthcare Corporation	$ 142.2	$ 159.7

Financial Information for the76

Financial Information for the Company and Its Subsidiaries - Cash Flows (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net cash flows provided by (used in) operating activities	$ 37.3	$ 98.1
Cash flows from investing activities:
Acquisitions and related expenses	(71.6)	(73.1)
Acquisition of property and equipment	(45.3)	(40.7)
Net proceeds from sale of medical transportation business	2,279.7	0
Purchases of marketable securities	(57.3)	(3.4)
Maturities of marketable securities	17.2	0.5
Other, net	1.1	17.3
Net cash flows provided by (used in) investing activities	2,123.8	(99.4)
Cash flows from financing activities:
Proceeds from long-term borrowings	125.5	3.7
Repayment on long-term borrowings	(1,824.2)	(11.9)
Distributions to owners, including noncontrolling interests	(53.1)	(60.5)
Capital contributions	0
Changes in intercompany balances with affiliates, net	0	0
Other, net	(6.3)	(8.4)
Net cash flows used in financing activities	(1,758.1)	(77.1)
Net increase (decrease) in cash, cash equivalents, and restricted cash	403	(78.4)
Cash, cash equivalents, restricted cash and restricted cash equivalents, beginning of period			$ 383	$ 360.4
Less cash, cash equivalents, restricted cash and restricted cash equivalents of held for sale assets, end of period	0	17.7
Cash, cash equivalents, restricted cash and restricted cash equivalents, end of period	786	264.3	383
Consolidating Adjustments
Cash flows from operating activities:
Net cash flows provided by (used in) operating activities	(138.4)	(147.4)
Cash flows from investing activities:
Acquisitions and related expenses	66.1	0.2
Acquisition of property and equipment	0	0
Net proceeds from sale of medical transportation business	0
Purchases of marketable securities	0	0
Maturities of marketable securities	0	0
Other, net	0	0
Net cash flows provided by (used in) investing activities	66.1	0.2
Cash flows from financing activities:
Proceeds from long-term borrowings	0	0
Repayment on long-term borrowings	0	0
Distributions to owners, including noncontrolling interests	138.4	147.4
Capital contributions	(66.1)
Changes in intercompany balances with affiliates, net	0	0
Other, net	0	(0.2)
Net cash flows used in financing activities	72.3	147.2
Net increase (decrease) in cash, cash equivalents, and restricted cash	0	0
Cash, cash equivalents, restricted cash and restricted cash equivalents, beginning of period				0
Less cash, cash equivalents, restricted cash and restricted cash equivalents of held for sale assets, end of period		0
Cash, cash equivalents, restricted cash and restricted cash equivalents, end of period	0	0	0
Parent Issuer | Reportable Legal Entities
Cash flows from operating activities:
Net cash flows provided by (used in) operating activities	26.4	26.8
Cash flows from investing activities:
Acquisitions and related expenses	(66.1)	0
Acquisition of property and equipment	(0.5)	(0.2)
Net proceeds from sale of medical transportation business	2,279.7
Purchases of marketable securities	0	0
Maturities of marketable securities	0	0
Other, net	0	0
Net cash flows provided by (used in) investing activities	2,213.1	(0.2)
Cash flows from financing activities:
Proceeds from long-term borrowings	120	0
Repayment on long-term borrowings	(1,820)	(8.7)
Distributions to owners, including noncontrolling interests	0	0
Capital contributions	0
Changes in intercompany balances with affiliates, net	(143.7)	1.8
Other, net	(3.5)	(9.2)
Net cash flows used in financing activities	(1,847.2)	(16.1)
Net increase (decrease) in cash, cash equivalents, and restricted cash	392.3	10.5
Cash, cash equivalents, restricted cash and restricted cash equivalents, beginning of period				41.6
Less cash, cash equivalents, restricted cash and restricted cash equivalents of held for sale assets, end of period		0
Cash, cash equivalents, restricted cash and restricted cash equivalents, end of period	502.3	52.1	110
Guarantor Subsidiaries | Reportable Legal Entities
Cash flows from operating activities:
Net cash flows provided by (used in) operating activities	(96.2)	123.2
Cash flows from investing activities:
Acquisitions and related expenses	(71.6)	(73.3)
Acquisition of property and equipment	(37.2)	(27.7)
Net proceeds from sale of medical transportation business	0
Purchases of marketable securities	0	0
Maturities of marketable securities	0	0
Other, net	2.6	11.7
Net cash flows provided by (used in) investing activities	(106.2)	(89.3)
Cash flows from financing activities:
Proceeds from long-term borrowings	0.3	0
Repayment on long-term borrowings	(0.8)	(0.3)
Distributions to owners, including noncontrolling interests	(69.2)	(77.3)
Capital contributions	66.1
Changes in intercompany balances with affiliates, net	213.4	19
Other, net	0	(2.3)
Net cash flows used in financing activities	209.8	(60.9)
Net increase (decrease) in cash, cash equivalents, and restricted cash	7.4	(27)
Cash, cash equivalents, restricted cash and restricted cash equivalents, beginning of period				59.7
Less cash, cash equivalents, restricted cash and restricted cash equivalents of held for sale assets, end of period		17.7
Cash, cash equivalents, restricted cash and restricted cash equivalents, end of period	57.6	15	50.2
Non-Guarantor Subsidiaries | Reportable Legal Entities
Cash flows from operating activities:
Net cash flows provided by (used in) operating activities	245.5	95.5
Cash flows from investing activities:
Acquisitions and related expenses	0	0
Acquisition of property and equipment	(7.6)	(12.8)
Net proceeds from sale of medical transportation business	0
Purchases of marketable securities	(57.3)	(3.4)
Maturities of marketable securities	17.2	0.5
Other, net	(1.5)	5.6
Net cash flows provided by (used in) investing activities	(49.2)	(10.1)
Cash flows from financing activities:
Proceeds from long-term borrowings	5.2	3.7
Repayment on long-term borrowings	(3.4)	(2.9)
Distributions to owners, including noncontrolling interests	(122.3)	(130.6)
Capital contributions	0
Changes in intercompany balances with affiliates, net	(69.7)	(20.8)
Other, net	(2.8)	3.3
Net cash flows used in financing activities	(193)	(147.3)
Net increase (decrease) in cash, cash equivalents, and restricted cash	3.3	(61.9)
Cash, cash equivalents, restricted cash and restricted cash equivalents, beginning of period				$ 259.1
Less cash, cash equivalents, restricted cash and restricted cash equivalents of held for sale assets, end of period		0
Cash, cash equivalents, restricted cash and restricted cash equivalents, end of period	$ 226.1	$ 197.2	$ 222.8