During the six-month period ended June 30, 2020, we acquired substantially all of the net assets of the following firms in exchange for our common stock and/or cash. These acquisitions have been accounted for using the acquisition method for recording business combinations (in millions, except share data):

													Total		Maximum
	Common		Common								Recorded		Recorded		Potential
Name and Effective	Shares		Share				Accrued		Escrow		Earnout		Purchase		Earnout
Date of Acquisition	Issued		Value		Cash Paid		Liability		Deposited		Payable		Price		Payable
	(000s)
Capsicum Reinsurance Brokers LLP
January 1, 2020 (CRB)		584	$	62.9	$	64.5	$	—	$	—	$	119.0	$	246.4	$	209.1
Hanover Excess & Surplus, Inc and Hanover 'Finance, Inc (HES)
January 1, 2020		—		—		30.1		—		3.0		0.2		33.3		9.3
CRES Insurance Services, LLC
June 1, 2020 (CRES)		288		28.5		1.5		—		1.0		5.3		36.3		7.3
Nine other acquisitions completed in 2020		89		6.7		51.9		1.8		5.0		18.4		83.8		35.4
		961	$	98.1	$	148.0	$	1.8	$	9.0	$	142.9	$	399.8	$	261.1

Common shares issued in connection with acquisitions are valued at closing market prices as of the effective date of the applicable acquisition or on the days when the shares are issued, if purchase consideration is deferred. We record escrow deposits that are returned to us as a result of adjustments to net assets acquired as reductions of goodwill when the escrows are settled. The maximum potential earnout payables disclosed in the foregoing table represent the maximum amount of additional consideration that could be paid pursuant to the terms of the purchase agreement for the applicable acquisition. The amounts recorded as earnout payables, which are primarily based upon the estimated future operating results of the acquired entities over a two- to three-year period subsequent to the acquisition date, are measured at fair value as of the acquisition date and are included on that basis in the recorded purchase price consideration in the foregoing table. We will record subsequent changes in these estimated earnout obligations, including the accretion of discount, in our consolidated statement of earnings when incurred.

The fair value of these earnout obligations is based on the present value of the expected future payments to be made to the sellers of the acquired entities in accordance with the provisions outlined in the respective purchase agreements, which is a Level 3 fair value measurement. In determining fair value, we estimated the acquired entity’s future performance using financial projections developed by management for the acquired entity and market participant assumptions that were derived for revenue growth and/or profitability. Revenue growth rates generally ranged from 2.5% to 13.8% for our 2020 acquisitions. We estimated future payments using the earnout formula and performance targets specified in each purchase agreement and the financial projections just described. We then discounted these payments to present value using a risk-adjusted rate that takes into consideration market-based rates of return that reflect the ability of the acquired entity to achieve the targets. The discount rates generally were 9.0% for all of our 2020 acquisitions.

Changes in financial projections, market participant assumptions for revenue growth and/or profitability, or the risk-adjusted discount rate, would result in a change in the fair value of recorded earnout obligations.

During the three-month periods ended June 30, 2020 and 2019, we recognized $7.7 million and $5.8 million, respectively, of expense in our consolidated statement of earnings related to the accretion of the discount recorded for earnout obligations in connection with our acquisitions. During the six-month periods ended June 30, 2020 and 2019, we recognized $18.4 million and $11.4 million, respectively, of expense in our consolidated statement of earnings related to the accretion of the discount recorded for earnout obligations in connection with our acquisitions. In addition, during the three-month periods ended June 30, 2020 and 2019, we recognized $8.0 million of expense and $2.4 million of income, respectively, related to net adjustments in the estimated fair value of the liability for earnout obligations in connection with revised projections of future performance for 44 and 46 acquisitions, respectively. In addition, during the six-month periods ended June 30, 2020 and 2019, we recognized $91.6 million and $5.1 million of income, respectively, related to net adjustments in the estimated fair value of the liability for earnout obligations in connection with revised projections of future performance for 102 and 68 acquisitions, respectively. The aggregate amount of maximum earnout obligations related to acquisitions was $1,060.7 million as of June 30, 2020, of which $474.0 million was recorded in the consolidated balance sheet as of June 30, 2020, based on the estimated fair value of the expected future payments to be made.

The following is a summary of the estimated fair values of the net assets acquired at the date of each acquisition made in the six‑month period ended June 30, 2020 (in millions):

							Nine Other
	CRB		HES		CRES		Acquisitions		Total
Cash	$	—	$	0.3	$	1.5	$	2.4	$	4.2
Other current assets		—		4.0		15.2		21.7		40.9
Fixed assets		—		—		—		0.4		0.4
Noncurrent assets		7.6		0.8		—		2.0		10.4
Goodwill		119.0		13.1		24.6		33.8		190.5
Expiration lists		103.3		19.5		9.3		46.3		178.4
Non-compete agreements		3.3		0.5		0.4		0.4		4.6
Trade names		13.2		—		1.0		—		14.2
Total assets acquired		246.4		38.2		52.0		107.0		443.6
Current liabilities		—		4.4		15.7		19.6		39.7
Noncurrent liabilities		—		0.5		—		3.6		4.1
Total liabilities assumed		—		4.9		15.7		23.2		43.8
Total net assets acquired	$	246.4	$	33.3	$	36.3	$	83.8	$	399.8

Among other things, these acquisitions allow us to expand into desirable geographic locations, further extend our presence in the retail and wholesale insurance and reinsurance brokerage services markets and increase the volume of general services currently provided. The excess of the purchase price over the estimated fair value of the tangible net assets acquired at the acquisition date was allocated to goodwill, expiration lists, non-compete agreements and trade names in the amounts of $190.5 million, $178.4 million, $4.6 million and $14.2 million, respectively, within the brokerage and risk management segment.

Provisional estimates of fair value are established at the time of each acquisition and are subsequently reviewed within the first year of operations subsequent to the acquisition date to determine the necessity for adjustments. The fair value of the tangible assets and liabilities for each applicable acquisition at the acquisition date approximated their carrying values. The fair value of expiration lists was established using the excess earnings method, which is an income approach based on estimated financial projections developed by management for each acquired entity using market participant assumptions. Revenue growth and attrition rates generally ranged from 1.5% to 3.2% and 5.0% to 15.7%, respectively, for our 2019 acquisitions for which valuations were performed in 2020. We estimate the fair value as the present value of the benefits anticipated from ownership of the subject expiration list in excess of returns required on the investment in contributory assets necessary to realize those benefits. The rate used to discount the net benefits was based on a risk-adjusted rate that takes into consideration market-based rates of return and reflects the risk of the asset relative to the acquired business. These discount rates generally ranged from 9.0% to 12.5% for our 2019 acquisitions for which valuations were performed in 2020. The fair value of non-compete agreements was established using the profit differential method, which is an income approach based on estimated financial projections developed by management for the acquired company using market participant assumptions and various non-compete scenarios.

Expiration lists, non-compete agreements and trade names related to our acquisitions are amortized using the straight-line method over their estimated useful lives (two to fifteen years for expiration lists, two to six years for non-compete agreements and two to fifteen years for trade names), while goodwill is not subject to amortization. We use the straight-line method to amortize these intangible

assets because the pattern of their economic benefits cannot be reasonably determined with any certainty. We review all of our intangible assets for impairment periodically (at least annually) and whenever events or changes in business circumstances indicate that the carrying value of the assets may not be recoverable. In reviewing intangible assets, if the fair value were less than the carrying amount of the respective (or underlying) asset, an indicator of impairment would exist and further analysis would be required to determine whether or not a loss would need to be charged against current period earnings as a component of amortization expense. Based on the results of impairment reviews during the three month and six-month periods ended June 30, 2020, we wrote off $0.2 million and $46.0 million, respectively, of amortizable assets related to the brokerage and risk management segments. No such impairments were noted in the three-month and six-month periods ended June 30, 2019.

Of the $178.4 million of expiration lists, $4.6 million of non-compete agreements and $14.2 million of trade names related to our acquisitions made during the six-month period ended June 30, 2020, $3.4 million, $0.1 million and zero, respectively, is not expected to be deductible for income tax purposes. Accordingly, we recorded a deferred tax liability of $1.0 million, and a corresponding amount of goodwill, in the six-month period ended June 30, 2020, related to the nondeductible amortizable intangible assets.

Our consolidated financial statements for the six-month period ended June 30, 2020 include the operations of the entities acquired in the six-month period ended June 30, 2020 from their respective acquisition dates. The following is a summary of the unaudited pro forma historical results, as if these entities had been acquired at January 1, 2019 (in millions, except per share data):

	Three-month period ended				Six-month period ended
	June 30,				June 30,
	2020		2019		2020		2019
Total revenues	$	1,586.3	$	1,669.4	$	3,458.4	$	3,670.6
Net earnings attributable to controlling interests		153.9		111.3		500.4		451.0
Basic net earnings per share		0.81		0.60		2.63		2.42
Diluted net earnings per share		0.79		0.58		2.58		2.37

The unaudited pro forma results above have been prepared for comparative purposes only and do not purport to be indicative of the results of operations which actually would have resulted had these acquisitions occurred at January 1, 2019, nor are they necessarily indicative of future operating results. Annualized revenues of entities acquired during the six-month period ended June 30, 2020 totaled approximately $138.1 million. For the six‑month period ended June 30, 2020, total revenues and net earnings recorded in our unaudited consolidated statement of earnings related to our acquisitions made during the six-month period ended June 30, 2020 in the aggregate, were $16.6 million and $2.9 million, respectively.