UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Form 10-Q


(Mark One)
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
OF THE SECURITIES EXCHANGE ACT OF 1934


For the quarterly period ended SeptemberJune 30, 20172020
OR
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from __ to __
Commission File Number 001-08106



image0a15.jpg
MasTec, Inc.
(Exact Namename of Registrantregistrant as Specifiedspecified in Its Charter)its charter)
Florida65-0829355
(State or Otherother jurisdiction of incorporation or organization)(I.R.S. Employer
Incorporation or Organization)Identification No.)
  
800 S. Douglas Road, 12th Floor 
Coral Gables, FLFlorida33134
(Address of Principal Executive Offices)principal executive offices)(Zip Code)
(305) (305) 599-1800
(Registrant’s Telephone Number, Including Area Code)telephone number, including area code)


Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading symbol(s)Name of each exchange on which registered
Common Stock, $0.10 Par ValueMTZNew York Stock Exchange

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.     Yes þ  No ¨
Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes þ  No ¨
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.
Large accelerated filerþ Accelerated filer¨
Non-accelerated filer¨(Do not check if a smaller reporting company)
 Smaller reporting company¨
   Emerging growth company¨
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.   ¨
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act.)    Yes ¨   No þ
As of October 30, 2017,July 27, 2020, MasTec, Inc. had 82,760,62473,818,180 shares of common stock $0.10 par value, outstanding.







MASTEC, INC.
FORM 10-Q
QUARTER ENDED SEPTEMBERJUNE 30, 20172020


TABLE OF CONTENTS
 
 




PART I.     FINANCIAL INFORMATION

ITEM 1.FINANCIAL STATEMENTS



MASTEC, INC.
CONDENSED UNAUDITED CONSOLIDATED STATEMENTS OF OPERATIONS
(unaudited - in thousands, except per share amounts)



For the Three Months Ended September 30 For the Nine Months Ended September 30For the Three Months Ended June 30, For the Six Months Ended June 30,
2017 2016 2017 20162020 2019 2020 2019
Revenue$1,955,752
 $1,586,181
 $5,004,116
 $3,792,811
$1,569,297
 $1,939,006
 $2,985,901
 $3,457,346
Costs of revenue, excluding depreciation and amortization1,726,173
 1,368,988
 4,323,642
 3,321,571
1,341,825
 1,633,400
 2,568,122
 2,945,448
Depreciation and amortization50,101
 42,584
 138,384
 122,249
Depreciation57,687
 55,279
 110,776
 109,504
Amortization of intangible assets9,793
 4,665
 17,184
 9,471
General and administrative expenses66,397
 67,131
 202,001
 195,031
84,959
 70,819
 170,473
 143,436
Interest expense, net17,578
 13,097
 44,966
 37,895
14,808
 16,623
 31,812
 38,881
Equity in (earnings) losses of unconsolidated affiliates(7,399) 6
 (15,105) (3,549)
Other income, net(4,677) (971) (4,102) (12,803)
Equity in earnings of unconsolidated affiliates(6,813) (6,551) (14,647) (12,811)
Other (income) expense, net(10,527) 4,812
 (11,869) 8,317
Income before income taxes$107,579
 $95,346
 $314,330
 $132,417
$77,565
 $159,959
 $114,050
 $215,100
Provision for income taxes(43,378) (38,816) (126,170) (54,331)(20,738) (39,736) (21,161) (51,770)
Net income$64,201
 $56,530
 $188,160
 $78,086
$56,827
 $120,223
 $92,889
 $163,330
Net income attributable to non-controlling interests449
 253
 1,770
 414
Net (loss) income attributable to non-controlling interests(178) 513
 (346) 507
Net income attributable to MasTec, Inc.$63,752

$56,277
 $186,390
 $77,672
$57,005

$119,710
 $93,235
 $162,823
              
Earnings per share (Note 2):              
Basic earnings per share$0.79
 $0.70
 $2.31
 $0.97
$0.79
 $1.59
 $1.27
 $2.17
Basic weighted average common shares outstanding80,953
 80,462
 80,859
 80,323
72,045
 75,183
 73,392
 75,088
              
Diluted earnings per share$0.77
 $0.69
 $2.27
 $0.96
$0.78
 $1.58
 $1.26
 $2.15
Diluted weighted average common shares outstanding82,386
 81,545
 82,281
 81,241
72,777
 75,747
 74,135
 75,661


The accompanying notes are an integral part of these condensed unaudited consolidated financial statements.







MASTEC, INC.
CONDENSED UNAUDITED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(unaudited - in thousands)


 For the Three Months Ended September 30 For the Nine Months Ended September 30
 2017 2016 2017 2016
Net income$64,201
 $56,530
 $188,160
 $78,086
Other comprehensive income:       
Foreign currency translation gains (losses), net of tax641
 (1,454) 2,415
 4,417
Unrealized gains (losses) on equity investee activity, net of tax808
 (345) (1,287) (12,932)
Comprehensive income$65,650
 $54,731
 $189,288
 $69,571
Comprehensive income attributable to non-controlling interests449
 253
 1,770
 414
Comprehensive income attributable to MasTec, Inc.$65,201
 $54,478
 $187,518
 $69,157
 For the Three Months Ended June 30, For the Six Months Ended June 30,
 2020 2019 2020 2019
Net income$56,827
 $120,223
 $92,889
 $163,330
Other comprehensive (loss) income:       
Foreign currency translation (losses) gains, net of tax(840) 113
 (1,137) 13
Unrealized losses on equity investee activity, net of tax(1,325) (8,732) (24,286) (14,194)
Comprehensive income$54,662
 $111,604
 $67,466
 $149,149
Comprehensive (loss) income attributable to non-controlling interests(178) 513
 (346) 507
Comprehensive income attributable to MasTec, Inc.$54,840
 $111,091
 $67,812
 $148,642


The accompanying notes are an integral part of these condensed unaudited consolidated financial statements.







MASTEC, INC.
CONDENSED UNAUDITED CONSOLIDATED BALANCE SHEETS
(unaudited - in thousands, except shares and per share amounts)

information)
September 30,
2017
 December 31,
2016
June 30,
2020
 December 31,
2019
Assets      
Current assets:      
Cash and cash equivalents$43,822
 $38,767
$48,638
 $71,427
Accounts receivable, net1,534,790
 1,156,031
Accounts receivable, net of allowance927,764
 850,326
Contract assets965,887
 1,024,568
Inventories, net84,460
 111,031
104,893
 100,069
Prepaid expenses53,832
 41,548
44,138
 52,000
Other current assets30,843
 55,109
45,728
 75,169
Total current assets$1,747,747
 $1,402,486
$2,137,048
 $2,173,559
Property and equipment, net691,430
 549,084
972,177
 905,835
Operating lease assets198,844
 229,903
Goodwill, net1,135,450
 995,874
1,227,405
 1,221,440
Other intangible assets, net195,454
 179,711
202,165
 211,528
Other long-term assets172,094
 55,977
252,346
 254,741
Total assets$3,942,175
 $3,183,132
$4,989,985
 $4,997,006
Liabilities and equity      
Current liabilities:      
Current portion of long-term debt$86,547
 $64,600
Current portion of long-term debt, including finance leases$126,697
 $118,429
Current portion of operating lease liabilities78,044
 81,561
Accounts payable457,213
 363,668
630,456
 535,029
Accrued salaries and wages119,553
 67,126
118,068
 87,562
Other accrued expenses128,769
 112,291
163,629
 115,581
Billings in excess of costs and earnings111,898
 161,459
Contract liabilities338,230
 206,180
Other current liabilities98,171
 70,846
68,267
 74,784
Total current liabilities$1,002,151
 $839,990
$1,523,391
 $1,219,126
Long-term debt1,192,311
 961,379
Long-term debt, including finance leases1,115,839
 1,314,030
Long-term operating lease liabilities133,535
 154,553
Deferred income taxes274,465
 178,355
267,525
 296,326
Other long-term liabilities170,203
 99,774
198,859
 221,280
Total liabilities$2,639,130
 $2,079,498
$3,239,149
 $3,205,315
Commitments and contingencies (Note 14)


 



 


Equity      
Preferred stock, $1.00 par value: authorized shares - 5,000,000; issued and outstanding shares – none$
 $
$
 $
Common stock, $0.10 par value: authorized shares - 145,000,000; issued shares - 90,843,339 and 90,634,771 (including 1,790,632 and 1,927,286 of unvested restricted shares) as of September 30, 2017 and December 31, 2016, respectively9,084
 9,063
Common stock, $0.10 par value: authorized shares - 145,000,000; issued shares - 92,665,097 and 91,909,430 (including 1,734,554 and 1,221,593 of unvested stock awards) as of June 30, 2020 and December 31, 2019, respectively9,267
 9,191
Capital surplus800,297
 788,914
821,584
 809,753
Retained earnings696,331
 509,941
1,603,944
 1,510,709
Accumulated other comprehensive loss(64,686) (65,814)(101,129) (75,706)
Treasury stock, at cost: 8,094,004 shares as of both September 30, 2017 and December 31, 2016(145,573) (145,573)
Treasury stock, at cost: 18,941,926 shares and 15,344,917 shares as of June 30, 2020 and December 31, 2019, respectively(586,955) (466,727)
Total MasTec, Inc. shareholders’ equity$1,295,453
 $1,096,531
$1,746,711
 $1,787,220
Non-controlling interests$7,592
 $7,103
$4,125
 $4,471
Total equity$1,303,045
 $1,103,634
$1,750,836
 $1,791,691
Total liabilities and equity$3,942,175
 $3,183,132
$4,989,985
 $4,997,006


The accompanying notes are an integral part of these condensed unaudited consolidated financial statements.





MASTEC, INC.
CONDENSED UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWSEQUITY
(unaudited - in thousands)thousands, except shares)


 For the Nine Months Ended September 30
 2017 2016
Cash flows from operating activities:   
Net income$188,160
 $78,086
Adjustments to reconcile net income to net cash provided by operating activities:   
Depreciation and amortization138,384
 122,249
Non-cash interest expense, net2,375
 2,209
Non-cash stock-based compensation expense10,551
 11,291
Provision for (benefit from) deferred income taxes92,188
 (1,339)
Equity in earnings of unconsolidated affiliates(15,105) (3,549)
(Gains) losses on sales of assets, net, including fixed assets held-for-sale(3,335) 378
Other non-cash items, net14,920
 1,951
Changes in assets and liabilities, net of acquisitions:   
Accounts receivable(334,383) (302,590)
Inventories33,579
 (18,900)
Other assets, current and long-term portion(61,900) 48,032
Accounts payable and accrued expenses132,963
 172,731
Billings in excess of costs and earnings(54,199) 16,581
Book overdrafts(4,603) 8,883
Other liabilities, current and long-term portion39,030
 (8,872)
Net cash provided by operating activities$178,625
 $127,141
Cash flows from investing activities:   
Cash paid for acquisitions, net of cash acquired(115,995) (4,102)
Capital expenditures(83,330) (89,050)
Proceeds from sale of property and equipment13,585
 6,824
Payments for other investments(77,105) (8,858)
Proceeds from other investments13,416
 1,125
Net cash used in investing activities$(249,429) $(94,061)
Cash flows from financing activities:   
Proceeds from credit facilities2,002,430
 1,186,816
Repayments of credit facilities(1,840,409) (1,149,930)
Repayments of other borrowings(12,080) (8,188)
Payments of capital lease obligations(48,748) (41,828)
Payments of acquisition-related contingent consideration(18,843) (19,822)
Distributions to non-controlling interests(1,280) 
Proceeds from stock-based awards, net853
 3,938
Other financing activities, net(6,301) 1,385
Net cash provided by (used in) financing activities$75,622
 $(27,629)
Effect of currency translation on cash237
 (1,008)
Net increase in cash and cash equivalents$5,055
 $4,443
Cash and cash equivalents - beginning of period$38,767
 $4,984
Cash and cash equivalents - end of period$43,822
 $9,427
Supplemental cash flow information:   
Interest paid$47,163
 $40,433
Income taxes paid, net of refunds$77,533
 $15,141
Supplemental disclosure of non-cash information:   
Acquisition-related contingent consideration, new business combinations

$89,614
 $
Equipment acquired under capital lease and financing arrangements$129,567
 $13,015
Accrued capital expenditures$1,345
 $4,119

 Common Stock Treasury Stock Capital Surplus Retained Earnings Accumulated Other Comprehensive Loss 
Total
MasTec, Inc. Shareholders’ Equity
 Non-Controlling Interests Total Equity
 Shares Amount Shares Amount      
For the Three Months Ended June 30, 2020                   
Balance as of March 31, 202092,618,032
 $9,262
 (18,914,841) $(586,153) $814,425
 $1,546,939
 $(98,963) $1,685,510
 $4,303
 $1,689,813
Net income (loss)          57,005
   57,005
 (178) 56,827
Other comprehensive loss            (2,166) (2,166)   (2,166)
Non-cash stock-based compensation        5,850
     5,850
   5,850
Forfeiture of restricted shares, net(1,424) 
     
     
   
Other stock issuances, net of shares withheld for taxes48,489
 5
     1,309
     1,314
   1,314
Acquisition of treasury stock, at cost    (27,085) (802)       (802)   (802)
Balance as of June 30, 202092,665,097
 $9,267
 (18,941,926) $(586,955) $821,584
 $1,603,944
 $(101,129) $1,746,711
 $4,125
 $1,750,836
                    
For the Three Months Ended June 30, 2019                   
Balance as of March 31, 201991,591,398
 $9,159
 (15,344,917) $(466,727) $793,748
 $1,161,487
 $(66,056) $1,431,611
 $2,121
 $1,433,732
Net income          119,710
   119,710
 513
 120,223
Other comprehensive loss            (8,619) (8,619)   (8,619)
Non-cash stock-based compensation        4,220
     4,220
   4,220
Issuance of restricted shares, net57
 
     
     
   
Other stock issuances, net of shares withheld for taxes35,531
 4
     1,194
     1,198
   1,198
Contributions from non-controlling interests              
 584
 584
Balance as of June 30, 201991,626,986
 $9,163
 (15,344,917) $(466,727) $799,162
 $1,281,198
 $(74,675) $1,548,121
 $3,217
 $1,551,338

The accompanying notes are an integral part of these condensed unaudited consolidated financial statements.




MASTEC, INC.
CONSOLIDATED STATEMENTS OF EQUITY
(unaudited - in thousands, except shares)

 Common Stock Treasury Stock Capital Surplus Retained Earnings Accumulated Other Comprehensive Loss 
Total
MasTec, Inc. Shareholders’ Equity
 Non-Controlling Interests Total Equity
 Shares Amount Shares Amount      
For the Six Months Ended June 30, 2020                   
Balance as of December 31, 201991,909,430
 $9,191
 (15,344,917) $(466,727) $809,753
 $1,510,709
 $(75,706) $1,787,220
 $4,471
 $1,791,691
Net income (loss)          93,235
   93,235
 (346) 92,889
Other comprehensive loss            (25,423) (25,423)   (25,423)
Non-cash stock-based compensation        9,899
     9,899
   9,899
Issuance of restricted shares, net693,355
 69
     (69)     
   
Other stock issuances, net of shares withheld for taxes62,312
 7
     2,001
     2,008
   2,008
Acquisition of treasury stock, at cost    (3,597,009) (120,228)       (120,228)   (120,228)
Balance as of June 30, 202092,665,097
 $9,267
 (18,941,926) $(586,955) $821,584
 $1,603,944
 $(101,129) $1,746,711
 $4,125
 $1,750,836
                    
For the Six Months Ended June 30, 2019                   
Balance as of December 31, 201891,327,009
 $9,133
 (15,329,817) $(466,125) $789,009
 $1,118,375
 $(60,494) $1,389,898
 $2,126
 $1,392,024
Net income          162,823
   162,823
 507
 163,330
Other comprehensive loss            (14,181) (14,181)   (14,181)
Non-cash stock-based compensation        7,940
     7,940
   7,940
Issuance of restricted shares, net233,419
 23
     (23)     
   
Other stock issuances, net of shares withheld for taxes66,558
 7
     2,236
     2,243
   2,243
Acquisition of treasury stock, at cost    (15,100) (602)       (602)   (602)
Contributions from non-controlling interests              
 584
 584
Balance as of June 30, 201991,626,986
 $9,163
 (15,344,917) $(466,727) $799,162
 $1,281,198
 $(74,675) $1,548,121
 $3,217
 $1,551,338

The accompanying notes are an integral part of these consolidated financial statements.





MASTEC, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS
(unaudited - in thousands)

 For the Six Months Ended June 30,
 2020 2019
Cash flows from operating activities:   
Net income$92,889
 $163,330
Adjustments to reconcile net income to net cash provided by operating activities:   
Depreciation110,776
 109,504
Amortization of intangible assets17,184
 9,471
Non-cash interest expense, net1,451
 737
Non-cash stock-based compensation expense9,899
 7,940
Benefit from deferred income taxes(20,575) (14,190)
Equity in earnings of unconsolidated affiliates(14,647) (12,811)
Gains on sales of assets, net(8,334) (6,074)
Other non-cash items, net12,297
 (2,899)
Changes in assets and liabilities, net of acquisitions:   
Accounts receivable, net of allowance(60,246) 3,196
Contract assets64,321
 113,827
Inventories(4,629) (265)
Other assets, current and long-term portion31,234
 6,187
Accounts payable and accrued expenses164,297
 (26,355)
Contract liabilities130,784
 (12,278)
Other liabilities, current and long-term portion(30,199) 12,141
Net cash provided by operating activities$496,502
 $351,461
Cash flows from investing activities:   
Cash paid for acquisitions, net of cash acquired(10,493) (94,647)
Capital expenditures(132,755) (57,455)
Proceeds from sale of property and equipment17,861
 19,567
Payments for other investments(16,777) (4,972)
Proceeds from other investments648
 14,705
Other investing activities, net4,843
 
Net cash used in investing activities$(136,673) $(122,802)
Cash flows from financing activities:   
Proceeds from credit facilities1,235,935
 1,627,909
Repayments of credit facilities(1,401,899) (1,754,043)
(Repayments of) proceeds from other borrowings, net(17) 1
Payments of finance lease obligations(61,587) (38,646)
Payments of acquisition-related contingent consideration(39,379) (29,267)
Proceeds from non-controlling interests
 584
Proceeds from stock-based awards3,936
 2,311
Payments for stock-based awards(593) (22)
Repurchases of common stock(120,228) (5,652)
Net cash used in financing activities$(383,832) $(196,825)
Effect of currency translation on cash1,214
 (80)
Net (decrease) increase in cash and cash equivalents$(22,789) $31,754
Cash and cash equivalents - beginning of period$71,427
 $27,422
Cash and cash equivalents - end of period$48,638
 $59,176
Supplemental cash flow information:   
Interest paid$33,046
 $43,102
Income tax payments, net of refunds$1,469
 $39,417
Supplemental disclosure of non-cash information:   
Additions to property and equipment from finance leases$44,987
 $110,164

The accompanying notes are an integral part of these consolidated financial statements.


MASTEC, INC.
NOTES TO CONDENSED UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
Note 1 – Business, Basis of Presentation and Significant Accounting Policies
Nature of the Business
MasTec, Inc. (collectively with its subsidiaries, “MasTec” or the “Company”) is a leading infrastructure construction company operating mainly throughout North America across a range of industries. The Company’s primary activities include the engineering, building, installation, maintenance and upgrade of communications, energy, utility and utilityother infrastructure, such as: wireless, wireline/fiber install-to-the-home and customer fulfillment activities; petroleum and natural gas pipeline infrastructure; electrical utility transmission and distribution; power generation;generation, including from renewable sources; heavy civil; and industrial infrastructure. MasTec’s customers are primarily in these industries. MasTec reports its results under five5 reportable segments: (1) Communications; (2) Oil and Gas; (3) Electrical Transmission; (4) Clean Energy and Infrastructure; and (5) Other. During the second quarter of 2020, the Company renamed its Power Generation and Industrial;Industrial segment as the Clean Energy and (5) Other.Infrastructure segment to better represent the nature of the segment’s operations, end markets and customer characteristics. There was no change to the composition of the segment or its historical results.
Basis of Presentation
The accompanying condensed unaudited consolidated financial statements are unaudited and have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) for interim financial information and with the instructions for Form 10-Q and Rule 10-01 of Regulation S-X. Pursuant to these rules and regulations, certain information and footnote disclosures normally included in the annual audited consolidated financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. The accompanying condensed consolidated balance sheet as of December 31, 20162019 is derived from the Company’s audited financial statements as of that date. Because certain information and footnote disclosures have been condensed or omitted, these condensed unaudited consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto as of and for the year ended December 31, 20162019 contained in the Company’s 20162019 Annual Report on Form 10-K (the “2016“2019 Form 10-K”). In management’s opinion, all normal and recurring adjustments considered necessary for a fair presentation of the financial position, results of operations and cash flows for the periods presented have been included. CertainWhen necessary, certain prior year amounts have been reclassified to conform to the current period presentation. Interim period operating results do not necessarily indicate the results that may be expected for any other interim period or for the full fiscal year. The Company believes that the disclosures made in these condensed unaudited consolidated financial statements are adequate to make the information not misleading.
Principles of Consolidation
The accompanying condensed unaudited consolidated financial statements include MasTec, Inc. and its subsidiaries and include the accounts of all majority owned subsidiaries over which the Company exercises control and, when applicable, entities in which the Company has a controlling financial interest. All significant intercompany balances and transactions have been eliminated in consolidation. Other parties’ interests in entities that MasTec consolidates are reported as non-controlling interests within equity.equity, except for mandatorily redeemable non-controlling interests, which are recorded within liabilities. Net income or loss attributable to non-controlling interests is reported as a separate line item below net income or loss. The Company’s investments in entities for which the Company does not have a controlling interest, but forover which it has the ability to exert significant influence, are accounted for using the equity method of accounting. Equity method investments are recorded as other long-term assets, or, for investments in a net liability position, within other long-term liabilities. Income or loss from these investments is recorded as a separate line item in the statements of operations. Intercompany profits or losses associated with the Company’s equity method investments are eliminated until realized by the investee in transactions with third parties. For equity investees in which the Company has an undivided interest in the assets, liabilities and profits or losses of an unincorporated entity, but the Company does not exercise control over the entity, the Company consolidates its proportional interest in the accounts of the entity. The cost method is used for investments in entities for which the Company does not have the ability to exert significant influence.
Management determines whether each business entity in which it has equity interests, debt, or other investments constitutes a variable interest entity (“VIE”) based on the nature and characteristics of such arrangements. If an investment arrangement is determined to be a VIE, then management determines if the Company is the VIE’s primary beneficiary by evaluating several factors, including the Company’s: (i) risks and responsibilities; (ii) ownership interests; (iii) decision making powers; and (iv) financial interests, among other factors. If management determines the Company is the primary beneficiary of a VIE, then it would be consolidated, and other parties’ interests in the VIE would be accounted for as non-controlling interests. The primary beneficiary consolidating the VIE must normally have both (i) the power to direct the primary activities of the VIE and (ii) the obligation to absorb losses of the VIE or the right to receive benefits from the VIE, which, in either case, could be significant to the VIE. As of September 30, 2017, the Company determined that certain of its investment arrangements were VIEs; however, because it does not have the power to direct the primary activities that most significantly impact the economic performance of these VIEs, the Company is not the primary beneficiary, and accordingly, has not consolidated these VIEs.
Translation of Foreign Currencies
The assets and liabilities of foreign subsidiaries with a functional currency other than the U.S. dollar are translated into U.S. dollars at period-end exchange rates, with resulting translation gains or losses accumulatedincluded within other comprehensive income or loss. Revenue and expenses are translated into U.S. dollars at average rates of exchange during the applicable period. Substantially all of the Company’s foreign operations use their local currency as their functional currency. Currency gains or losses resulting from transactions executed in currencies other than the functional currency are included in other income or expense, net. In these condensed unaudited consolidated financial statements, “$” means U.S. dollars unless otherwise noted.
Management Estimates
The preparation of consolidated financial statements in conformityaccordance with U.S. GAAP requires the use of estimates and assumptions that affect


the amounts reported in the consolidated financial statements and accompanying notes. KeyThese estimates include:are based on historical experience and various other assumptions, including the recognitionpotential future effects of revenuethe COVID-19 pandemic and project profit or loss (whichother relevant global events. These estimates form the Company defines as project revenue, less project costs of revenue, including project-related depreciation), in particular, on construction contracts accountedbasis for undermaking judgments about the percentage-of-completion method, for which the recorded amounts require estimates of costs to completeCompany’s operating results and the amount of probable contract price adjustments; allowances for doubtful accounts; estimated faircarrying values of goodwillassets and intangible assets; acquisition-related contingent consideration and investments in equity investees; asset lives used in computing depreciation and amortization; fair values of financial instruments; accrued self-insured claims; share-based compensation;liabilities that are not readily apparent from other accruals and allowances; accounting for income taxes; and the estimated impact of litigation and other contingencies.sources. While management believes that such estimates are reasonable when considered in conjunction with the Company’s consolidated financial position and results of operations taken as a whole, actual results could differ materially from those estimates.
Key estimates include: the recognition of revenue and project profit or loss, which the Company defines as project revenue, less project costs of revenue, including project-related depreciation, in particular, on construction contracts accounted for under the cost-to-cost method, for which the recorded amounts require estimates of costs to complete and the amount and probability of variable consideration included in the contract transaction price; fair value estimates, including those related to acquisitions, valuations of goodwill and intangible assets, acquisition-related contingent consideration and other liabilities, equity investments and other long-lived assets; allowances for credit losses; asset lives used in computing depreciation and amortization; fair values of financial instruments; self-insurance liabilities; other accruals and allowances; income taxes; and the estimated effects of litigation and other contingencies.




Significant Accounting Policies
Revenue Recognition
The Company recognizes revenue from contracts with customers under Accounting Standards Codification (“ASC”) Topic 606 (“Topic 606”). Under Topic 606, revenue is recognized when, or as, control of promised goods and services is transferred to customers, and the amount of revenue recognized reflects the consideration to which an entity expects to be entitled in exchange for the goods and services transferred. Revenue is derivedprimarily recognized by the Company over time utilizing the cost-to-cost measure of progress, which best depicts the continuous transfer of control of goods or services to the customer, and correspondingly, when performance obligations are satisfied for the related contracts.
Contracts. The Company derives revenue primarily from construction projects performed underunder: (i) master and other service agreements, as well as fromwhich provide a menu of available services in a specific geographic territory that are utilized on an as-needed basis, and are typically priced using either a time and materials, or a fixed price per unit basis; and (ii) contracts for specific projects or jobs requiring the construction and installation of an entire infrastructure system, or specified units within an entire infrastructure system. The Company frequently provides services undersystem, which are subject to multiple pricing options, including fixed price, unit price, or fixed price master service or other service agreements. Revenue and related costs for master and other service agreements billed on a time and materials, basis are recognized as the services are rendered.or cost plus a markup. Revenue derived from projects performed under master service and other service agreements totaled 32%36% and 38%33% of consolidated revenue for the three month periods ended SeptemberJune 30, 20172020 and 2016,2019, respectively, and totaled 35%39% and 43%36% for the ninesix month periods ended SeptemberJune 30, 20172020 and 2016,2019, respectively. The Company also performs services under
For certain master service and other service agreements on a fixed fee basis, under which MasTec furnishes specified units ofthe Company performs installation and maintenance services, primarily for install-to-the-home service for a fixed price per unit of service andproviders in its Communications segment, revenue is recognized asat a point in time. This is generally when the services are rendered. Revenue from fixed price contracts provideswork order has been fulfilled, which is typically the same day the work is initiated. For each of the three and six month periods ended June 30, 2020 and 2019, point in time revenue accounted for a fixed amountapproximately 5% of revenue forconsolidated revenue. Substantially all of the entire project, subject to certain additions for changed scope or specifications. Revenue from these contracts, as well as for certain projects pursuant to master andCompany’s other service agreements,revenue is recognized using the percentage-of-completion method, under which the percentage of revenue to be recognized for a given project is measured by the percentage of costs incurred to date on the contract to the total estimated costs for the contract. Such contracts provide that the customer accept completion of progress to date and compensate the Company for services rendered, which may be measured in terms of costs incurred, units installed, hours expended or some other measure of progress. Contract costs include all direct materials, labor and subcontracted costs and those indirect costs related to contract performance, such as indirect labor, supplies, tools, repairs and the operational costs of capital equipment. Much of the materials associated with the Company’s work are customer-furnished and are therefore not included in contract revenue and costs.over time.
The total contract transaction price and cost estimation processprocesses used for recognizing revenue recognizedover time under the percentage-of-completioncost-to-cost method is based on the professional knowledge and experience of the Company’s project managers, engineers and financial professionals. Management reviews estimates of total contract revenuetransaction price and total project costs on an ongoing basis. Changes in job performance, job conditions and management’s assessment of expected contract settlementsvariable consideration are factors that influence estimates of the total contract value andtransaction price, total costs to complete those contracts and therefore, the Company’s profit recognition. Changes in these factors maycould result in revisions to costs and income and their effects are recognizedrevenue in the period in which the revisions are determined, which could materially affect the Company’s consolidated results of operations for that period. Provisions for losses on uncompleted contracts are recorded in the period in which such changeslosses are recognized.determined. For both the ninesix month periods ended SeptemberJune 30, 20172020 and 2016,2019, project profit was affected by less than 5% as a result of changes in contract estimates included in projects that were in process as of December 31, 20162019 and 2015. Provisions2018. Revenue recognized for losses on uncompleted contracts are madethe three month periods ended June 30, 2020 and 2019 as a result of changes in total contract transaction price estimates, including for variable consideration, from performance obligations satisfied or partially satisfied in prior periods, totaled approximately $5.4 million and $22.6 million, respectively, and totaled $15.8 million and $28.9 million for the period in which such losses are determined to be probablesix month periods ended June 30, 2020 and the amount2019, respectively.
The Company may incur certain costs that can be reasonably estimated.capitalized, such as initial set-up or mobilization costs. Such costs, which are amortized over the life of the respective projects, were not material for the three or six month periods ended June 30, 2020 or 2019.
Performance Obligations.A performance obligation is a contractual promise to transfer a distinct good or service to a customer, and is the unit of account under Topic 606. The transaction price of a contract is allocated to each distinct performance obligation and recognized as revenue when or as the performance obligation is satisfied. The vast majority of fixed price contractsthe Company’s performance obligations are completed within one year.
TheRemaining performance obligations represent the amount of unearned transaction prices under contracts for which work is wholly or partially unperformed, including the Company’s share of unearned transaction prices from its proportionately consolidated non-controlled joint ventures. As of June 30, 2020, the amount of the Company’s remaining performance obligations was $5.3 billion. Based on current expectations, the Company expects to recognize approximately $2.8 billion of its remaining performance obligations as revenue during 2020, with the remainder to be recognized primarily in 2021.
Variable Consideration. Transaction prices for the Company’s contracts may incur costs subject toinclude variable consideration, which comprises items such as change orders, whether approved or unapproved byclaims and incentives. Management estimates variable consideration for a performance obligation utilizing estimation methods that it believes best predict the customer, and/or claims relatedamount of consideration to certain contracts. Management determineswhich the probability that such costsCompany will be recoveredentitled. Management’s estimates of variable consideration and the determination of whether to include estimated amounts in transaction prices are based uponlargely on engineering studies and legal opinions, past practices with the customer, specific discussions, correspondence or preliminary negotiations with the customer. The Company treats such costs as a costcustomer and all other relevant information that is reasonably available at the time of contract performancethe estimate. To the extent unapproved change orders, claims and other variable consideration reflected in transaction prices are not resolved in the period incurred if it is not probable that the costs will be recovered, and defers costsCompany’s favor, or recognizes revenue up to the amountextent incentives reflected in transaction prices are not earned, there could be reductions in, or reversals of, the related cost if it is probable that the contract price will be adjusted and can be reliably estimated. previously recognized revenue.
As of SeptemberJune 30, 20172020 and December 31, 2016,2019, the Company hadincluded approximately $77$40 million and $17$27 million, respectively, of change orders and/or claims that had been included as contract price adjustments onin transaction prices for certain contracts that were in the process of being resolved in the normalordinary course of business, including through negotiation, arbitration and other proceedings. These contracttransaction price adjustments, whichwhen earned, are included within costs and earnings in excess of billingscontract assets or billed accounts receivable, net of allowance, as appropriate, represent management’s best estimate of contract revenue that has been earned and that management believes is probable of collection.appropriate. As of both SeptemberJune 30, 20172020 and December 31, 2016,2019, these change orders and/or claims were primarily related to contractscertain projects in the Company’s Oil and Gas segment.and Electrical Transmission segments. The Company actively engages in substantive meetings with its customers to complete the final approval process, and generally expects these processes to be completed within one year. The amountsAmounts ultimately realized upon final acceptanceagreement by its customers could be higher or lower than such estimated amounts.
Billings In Excess of Costs and Earnings (“BIEC”) on uncompleted contracts is classified within current liabilities. Costs and Earnings In Excess of Billings (“CIEB”), which is also referred to as work in process, is classified within current assets. Work in process on contracts is based on work performed but not yet billed to customers as per individual contract terms.
Recently Issued Accounting Pronouncements
There have been no changes inSee the expected dates of adoption or estimatedrecent accounting pronouncements discussion below for information pertaining to the effects on the Company’s consolidated financial statements of recently issuedadopted and other recent accounting pronouncements, as updated from those disclosedthe discussion in the Company’s 20162019 Form 10-K. See below for additional discussion of recently issued accounting pronouncements.




Accounting Pronouncements Not Yet Adopted in 2020
In August 2017,2018, the Financial Accounting Standards Board (“FASB”) issued Accounting StandardsStandard Update (“ASU”)2017-12, Derivatives 2018-15, Intangibles-Goodwill and Hedging (Topic 815): Targeted Improvements toOther-Internal-Use Software (Subtopic 350-40)Customer’s Accounting for Hedging ActivitiesImplementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract (“ASU 2017-12”2018-15”). to reduce diversity in practice in accounting for the costs of implementing cloud computing arrangements that are service contracts. ASU 2017-12 amends2018-15 aligns the hedge accounting modelrequirements for capitalizing implementation costs incurred in Topic 815a cloud computing arrangement that is a service contract with the requirements for internal-use software. Accounting for the service element of the cloud computing arrangement is not affected by the new guidance. Under ASU 2018-15, amortization expense, payments for and asset balances related to enable entities to better portray the economics of their risk management activities in the financial statements and enhance the transparency and understandability of hedge results. The guidance eliminates the requirement to separately measure and report hedge ineffectiveness and generally requires the entire change in the fair value of a hedging instrumentsuch capitalized implementation costs are to be presented inwithin the same income statement line items of the entity’s statements of operations, cash flows and balance sheets, respectively, as the hedged item. The guidance also simplifies certain documentationrelated service fee activity and assessment requirements.balances would be presented. ASU 2017-12 is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2018, with early adoption permitted. All transition requirements and elections should be applied to hedging relationships existing on2018-15, which the date of adoption and their effects should be reflected as of the beginning of the fiscal year of adoption. The presentation and disclosure requirements are effective on a prospective basis. The Company is currently evaluating the potential effect of this ASU on its consolidated financial statements.

In May 2017, FASB issued ASU 2017-09, Compensation - Stock Compensation (Topic 718): Scope of Modification Accounting (“ASU 2017-09”). ASU 2017-09 clarifies when a change to the terms or conditions of a share-based payment award must be accounted for as a modification. Limited and administrative modifications that do not change the value, vesting conditions, or classification of the award are exempt from following the modification guidance in Topic 718. ASU 2017-09 is effectiveadopted on a prospective basis for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2017, with early adoption permitted. The Company does not expectduring the adoptionfirst quarter of this ASU to have a material effect on its consolidated financial statements.
In February 2017, the FASB issued ASU 2017-05, Other Income- Gains and Losses from the Derecognition of Nonfinancial Assets (Subtopic 610-20): Clarifying the Scope of Asset Derecognition Guidance and Accounting for Partial Sales of Nonfinancial Assets(“ASU 2017-05”). ASU 2017-05 clarifies certain guidance under Subtopic 610-20 that was issued as part of the new revenue standard, including the recognition of gains and losses on the sale or transfer of nonfinancial assets to noncustomers, and clarifies accounting for contributions of nonfinancial assets to joint ventures, among other requirements. ASU 2017-05 is effective on a retrospective basis for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2017, with early adoption permitted. The Company is currently evaluating the potential effect of this ASU on its consolidated financial statements.
In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) (“ASU 2014-09”). The core principle of this ASU is that a company will recognize revenue when it transfers goods or services to customers in an amount that reflects the consideration to which it expects to be entitled in exchange for those goods or services. In doing so, companies will need to use judgment and make estimates when evaluating contract terms and other relevant facts and circumstances. Additionally, ASU 2014-09 requires enhanced disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts. In August 2015, the FASB issued ASU 2015-14, Revenue from Contracts with Customers (Topic 606): Deferral of the Effective Date, which delayed the effective date of ASU 2014-09 by one year. ASU 2014-09, as amended, is effective using either the full retrospective or modified retrospective transition approach for fiscal years, and for interim periods within those years, beginning after December 15, 2017. In 2016, the FASB issued several accounting standards updates to clarify certain topics within ASU 2014-09. The Company will adopt ASU 2014-09, and its related clarifying ASUs, as of January 1, 2018.
The Company has substantially completed its assessment of the potential effects of these ASUs on its consolidated financial statements, business processes, systems and controls.  The Company’s assessment included a detailed review of representative contracts at each of the Company’s business units and a comparison of its historical accounting policies and practices to the new standard. Based on the Company’s review of various types of revenue arrangements, the Company expects to recognize revenue and earnings over time utilizing the cost-to-cost measure of progress for its fixed price contracts and certain master service and other service agreements, consistent with current practice.  For these contracts, the cost-to-cost measure of progress best depicts the transfer of control of goods or services to the customer under the new standard. The Company has substantially completed its analysis of the information necessary to enable the preparation of the financial statements and related disclosures under the new standard. As part of this analysis, the Company evaluated its information technology capabilities and systems, and does not expect to incur significant information technology costs to modify systems currently in place. The Company will implement targeted changes to its internal reporting processes to facilitate gathering the data needed for reporting and disclosure under the new standard. The Company will also implement updates to its control processes and procedures, as necessary, based on changes resulting from the new standard. The Company does not expect any such updates to materially affect the Company’s internal controls over financial reporting.
The Company anticipates adopting the standard using the modified retrospective transition approach.  Under this approach, the new standard would apply to all new contracts initiated on or after January 1, 2018.  For existing contracts that have remaining obligations as of January 1, 2018, any difference between the recognition criteria in these ASUs and the Company’s current revenue recognition practices would be recognized using a cumulative effect adjustment to the opening balance of retained earnings.  Any potential effect of adoption of these ASUs has not yet been quantified; however, based on the review of contracts across all of the Company’s business units to date, the adoption of these ASUs is not expected to have a material effect on the timing or amount of revenue recognized as compared to current practices.  The Company is training its business units for the implementation of the new standard, and continues developing the disclosures required by the new standard. The Company is also reviewing certain contracts entered into by its business units subsequent to its initial assessment that are expected to have performance obligations remaining as of January 1, 2018 for any cumulative effect adjustments that may be required upon adoption.
Accounting Pronouncements Adopted as of January 1, 2017
The Company adopted ASU 2016-09, Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting (“ASU 2016-09”) effective January 1, 2017. Under ASU 2016-09, excess tax benefits (“windfalls”) or tax deficiencies (“shortfalls”) are recognized in the income statement, rather than as additional paid-in-capital as under the previous guidance, and are presented as operating cash flows,


rather than as a financing activity. This ASU also increased the amount of tax that can be withheld by an employer for employee tax withholdings without resulting in liability classification of an award. Payments to taxing authorities for such employee withholdings are presented as financing activities. ASU 2016-09 also allows companies to account for forfeitures of share-based payments as they occur or to estimate such amounts. The provisions of ASU 2016-09 that were applicable to the Company were adopted on a prospective basis; the retrospective requirement to classify payments to taxing authorities for employee withholdings as a financing activity was consistent with the Company’s existing methodology, therefore did not result in a change. The adoption of ASU 2016-09 is expected to result in volatility in income tax expense given that windfalls or shortfalls are recognized in income tax expense in the periods in which they occur. The other components of this ASU2020, did not have a material effect on the Company’s consolidated financial statements.
In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement (Topic 820) Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement (“ASU 2018-13”). ASU 2018-13, which is intended to improve the effectiveness of fair value measurement disclosures, modifies the disclosure requirements for certain estimates and assumptions used in determining the fair value of assets and liabilities. ASU 2018-13, which the Company adopted during the first quarter of 2020, did not have a material effect on the Company’s consolidated financial statements. See Note 4 - Fair Value of Financial Instruments for disclosure updates pertaining to significant unobservable inputs used to develop fair value estimates for certain of the Company’s Level 3 financial instruments.
In June 2016, the FASB issued ASU 2016-13, Financial Instruments - Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments. This ASU, together with its related clarifying ASUs (collectively, “ASU 2016-13”), introduced an expected credit loss methodology for the measurement and recognition of credit losses on most financial assets, including financial assets arising from revenue transactions, such as accounts receivable and contract assets. The new expected credit loss methodology, which is based on historical experience, current conditions and reasonable and supportable forecasts, replaced the incurred loss model for measuring and recognizing expected credit losses. The Company adopted this ASU in the first quarter of 2020 and incorporated this guidance into its methodology for estimating its accounts receivable allowances. Based on historical trends, the financial condition of the Company’s customers and management’s expectations of economic and industry factors affecting the Company’s customers, ASU 2016-13 did not have a material effect on the Company’s consolidated financial statements upon adoption. Future credit loss expectations could be affected by changes in estimates or developing trends, including from changes in credit quality of the Company’s customers, changes in specific risks associated with the Company’s financial assets, or from changes in management’s expectations of future economic and industry conditions or other factors. Management actively monitors the economic environment, including any potential effects from the COVID-19 pandemic and/or volatility in the oil and gas markets on the credit quality of the Company’s customers and/or its financial assets. For additional information about the Company’s accounts receivable and related allowances, see Note 5 - Accounts Receivable, Net of Allowance, and Contract Assets and Liabilities.
In March 2020, the Securities and Exchange Commission (the “SEC”) issued a final rule, Financial Disclosures about Guarantors and Issuers of Guaranteed Securities and Affiliates Whose Securities Collateralize a Registrant’s Securities, that simplifies the disclosure requirements related to registered debt securities under Rule 3-10 of Regulation S-X. Among other updates, the final rule replaces the requirement to provide condensed consolidating financial information with a requirement to provide summarized financial information of the issuers and guarantors, reduces the periods for which summarized financial information is required to the most recent annual period and year-to-date interim period, and permits the disclosures to be located outside the financial statements. The Company early adopted the reporting requirements of the final rule in the second quarter of 2020, and the disclosure required thereby is included within Item 2, - Earnings Per Share, Note 9 - Stock-Based CompensationManagement’s Discussion and Analysis of Financial Condition and Results of Operations for related disclosures.
Other Employee Benefit PlansRecent Accounting Pronouncements
In March 2020, the FASB issued ASU 2020-04, Reference Reform Rate (Topic 848):Facilitation of the Effects of Reference Rate Reform on Financial Reporting (“ASU 2020-04”) to provide temporary optional expedients and Note 12 - Income Taxes for additional information.exceptions to the contract modifications, hedge relationships and other transactions affected by reference rate reform if certain criteria are met. This ASU, which was effective upon issuance and may be applied through December 31, 2022, is applicable to all contracts and hedging relationships that reference the London Interbank Offered Rate or any other reference rate expected to be discontinued. The guidance in ASU 2020-04 may be implemented over time as reference rate reform activities occur. The Company is currently evaluating the impact of reference rate reform and the potential application of this guidance.
Note 2 – Earnings Per Share
Basic earnings or loss per share is computed by dividing net income or loss attributable to MasTec by the weighted average number of common shares outstanding for the period, which excludes non-participating unvested restricted share awards. Diluted earnings per share is computed by dividing net income attributable to MasTec by the weighted average number of fully diluted shares, as calculated under the treasury stock method, which includes the potential effect of dilutive common stock equivalents, such as issued but unvested restricted shares and/or outstanding but unexercised stock options. The Company has no remaining outstanding stock options; all options under the Company’s stock option grants were exercised in 2016.shares. If the Company reports a loss, rather than income, the computation of diluted loss per share excludes the effect of dilutive common stock equivalents, as their effect would be anti-dilutive.
As discussed in Note 1 - Business, Basis of Presentation and Significant Accounting Policies, the Company adopted ASU 2016-09 effective January 1, 2017 on a prospective basis. ASU 2016-09 changed the recognition of excess tax benefits or tax deficiencies upon the vesting of share-based payment awards from additional paid-in capital, within equity, to income tax benefit or expense, within the statement of operations. As a result, excess tax benefits or deficiencies under ASU 2016-09 are excluded from assumed proceeds under the treasury stock method. Previously, excess tax benefits or tax deficiencies were included within assumed proceeds. For both the three and nine month periods ended September 30, 2017, this resulted in the inclusion of approximately 0.3 million incremental shares in the Company’s total weighted average diluted shares outstanding.


The following table provides details underlying the Company’s earnings per share calculations for the periods indicated (in thousands):
 For the Three Months Ended June 30, For the Six Months Ended June 30,
 2020 2019 2020 2019
Net income attributable to MasTec:       
Net income - basic and diluted (a)
$57,005
 $119,710
 $93,235
 $162,823
Weighted average shares outstanding:       
Weighted average shares outstanding - basic72,045
 75,183
 73,392
 75,088
Dilutive common stock equivalents (b)
732
 564
 743
 573
Weighted average shares outstanding - diluted72,777
 75,747
 74,135
 75,661
 For the Three Months Ended September 30 For the Nine Months Ended September 30
 2017 2016 2017 2016
Net income attributable to MasTec:       
Net income - basic and diluted (a)
$63,752
 $56,277
 $186,390
 $77,672
Weighted average shares outstanding:       
Weighted average shares outstanding - basic80,953
 80,462
 80,859
 80,323
Dilutive common stock equivalents1,433
 1,083
 1,422
 918
Weighted average shares outstanding - diluted82,386
 81,545
 82,281
 81,241
        
Additional information:       
Weighted average anti-dilutive common stock equivalents (b)

 1
 12
 

(a)Calculated as total net income less amounts attributable to non-controlling interests.
(b)RepresentsFor the six month period ended June 30, 2020, there were 88,462 anti-dilutive common stock equivalents as calculated under the treasury stock method.equivalents.
The Company repurchased approximately 3.6 million shares of its common stock during the six month period ended June 30, 2020, as discussed in Note 11 - Equity. The effect of these repurchases on the Company’s weighted average shares outstanding for the six month period ended June 30, 2020 was a reduction of 2.2 million shares, due to the timing of the repurchases.
Note 3 - Goodwill and Other Intangible Assets
The following table provides details ofbalances for goodwill by reportable segment as of SeptemberJune 30, 20172020 (in millions):
 Communications Oil and Gas 
Electrical
Transmission
 Clean Energy and Infrastructure Total Goodwill
Goodwill, gross$547.5
 $493.6
 $150.1
 $152.7
 $1,343.9
Accumulated impairment loss
 (116.5) 
 
 (116.5)
Goodwill, net$547.5
 $377.1
 $150.1
 $152.7
 $1,227.4

 Communications Oil and Gas 
Electrical
Transmission
 Power Generation and Industrial Total Goodwill
Goodwill, gross$462.4
 $461.6
 $149.9
 $137.0
 $1,210.9
Accumulated impairment losses
 (75.4) 
 
 (75.4)
Goodwill, net$462.4
 $386.2
 $149.9
 $137.0
 $1,135.5
For the ninesix month period ended SeptemberJune 30, 2017,2020, goodwill included additions to goodwillof $5.2 million from new business combinations totaled $135.3 million.and a net increase of $1.4 million from measurement period adjustments. Currency translation effects related to goodwill and accumulated impairment losses for the six month period ended June 30, 2020 totaled approximately $9.8$5.6 million of losses and $5.0 million of gains, and $5.4 million of losses, respectively, for the nine month period ended September 30, 2017. For the nine month period ended September 30, 2016, additions to goodwill from accruals of acquisition-related contingent consideration totaled $5.8 million, and currency translation effects related to goodwill and accumulated impairment losses totaled $6.0 million of gains and $3.1 million of losses, respectively.


The following table provides a reconciliation of changes in other intangible assets, net, for the period indicated (in millions):
Other Intangible AssetsOther Intangible Assets
Non-Amortizing Amortizing  Non-Amortizing Amortizing  
Trade Names Pre-Qualifications Customer Relationships and Backlog 
Other (a)
 TotalTrade Names Pre-Qualifications Customer Relationships and Backlog Pre-Qualifications 
Other (a)
 Total
Other intangible assets, gross, as of December 31, 2016$34.5
 $74.6
 $195.1
 $19.1
 $323.3
Other intangible assets, gross, as of December 31, 2019$34.5
 $72.9
 $286.5
 $
 $26.3
 $420.2
Accumulated amortization    (131.9) (11.7) (143.6)    (191.2) 
 (17.5) (208.7)
Other intangible assets, net, as of December 31, 2016$34.5
 $74.6
 $63.2
 $7.4
 $179.7
Other intangible assets, net, as of December 31, 2019$34.5
 $72.9
 $95.3
 $
 $8.8
 $211.5
Additions from new business combinations
 
 24.4
 2.4
 26.8

 
 9.7
 
 0.1
 9.8
Classification changes (b)

 (69.8) 
 69.8
 
 
Measurement period adjustments (c)

 
 (0.2) 
 
 (0.2)
Currency translation adjustments
 (3.1) 0.1
 1.3
 
 (1.7)
Amortization expense    (13.9) (1.1) (15.0)    (12.2) (4.0) (1.0) (17.2)
Currency translation adjustments
 3.4
 0.5
 0.1
 4.0
Other intangible assets, net, as of September 30, 2017$34.5
 $78.0
 $74.2
 $8.8
 $195.5
Other intangible assets, net, as of June 30, 2020$34.5
 $
 $92.7
 $67.1
 $7.9
 $202.2
(a)Consists principally of trade names and non-compete agreements.
(b)In connection with its first quarter assessment of goodwill and indefinite-lived intangible assets, management reassessed the indefinite-life classification of its two pre-qualification intangible assets. Management determined that, based on changes in the assets’ characteristics, including current and expected changes in the customer mix of the associated reporting units, a finite-life classification for these assets was more appropriate. As a result, in the first quarter of 2020, the Company changed the classification of these pre-qualification intangible assets from indefinite-lived to finite-lived and began amortizing them on an accelerated basis, with an estimated remaining weighted average useful life of approximately 12 years.
(c)Represents adjustments to preliminary estimates of fair value within the measurement period of up to one year from the date of acquisition.

Amortization expense associated with intangible assets for2020 Acquisitions. For the three month periods ended September 30, 2017 and 2016 totaled $6.0 million and $5.2 million, respectively, and for the nine month periods ended September 30, 2017 and 2016, totaled $15.0 million and $15.7 million, respectively.
2017 Acquisitions.During the ninesix month period ended SeptemberJune 30, 2017,2020, MasTec completed three4 acquisitions, including, (i)through a wireline/fiber deployment96%-owned consolidated subsidiary, all of the equity interests in a heavy civil infrastructure construction company that is included within the Company’s Clean Energy and Infrastructure segment, and all of the equity interests in a utility service and telecommunications construction contractor whichthat is included inwithin the Company’s Communications segment; (ii)segment. The Company also acquired the assets of 2 entities, 1 that specializes in wireless telecommunications and 1 that specializes in electrical transmission services.


The aggregate purchase price for these entities was composed of approximately $9.8 million in cash, net of cash acquired, with an additional $2.8 million due through 2023, subject to certain indemnification provisions, and a heavy civil construction services company, which is included5-year earn-out liability valued at approximately $7.2 million. Earn-outs are generally payable annually and are recorded within other current and other long-term liabilities in the Company’s Power Generation and Industrial segment, and (iii) an oil and gas pipeline equipment company, whichconsolidated balance sheets. As of June 30, 2020, the range of remaining potential undiscounted Earn-out liabilities for the 2020 acquisitions was estimated to be up to $12 million; however, there is included in the Company’s Oil and Gas segment.no maximum payment amount. Determination of the estimated fair values of the net assets acquired and the estimated earn-outEarn-out liabilities for these acquisitions iswas preliminary as of SeptemberJune 30, 2017, and2020; as a result, further adjustments to management’s preliminarythese estimates may occur.

2019 Acquisitions. During 2019, MasTec completed 6 acquisitions, 1 of which specializes in water infrastructure for pipeline companies and is included within the Company’s Oil and Gas segment, 4 of which are included within the Company’s Communications segment, including a wireline/fiber deployment construction contractor and a telecommunications company specializing in a broad range of end-to-end wireless telecommunications solutions, and 1 of which specializes in construction projects in the power industry and is included in the Company’s Clean Energy and Infrastructure segment. For all but one of these acquisitions, the Company acquired all of the equity interests in the related entities. For the telecommunications company specializing in wireless telecommunications solutions, the Company acquired 96% of the entity’s equity interests, with the obligation to acquire the balance over time.
The following table summarizesaggregate purchase price for these entities, as adjusted, was composed of approximately $175.9 million in cash, net of cash acquired, plus earn-out liabilities and a mandatorily redeemable non-controlling interest valued at approximately $22.3 million and $17.8 million, respectively. The Company refers to its traditional earn-out arrangements and the mandatorily redeemable non-controlling interest collectively as “Earn-outs.” Earn-outs for the 2019 acquisitions have terms ranging from 3 to 5 years. As of June 30, 2020, the range of remaining potential undiscounted Earn-out liabilities for the 2019 acquisitions was estimated to be between $2 million and $72 million; however, there is no maximum payment amount. Determination of the estimated fair values of consideration paid and identifiablethe net assets acquired and the estimated Earn-out liabilities assumedfor these acquisitions was preliminary as of the respective dates of acquisition (in millions).June 30, 2020; as a result, further adjustments to these estimates may occur.
Acquisition consideration:2017
Cash$118.8
Fair value of contingent consideration (earn-out liability)89.6
Total consideration transferred$208.4
Identifiable assets acquired and liabilities assumed: 
Current assets, primarily composed of accounts receivable and $2.8 million of cash acquired$42.7
Property and equipment56.9
Amortizing intangible assets26.8
Other long-term assets0.5
Current liabilities, including current portion of capital lease obligations and long-term debt(28.4)
Long-term debt, including capital lease obligations(9.9)
Deferred income taxes(15.5)
Total identifiable net assets$73.1
Goodwill$135.3
Total net assets acquired, including goodwill$208.4

Amortizing intangible assets related to the 2017 acquisitions are primarily composed of customer relationships, backlogPro Forma Financial Information and other amortizing intangible assets, which had weighted average lives of approximately 11 years, 4 years and 7 years, respectively, and 10 years in total, and will be amortized in a manner consistent with the pattern in which the related benefits are expected to be consumed. The goodwill balances for the respective acquisitions represent the estimated value of each acquired company’s geographic presence in key markets, their assembled workforce, and management team industry-specific project management expertise, as well as synergies expected to be achieved from the combined operations of the acquired companies and MasTec. Approximately $75 million of the acquired goodwill balance as of September 30, 2017 is expected to be tax deductible.

The contingent consideration included in the table above equals the acquired companies’ earnings before interest, taxes, depreciation and amortization (“EBITDA”) above certain thresholds, if applicable, for a period of five years, as set forth in the respective purchase agreements, which amounts are payable annually. The fair values of the earn-out liabilities were estimated using income approaches such as discounted cash flows or option pricing models and incorporate significant inputs not observable in the market. Key assumptions in the estimated valuations include the discount rate and probability-weighted EBITDA projections. Significant changes in any of these assumptions could result in a significantly higher or lower potential earn-out liability.


Acquisition Results. For the three and nine month periods ended SeptemberJune 30, 2017,2020 and 2019, unaudited supplemental pro forma revenue totaled approximately $1,955.8 million$1.6 billion and $5,077.4 million,$2.0 billion, respectively, and unaudited supplemental pro forma net income totaled approximately $64.4$59.4 million and $192.0$126.2 million, respectively. For the three and ninesix month periods ended SeptemberJune 30, 2016,2020 and 2019, unaudited supplemental pro forma revenue totaled approximately $1,634.5 million$3.0 billion and $3,934.6 million,$3.6 billion, respectively, and unaudited supplemental pro forma net income totaled approximately $59.0$95.0 million and $81.5$173.3 million, respectively.
The above indicated unaudited pro forma financial results, which represent the results of operations of the companies acquired as if the acquired companies had been consolidated as of January 1, 2016, are provided for illustrative purposes only and do not purport to be indicative of the actual results that would have been achieved by the combined companies for the periods indicated, or of the results that may be achieved by the combined companies in the future. The unaudited supplemental pro forma financial results have been prepared by adjusting the historical results of MasTec to include the historical results of the acquired businesses described above, and then adjusted (i) to remove acquisition costs; (ii) to increase amortization expense resulting from the acquired intangible assets; (iii) to increase interest expense as a result of the cash consideration paid; (iv) to reduce interest expense from debt repaid upon acquisition; and (iv) to eliminate the effect of intercompany transactions. Additionally, the unaudited supplemental pro forma financial results do not include adjustments to reflect other cost savings or synergies that may have resulted from these acquisitions. Future results may vary significantly due to future events and transactions, as well as other factors, many of which are beyond MasTec’s control.
For the three and ninesix month periods ended SeptemberJune 30, 2017, acquisition-related results included in2020, the Company’s consolidated results of operations included acquisition-related revenue of approximately $62.2$63.5 million and $96.1$113.0 million, respectively, and included acquisition-related net income of approximately $3.2$0.4 million and $4.7acquisition-related net losses of approximately $0.5 million, respectively.respectively, based on the Company’s consolidated effective tax rates. For the three and six month periods ended June 30, 2019, the Company’s consolidated results of operations included acquisition-related revenue of approximately $35.5 million and $75.1 million, respectively, and included acquisition-related net losses of approximately $1.4 million and $7.4 million, respectively, based on the Company’s consolidated effective tax rates. These acquisition-related results do not include the effects of acquisition costs or interest expense associated with consideration paid for the related acquisitions.
Note 4 – Fair Value of Financial Instruments
The Company’s financial instruments include cash and cash equivalents, accounts and notes receivable, cash collateral deposited with insurance carriers, life insurance assets, costequity investments, investments in convertible debt securities and equity method investments, stock warrants, deferred compensation plan assets and liabilities, accounts payable and other current liabilities, acquisition-related contingent consideration, certain intangible assets and liabilities, including off-market contracts,mandatorily redeemable non-controlling interests and debt obligations.
Fair value is the price that would be received to sell an asset or the amount paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The fair value guidance establishes a valuation hierarchy, which requires maximizing the use of observable inputs when measuring fair value. The three levels of inputs that may be used are: (i) Level 1 - quoted market prices in active markets for identical assets or liabilities; (ii) Level 2 - observable market-based inputs or other observable inputs; and (iii) Level 3 - significant unobservable inputs that cannot be corroborated by observable market data, which are generally determined using valuation models incorporating management estimates of market participant assumptions. In instances in which the inputs used to measure fair value fall into different levels of the fair value hierarchy, the fair value measurement classification is determined based on the lowest level input that is significant to the fair value measurement in its entirety. Management’s assessment of the significance of a particular item to the fair value measurement in its entirety requires judgment, including the
Acquisition-Related Contingent Consideration and Other Liabilities
Acquisition-related contingent consideration of inputs specific to the asset or liability.
Fair values of financial instruments are estimated using public market prices, quotes from financial institutions and other available information. Due to their short-term maturity, the carrying amountsliabilities is composed of cash and cash equivalents, accounts receivable, accounts payable and other current liabilities approximate their fair values. Management believes the carrying values of notes and other receivables, cash collateral deposited with insurance carriers, deferred compensation plan assets and liabilities and outstanding balances on its credit facilities approximate their fair values.
Assets and Liabilities Measured at Fair Value on a Recurring Basis
As of September 30, 2017 and December 31, 2016, financial instruments required to be measured at fair value on a recurring basis consisted primarily of acquisition-related contingent consideration,Earn-outs, which representsrepresent the estimated fair value of future earn-outsamounts payable for acquisitionsbusinesses that are contingent upon the acquired business achieving certain levels of businesses (“ASC 805 contingent consideration”). ASC 805 contingent consideration is based on management estimates and entity-specific assumptions and is evaluated on an ongoing basis.earnings in the future. As of SeptemberJune 30, 20172020 and December 31, 2016,2019, the estimated fair value of the Company’s ASC 805 contingent considerationEarn-out liabilities totaled $104.9$132.8 million and $45.8$173.2 million, respectively, of which $18.9$47.1 million and $21.8$54.1 million, respectively, was included within other current liabilities. The fair valuevalues of the Company’s ASC 805 contingent consideration isEarn-out liabilities are estimated using income approaches such as discounted cash flows or option pricing models, and incorporatesboth of which incorporate significant inputs not observable in the market.market (Level 3 inputs), including management’s estimates and entity-specific assumptions, and are evaluated on an ongoing basis. Key assumptions include the discount rate, which ranged from 12.0% to 24.7%, with a weighted average rate of 15.3% based on the relative fair value of each instrument as of June 30, 2020, and probability-weighted EBITDA projections.projections of earnings before interest, taxes, depreciation and amortization (“EBITDA”). Significant changes in any of these assumptions could result in a significantly higher or lower potential earn-out liability.Earn-out liabilities. The ultimate payout of Earn-out liabilities will be based on actual results achieved. As of SeptemberJune 30, 2017,2020, the range of potential undiscounted earn-outEarn-out liabilities was estimated to be between $15$20 million and $170$206 million; however, there is no maximum payment amount.
ASC 805 contingent considerationEarn-out activity consists primarily of additions from new business combinations, payments of earn-out liabilities,combinations; changes in the expected fair value of future earn-out obligations,payment obligations; and payments. Measurement period adjustments for Earn-out liabilities, which are fair value adjustments relating to new information obtained about the facts and circumstances existing as of the date of acquisition for a period of up to one year, are recorded to goodwill. Other revisions to the expected fair values of the Company’s traditional earn-out liabilities denominated in foreign currencies, translation gains or losses. Fair value adjustments are recorded withinreflected as other income or expense, as appropriate, and, foreign currency translation activity isfor the mandatorily


redeemable non-controlling interest, are recorded as interest expense, net. Earn-out payments, to the extent they relate to estimated liabilities as of the date of acquisition, are reflected within financing activities in the consolidated statements of cash flows. Payments in excess of acquisition date liabilities are classified within operating activities.
Additions to acquisition-related contingent consideration and other comprehensive income or loss, as appropriate. Forliabilities from new business combinations totaled $7.2 million for both the three and ninesix month periods ended SeptemberJune 30, 2017,2020, and for the three and six month periods ended June 30, 2019, additions from new business combinations totaled $64.6$1.0 million and $89.6$16.2 million, respectively. There were no payments of ASC 805 contingent consideration0 measurement period adjustments for the three month period ended SeptemberJune 30, 2017,2020, and paymentsmeasurement period adjustments for the six month period ended June 30, 2020 totaled $18.8an increase of approximately $1.1 million, and related to a business in the Company’s Communications segment. There were 0 measurement period adjustments for the three or six month periods ended June 30, 2019. Fair value adjustments, net, were de minimis for the three month period ended June 30, 2020, and totaled a net increase of approximately $1.7 million for the ninesix month period ended SeptemberJune 30, 2017. For2020, and related to businesses in the Company’s Oil and Gas and Communications segments. Fair value adjustments, including those related to finalization of completed earn-out arrangements, totaled a net increase of approximately $29.2 million and $36.5 million for the three and ninesix month periods ended SeptemberJune 30, 2016,2019, respectively, and related to businesses in the Company’s Oil and Gas and Communications segments. Earn-out payments totaled $5.3$50.4 million and $15.8 million, respectively. Foreign currency translation activity was de minimis for both the three and ninesix month periods ended SeptemberJune 30, 20172020, and September 30, 2016. The Company recognized reductions in the expected fair value of future earn-out obligations totaling $3.0 million and $11.6totaled $30.0 million for certain acquired businesses in the Communications and Electrical Transmission segments forboth the three and ninesix month periods ended SeptemberJune 30, 2017, respectively, and, during the first quarter2019.
Equity Investments
The Company’s equity investments as of 2016, the Company recognized a net reduction in the expected fair value of future earn-out obligations of $2.3 million for certain ofJune 30, 2020 include: (i) the Company’s western Canadian oil and gas businesses.


Assets and Liabilities Measured at Fair Value on a Non-Recurring Basis
Assets and liabilities recognized or disclosed at fair value on a non-recurring basis, for which remeasurement occurs in the event of an impairment or other measurement event, if applicable, include items such as cost and equity method investments, life insurance assets, long-lived assets, goodwill, other intangible assets and liabilities and debt.
As of both September 30, 2017 and December 31, 2016, the gross carrying amount of the Company’s 4.875% senior notes due 2023 (the “4.875% Senior Notes”) totaled $400 million. As of September 30, 2017 and December 31, 2016, the estimated fair value of the Company’s 4.875% Senior Notes, based on quoted market prices in active markets, a Level 1 input, totaled $407.0 million and $388.0 million, respectively.
Cost and Equity Investees. The Company’s cost and equity investees as of September 30, 2017 are primarily composed of: (i) the Company’s33% equity interests in Trans-Pecos Pipeline, LLC (“TPP”) and Comanche Trail Pipeline, LLC (“CTP,” and together with TPP, the “Waha JVs”); (ii) the Company’s interests in a pre-acquisition, which are accounted for as equity method investment of Pacer Construction Holdings Corporation and its affiliated operating companies (collectively, “Pacer”); (iii)investments; (ii) a $15 million cost investment in Cross Country Infrastructure Services, Inc. (“CCI,” previously, Cross Country Pipeline Supply, Inc.CCI”); (iv)(iii) the Company’s interests in itscertain proportionately consolidated non-controlled contractual joint ventures; (v)(iv) the Company’s equity interests in American Virtual Cloud Technologies, Inc., or “AVCT” (formerly named Pensare Acquisition Corp. (“Pensare”); and (vi)(v) certain other costequity investments.
Investment Arrangements. From time to time, the Company may participate in selected investment or strategic arrangements, including equity interests in various business entities and participation in contractual joint ventures, some of which may involve the extension of loans or other types of financing arrangements. As of June 30, 2020, the Company determined that certain of its investment arrangements were variable interest entities (“VIEs”). Except for one individually insignificant VIE, the Company does not have the power to direct the primary activities that most significantly impact the economic performance of its VIEs nor is it the primary beneficiary. Accordingly, except for the previously mentioned VIE, the Company’s VIEs are not consolidated.
Equity investments, other than those accounted for as equity method investments. See Note 15 - Related Party Transactions.
Theinvestments or those that are proportionately consolidated, are measured at fair value if their fair values are readily determinable. Equity investments that do not have readily determinable fair values are measured at cost, adjusted for changes from observable market transactions, less impairment (“adjusted cost basis”). As of June 30, 2020 and December 31, 2019, the aggregate carrying value of the Company’s equity investments totaled approximately $197 million and $196 million, respectively, including approximately $17 million and $18 million of equity investments measured on an adjusted cost basis as of June 30, 2020 and December 31, 2019, respectively. There were 0 material changes in the fair values of, or impairments related to, these investments during either of the Company’s cost and equity method investments are not readily observable. The Company is not aware of eventssix month periods ended June 30, 2020 or changes in circumstances that would have a significant adverse effect on the carrying values of its cost and/or equity investments as of September 30, 2017 or December 31, 2016. Cumulative undistributed earnings from equity method investees totaled $10.6 million as of September 30, 2017.2019.
The Waha JVs.JVs. The Waha JVs own and operate two2 pipelines and a header system that transport natural gas to the Mexican border for export. These pipelines commenced operations in the first half of 2017. There were no equity or other contributions to these joint ventures for the three month period ended September 30, 2017, and for the nine month period ended September 30, 2017, equity and other contributions totaled $73.3 million. As collateral for its equity commitments in the Waha JVs, the Company has issued letters of credit (the “Equity LC Amount”), of which $19 million and $91 million, respectively, were outstanding as of September 30, 2017 and December 31, 2016. Equity in earnings related to the Company’s proportionate share of income from the Waha JVs, which is included within the Company’s Other segment, totaled approximately $7.4$7.6 million and $15.1$6.6 million for the three and nine month periods ended SeptemberJune 30, 2017,2020 and 2019, respectively, and totaled $15.3 million and $12.9 million for the six month periods ended June 30, 2020 and 2019, respectively. Equity inCumulative undistributed earnings from the Waha JVs, which represents cumulative equity in earnings for the nineWaha JVs less distributions of earnings, totaled $55.4 million as of June 30, 2020. Distributions of earnings from the Waha JVs, which are included within operating cash flows, totaled $5.2 million and $2.1 million for the three month periodperiods ended SeptemberJune 30, 2016 was de minimis.2020 and 2019, respectively, and totaled $7.9 million and $6.0 million for the six month periods ended June 30, 2020 and 2019, respectively. The Company’s net investment in the Waha JVs, which differs from its proportionate share of the net assets of the Waha JVs due primarily to capitalized investment costs, totaled approximately $157 million and $174 million as of June 30, 2020 and December 31, 2019, respectively.
The Waha JVs are party to separate non-recourse financing facilities, each of which are secured by pledges of the equity interests in the respective entities, as well as a first lien security interest over virtually all of their assets. The Waha JVs are also party to certain interest rate swaps.swaps, which are accounted for as qualifying cash flow hedges. The Company reflects its proportionate share of any unrealized fair market value gains or losses from fluctuations in interest rates associated with these swaps within other comprehensive income or loss, as appropriate. For the three and six month periodperiods ended SeptemberJune 30, 2017,2020, the Company’s proportionate share of unrecognized unrealized activity on these interest rate swaps was a gaintotaled losses of approximately $1.3 million or $0.8 million, net of tax, and for the nine month period, this activity was a loss of approximately $2.1$1.7 million, or $1.3 million, net of tax.tax, and $32.0 million, or $24.3 million, net of tax, respectively. For the three and ninesix month periods ended SeptemberJune 30, 2016,2019, the Company’s proportionate share of unrecognized unrealized activity on these interest rate swaps was a losstotaled losses of approximately $0.6$11.6 million, or $8.7 million, net of tax, and $21.1$18.8 million, respectively, or $0.3 million and $12.9$14.2 million, net of tax, respectively.
Certain subsidiaries of MasTec have provided pipeline construction services to the Waha JVs. For the three and nine month periods ended September 30, 2017, revenue recognized in connection with work performed for the Waha JVs, including intercompany eliminations, totaled $3.6 million and $255.2 million, respectively, and for the three and nine month periods ended September 30, 2016, totaled $80.9 million and $142.8 million, respectively. As of September 30, 2017 and December 31, 2016, related receivables, including retainage, net of BIEC, totaled $52.2 million and $71.2 million, respectively. As of September 30, 2017 and December 31, 2016, the Company’s net investment in the Waha JVs represented an asset totaling approximately $115 million and $6 million, respectively. Other Investments. The Company’s net investmentinvestments in AVCT (collectively, the Waha JVs differs from its proportionate share of the net assets of the Waha JVs due to capitalized investment costs as well as the effect of intercompany eliminations.
Other investments. In connection with the 2014 acquisition of Pacer, the Company acquired equity interests in two joint ventures. There are no remaining amounts expected to be advanced in connection with these investments, and“AVCT securities”) as of March 2016, all related project work had been completed. In the first quarterJune 30, 2020 consist of: (i) approximately 1.7 million shares of 2016, revenue recognized by Pacer on behalf of these entities totaled $0.6 million. One of these entities was liquidated in 2016, and the second, which is in the final stages of liquidation, is being managed by a receiver to assist with the orderly wind-down of its operations. In the first quarter of 2016, $3.6 million of income was recognized related to changes in expected recoveries from these investments. The Company received $12.1 million of proceeds from the receiver in the first quarter of 2017. The remaining investment, for which the Company now has minimal involvement, is reviewed regularly by corporate management for potential changes in expected recovery estimates, and, during the second quarter of 2017, the Company recorded $5.8 million of expense related to changes in expected recovery amounts from this investment. The aggregate net carrying value of this investment, which represents expected recoveries under the receivership arrangement, totaled $14.8 million and $31.4 million as of September 30, 2017 and December 31, 2016, respectively, which amounts are included within other current assets.

During the third quarter of 2017, the Company paid approximately $2.0 million for approximately 4% of theAVCT common stock of Pensare and(the “AVCT shares”); (ii) warrants to purchase 2.0 million shares of PensareAVCT common stock which is a special purpose acquisition company focusing on transactions in the telecommunications industry. The shares of common stock purchased by MasTec are not transferable or salable until one year after Pensare successfully completes a business combination transaction, with limited exceptions, as specified in the agreement. The warrants purchased by MasTec are exercisable at a purchase price of $11.50 per share after Pensare successfully completes a business combination. Both(the “initial warrants”); (iii) warrants to purchase 0.3 million shares of AVCT common stock at $0.01 per share (the “AVCT warrants”); and (iv) approximately $3.0 million in principal amount of AVCT Series A convertible debentures (the “AVCT convertible debentures”), convertible into AVCT common stock at $3.45 per share, subject to customary anti-dilution adjustments. All of the warrants and shares expire and/or are effectively forfeitable if Pensare does not successfully complete a business combination by February 1, 2019. The warrants, which are derivative financial instruments, and the shares, which are a cost method investment,AVCT securities are included within other long-term assets in the Company’s consolidated financial statements asstatements. As of SeptemberJune 30, 2017. The fair value2020 and December 31, 2019, the Company’s ownership interest in AVCT’s common stock represented by the AVCT shares totaled approximately 9% and 21%, respectively, and its aggregate beneficial ownership interest, assuming the exercise and conversion of theall exercisable warrants as determined based on Level 3 inputs, approximated their cost basis as of September 30, 2017. The fair value of the shares is not readily determinable due to the nature of the restrictions.and convertible debt into AVCT common stock, totaled approximately 21% for both periods. José R. Mas, MasTec’s Chief Executive Officer, iswas a director of Pensare.AVCT through the end of March 2020.  The Company does not have the ability to exert significant influence over the operating and financial policies of AVCT.


The Company paid $2.0 million for the AVCT shares and initial warrants in 2017. The AVCT shares are not transferable or salable until April 7, 2021, with limited exceptions. The initial warrants are exercisable at any time from May 7, 2020, until the earlier to occur of April 7, 2025 and the liquidation of AVCT, subject to extension. In April 2020, concurrent with the completion of AVCT’s business combination with Stratos Management Systems, Inc., MasTec invested $3.0 million for the AVCT warrants and AVCT convertible debentures. The AVCT warrants are exercisable at any time from April 7, 2020 through April 7, 2025. The AVCT convertible debentures have a stated annual interest rate of 10%, which is paid in-kind on a quarterly basis until maturity. Maturity will occur upon the earlier of MasTec’s demand, which may occur on or after October 7, 2022, or upon a change of control of AVCT. The AVCT convertible debentures may be converted in whole or in part at any time from April 7, 2020 until full payment thereof, subject to mandatory conversion of the convertible debentures, pursuant to the terms thereof.
As of June 30, 2020, the fair value of the Company’s issued AVCT shares approximated $5 million, which was determined based on the market price of identical securities, adjusted for the restrictions on sale, a Level 3 input. The initial warrants and the AVCT warrants, for which the aggregate fair value was not material as of June 30, 2020, are derivative financial instruments. The AVCT convertible debentures are available-for-sale securities. Interest on the AVCT convertible debentures is recognized in earnings and changes in fair value are recognized in other comprehensive income or loss, as appropriate, neither of which was material for the three month period ended June 30, 2020. As of December 31, 2019, the AVCT shares were measured on an adjusted cost basis as their fair value was not readily determinable. The aggregate carrying value of the Company’s investment in AVCT as of December 31, 2019, including the AVCT shares and initial warrants, was approximately $2 million. For the three month period ended June 30, 2020, following completion of the AVCT transactions, the Company recorded a net fair value measurement gain on the AVCT securities within other income totaling approximately $3.8 million, primarily related to the AVCT shares.
The Company has equity interests in 3 telecommunications entities that provide certain services to MasTec. For the three and six month periods ended June 30, 2020, expense recognized in connection with these arrangements totaled $3.6 million and $6.3 million, respectively, and related amounts payable were $0.4 million as of June 30, 2020.
Senior Notes
As of both June 30, 2020 and December 31, 2019, the gross carrying amount of the Company’s 4.875% senior notes due March 15, 2023 (the “4.875% Senior Notes”), which are measured at fair value on a non-recurring basis, totaled $400 million. As of June 30, 2020 and December 31, 2019, the estimated fair value of the 4.875% Senior Notes, based on Level 1 inputs, totaled $396.0 million and $404.5 million, respectively.



Note 5 - Accounts Receivable, Net of Allowance, and Contract Assets and Liabilities
The following table provides details of accounts receivable, net of allowance, and contract assets (together, “accounts receivable, net”) as of the dates indicated (in millions):
 June 30,
2020
 December 31,
2019
Contract billings$949.9
 $860.4
Less allowance(22.1) (10.1)
Accounts receivable, net of allowance$927.8
 $850.3
    
Retainage290.1
 345.2
Unbilled receivables675.8
 679.4
Contract assets$965.9
 $1,024.6

 September 30,
2017
 December 31,
2016
Contract billings$626.7
 $564.2
Retainage287.6
 268.6
Costs and earnings in excess of billings629.5
 331.6
Accounts receivable, gross$1,543.8
 $1,164.4
Less allowance for doubtful accounts(9.0) (8.4)
Accounts receivable, net$1,534.8
 $1,156.0

Contract billings represent the amount of performance obligations that have been billed but not yet collected. Contract assets consist of unbilled receivables and retainage. Unbilled receivables represent the estimated value of unbilled work for projects with performance obligations recognized over time. Retainage whichrepresents a portion of the contract amount that has been billed, but is not due until completion of performance and acceptance by customers, is expectedfor which the contract allows the customer to be collected within one year. Receivables expected to be collected beyond one year are recorded within other long-term assets. Provisions for doubtful accounts for eachretain a portion of the billed amount until final contract settlement (generally, from 5% to 10% of contract billings). For the six month period ended June 30, 2020, provisions for credit losses totaled $12.3 million and include potential credit losses resulting from current economic uncertainty, as compared with credit losses of $0.9 million for the six month period ended June 30, 2019. Impairment losses on contract assets were not material in either period.
Contract liabilities consist primarily of deferred revenue. Under certain contracts, the Company may be entitled to invoice the customer and receive payments in advance of performing the related contract work. In those instances, the Company recognizes a liability for advance billings in excess of revenue recognized, which is referred to as deferred revenue. Contract liabilities also include the amount of any accrued project losses. Total contract liabilities, including accrued project losses, totaled approximately $338.2 million and $206.2 million as of June 30, 2020 and December 31, 2019, respectively, of which deferred revenue comprised approximately $316.7 million and $184.1 million, respectively. The increase in deferred revenue was primarily driven by timing of billings for projects in the Company’s Oil and Gas and Clean Energy and Infrastructure segments. For the three and six month periods ended SeptemberJune 30, 2017 and 2016 totaled $0.42020, the Company recognized revenue of approximately $23.7 million and for$129.3 million, respectively, related to amounts that were included in deferred revenue as of December 31, 2019, resulting primarily from the nine month periods ended September 30, 2017 and 2016, totaled $1.1 million and $2.0 million, respectively.

advancement of physical progress on the related projects during the period.
The Company is party to non-recourse financing arrangements in the ordinary course of business, under which certain receivables are purchased bysettled with the customer’s bank in return for a nominal fee. TheseDiscount charges related to these arrangements, under which amounts can vary based on levels of activity and changes in customer payment terms, improve the collection cycle time of the related receivables. The discount charge, which isare included within interest expense, net, totaled approximately $2.1$1.4 million and $0.8$2.8 million respectively, for the three month periods ended SeptemberJune 30, 20172020 and 2016,2019, respectively, and totaled approximately $4.7$3.2 million and $1.7$5.7 million respectively, for the ninesix month periods ended SeptemberJune 30, 20172020 and 2016.2019, respectively.


Note 6 - Property and Equipment, Net
The following table provides details of property and equipment, net, including property and equipment held under capitalfinance leases as of the dates indicated (in millions):
 June 30,
2020
 December 31,
2019
Land$6.0
 $4.9
Buildings and leasehold improvements40.4
 35.8
Machinery and equipment1,776.7
 1,659.4
Office furniture and equipment211.1
 197.3
Construction in progress24.9
 26.1
Total property and equipment$2,059.1
 $1,923.5
Less accumulated depreciation and amortization(1,086.9) (1,017.7)
Property and equipment, net$972.2
 $905.8

 September 30,
2017
 December 31,
2016
Land$4.6
 $4.6
Buildings and leasehold improvements25.7
 24.2
Machinery and equipment1,237.3
 997.8
Office furniture and equipment149.6
 146.1
Construction in progress8.9
 9.5
Total property and equipment$1,426.1
 $1,182.2
Less accumulated depreciation and amortization(734.7) (633.1)
Property and equipment, net$691.4
 $549.1
The gross amount of capitalized internal-use software, which is included within office furniture and equipment, totaled $108.7$146.5 million and $107.8$138.2 million as of SeptemberJune 30, 20172020 and December 31, 2016,2019, respectively. Capitalized internal-use software, net of accumulated amortization, totaled $24.8$33.1 million and $30.9$31.5 million as of SeptemberJune 30, 20172020 and December 31, 2016,2019, respectively. Depreciation and amortization expense associated with property and equipment forThe effects of accrued capital expenditures are excluded from the three month periods ended September 30, 2017 and 2016 totaled $44.1 million and $37.4 million, respectively, and totaled $123.4 million and $106.5 million for the nine month periods ended September 30, 2017 and 2016, respectively.Company’s consolidated statements of cash flows given their non-cash nature.



Note 7 - Debt
The following table provides details of the carrying values of debt as of the dates indicated (in millions):
Description Maturity Date June 30,
2020
 December 31,
2019
Senior secured credit facility: 
September 19, 2024
    
Revolving loans $166.8
 $339.2
Term loan 400.0
 400.0
4.875% Senior Notes 
March 15, 2023
 400.0
 400.0
Finance lease and other obligations 286.6
 305.6
Total debt obligations $1,253.4
 $1,444.8
Less unamortized deferred financing costs (10.9) (12.4)
Total debt, net of deferred financing costs $1,242.5
 $1,432.4
Current portion of long-term debt 126.7
 118.4
Long-term debt $1,115.8
 $1,314.0
Description Maturity Date September 30,
2017
 December 31,
2016
Senior secured credit facility: February 22, 2022    
Revolving loans $300.6
 $279.9
Term loan 400.0
 237.5
4.875% Senior Notes March 15, 2023 400.0
 400.0
Capital lease obligations, weighted average interest rate of 3.5% In installments through September 1, 2022 179.9
 98.6
Notes payable and other debt obligations Varies 12.1
 19.8
Total long-term debt obligations $1,292.6
 $1,035.8
Less unamortized deferred financing costs (13.8) (9.8)
Total debt, net of deferred financing costs $1,278.8
 $1,026.0
Current portion of long-term debt 86.5
 64.6
Long-term debt $1,192.3
 $961.4

Senior Secured Credit Facility
The Company has aCompany’s senior secured credit facility (the “Credit Facility”), which was amended and restated on February 22, 2017. The Company refers to its amended and restated credit facility as the “2017 Credit Facility,” and to its previous credit facility as the “2016 Credit Facility.” The 2017 Credit Facility increased the Company’s has aggregate borrowing commitments fromtotaling approximately $1.2$1.75 billion to $1.5 billion, which amount isas of June 30, 2020, composed of $1.1$1.35 billion of revolving commitments and a term loan in the aggregate principal amount of approximately $400 million. The amended and restated credit facility also extended the Credit Facility’s maturity date to February 22, 2022. As of September 30, 2017, term loans in the aggregate principal amount of $400 million were drawn under the 2017 Credit Facility. The term loan is subject to amortization in quarterly principal installments that commenceof $2.5 million commencing in December 2017, which as of September 30, 2017, amounted to $3.1 million,2020, which amount iswill increase to $5.0 million commencing in December 2021. Quarterly principal installments on the term loan are subject to adjustment, for additional term loans and, if applicable, for certain prepayments. As of December 31, 2016, term loans in the aggregate principal amount of $238 million were outstanding.
The 2017 Credit Facility also increased the amount the Company can borrow either in Canadian dollars and/or Mexican pesos up to an aggregate equivalent amount of $300 million. The maximum amount available for letters of credit under the 2017 Credit Facility is $650 million, of which up to $200 million can be denominated in either Canadian dollars and/or Mexican pesos. The Credit Facility also provides for swing line loans of up to $75 million, and, subject to certain conditions, the Company has the option to increase revolving commitments and/or establish additional term loan tranches up to an aggregate amount of $250 million. Subject to the terms and conditions described in the Credit Facility, these additional term loan tranches may rank equal or junior in respect of right of payment and/or collateral to the Credit Facility, and may have terms and pricing that differ from the 2017 Credit Facility. Borrowings under the Credit Facility are used for working capital requirements, capital expenditures and other corporate purposes, including investments in equity or other investees, potential acquisitions or other strategic arrangements, and the repurchase or prepayment of indebtedness.
Outstanding revolving loans and the term loan under the Credit Facility bear interest, at the Company’s option, at a rate equal to either (a) a Eurocurrency Rate, as defined in the 2017 Credit Facility, plus a margin of 1.25% to 2.00% (under the 2016 Credit Facility, the margin was from 1.00% to 2.00%), or (b) a Base Rate, as defined in the 2017 Credit Facility, plus a margin of 0.25% to 1.00% (under the 2016 Credit Facility, the margin was from 0.00% to 1.00%). The Base Rate equals the highest of (i) the Federal Funds Rate, as defined in the Credit Facility, plus 0.50%, (ii) Bank of America’s prime rate, and (iii) the Eurocurrency Rate plus 1.00%. Financial standby letters of credit and commercial letters of credit issued under the 2017 Credit Facility are subject to a letter of credit fee of 1.25% to 2.00% (under the 2016 Credit Facility, the letter of credit fee was from 1.00% to 2.00%), and performance standby letters of credit are subject to a letter of credit fee of 0.50% to 1.00% under the Credit Facility. The Company must also pay a commitment fee to the lenders of 0.20% to 0.40% on any unused availability under the Credit Facility. In each of the foregoing cases, the applicable margin or fee is based on the Company’s Consolidated Leverage Ratio, as defined in the Credit Facility, as of the then most recent fiscal quarter.
As of SeptemberJune 30, 20172020 and December 31, 2016,2019, outstanding revolving loans, which included $171$111 million and $119$138 million, respectively, of borrowings denominated in foreign currencies, accrued interest at weighted average rates of approximately 2.96%2.38% and 3.71%3.50% per annum, respectively. The term loan accrued interest at a raterates of 2.86%1.43% and 2.77%3.05% as of SeptemberJune 30, 20172020 and December 31, 2016,2019, respectively. Letters of credit of approximately $189.1$140.1 million and $314.3$98.0 million were issued as of SeptemberJune 30, 20172020 and December 31, 2016,2019, respectively. As of Septemberboth June 30, 20172020 and December 31, 2016, letters2019, letter of credit fees accrued at 0.750% and 1.00%0.375% per annum respectively, for performance standby letters of credit and at 1.625% and 2.00%1.25% per annum respectively, for financial standby letters of credit. Outstanding letters of credit mature at various dates and most have automatic renewal provisions, subject to prior notice of cancellation. As of SeptemberJune 30, 20172020 and December 31, 2016,2019, availability for revolving loans totaled $610.3$1,043.1 million and $405.9$912.8 million, respectively, or up to $460.9$509.9 million and $335.7$552.0 million, respectively, for new letters of credit. Revolving loan borrowing capacity included $129.4$189.2 million and $80.9$162.4 million of availability in either Canadian dollars or Mexican pesos as of SeptemberJune 30, 20172020 and December 31, 2016,2019, respectively. The unused facility fee as of Septemberboth June 30, 20172020 and December 31, 20162019 accrued at a rate of 0.30% and 0.40%, respectively.0.20%.


The Credit Facility is guaranteed by certain subsidiaries of the Company (the “Guarantor Subsidiaries”) and the obligations under the Credit Facility are secured by substantially all of the Company’s and the Guarantor Subsidiaries’ respective assets, subject to certain exceptions. The Credit Facility requires that the Company maintain a Maximum Consolidated Leverage Ratio, as defined in the Credit Facility, of 3.50 (subject to the Acquisition Adjustment described below). The Credit Facility also requires that the Company maintain a Minimum Consolidated Interest Coverage Ratio, as defined in the Credit Facility, of 3.00. The Credit Facility provides that, for purposes of calculating the Consolidated Leverage Ratio, certain cash charges may be added back to the calculation of Consolidated EBITDA, as defined in the Credit Facility, and funded indebtedness excludes undrawn standby performance letters of credit. Additionally, notwithstanding the terms discussed above, subject to certain conditions, if a permitted acquisition or series of permitted acquisitions having consideration exceeding $50 million occurs during a fiscal quarter, the Consolidated Leverage Ratio may be temporarily increased to up to 3.75 during such fiscal quarter and the subsequent two fiscal quarters. Such right may be exercised no more than two times during the term of the Credit Facility. Subject to customary exceptions, the Credit Facility limits the borrowers’ and the Guarantor Subsidiaries’ ability to engage in certain activities, including acquisitions, mergers and consolidations, debt incurrence, investments, capital expenditures, asset sales, debt prepayments, lien incurrence and the making of distributions or repurchases of capital stock. However, distributions payable solely in capital stock are permitted. The Credit Facility provides for customary events of default and carries cross-default provisions with the Company’s other significant debt instruments, including the Company’s indemnity agreement with its surety provider, as well as customary remedies, including the acceleration of repayment of outstanding amounts and other remedies with respect to the collateral securing the Credit Facility obligations.
Other Credit Facilities. The Company has other credit facilities that support the working capital requirements of its foreign operations. Borrowings under theseoperations and certain letter of credit facilities, which have varying datesissuances. As of maturity and are generally renewed on an annual basis, are denominated in Canadian dollars. As Septemberboth June 30, 20172020 and December 31, 2016, maximum borrowing capacity totaled Canadian $20.02019, there were 0 borrowings under the Company’s other credit facilities. Additionally, the Company has a credit facility under which it may issue up to $50.0 million and $40.0 million, respectively, or approximately $16.0 million and $29.8 million, respectively.of performance standby letters of credit.  As of SeptemberJune 30, 20172020 and December 31, 2016, outstanding borrowings2019, letters of credit issued under this facility totaled approximately $5.4$18.2 million and $13.4$17.1 million, respectively, and accrued interestfees at a weighted average rate of approximately 4.0% 0.50%


and 3.6%,0.40% per annum, respectively. Outstanding borrowings that are not renewed are repaid with borrowings under the Company’s senior secured credit facility. Accordingly, the carrying amounts of the Company’s borrowings under its other credit facilities, which are included within notes payable and other debt obligations in the table above, are classified within long-term debt in the Company’s consolidated balance sheets. The Company’s other credit facilities are subject to customary provisions and covenants.
Debt Guarantees and Covenants
The 4.875% Senior Notes are senior unsecured unsubordinated obligations and rank equal in right of payment with existing and future unsubordinated debt, and rank senior in right of payment to existing and future subordinated debt and are fully and unconditionally guaranteed on an unsecured, unsubordinated, joint and several basis by certain of the Company’s existing and future 100%-owned direct and indirect domestic subsidiaries that are each guarantors of the Company’s Credit Facility or other outstanding indebtedness. See Recently Issued Accounting Pronouncements in Note 16 - Supplemental Guarantor Condensed Unaudited Consolidating Financial Information.
1 – Business, Basis of Presentation and Significant Accounting Policies for information related to the Company’s adoption of the SEC’s amended rules regarding financial disclosure requirements for guarantors and issuers of guaranteed securities. MasTec was in compliance with the provisions and covenants of its outstanding debt instruments as of SeptemberJune 30, 20172020 and December 31, 2016.2019.
Additional Information
As of SeptemberJune 30, 20172020 and December 31, 2016,2019, accrued interest payable, which is recorded within other accrued expenses in the consolidated balance sheets, totaled $4.1$7.1 million and $8.5$7.5 million, respectively. Additionally, in connection with the 2017 Credit Facility amendment, the Company paid approximately $6 million in financing costs for the nine month period ended September 30, 2017. For additional information pertaining to the Company’s debt instruments, including its 4.875% Senior Notes, see Note 7 - Debt in the Company’s 20162019 Form 10-K.
Subsequent Event
In July 2020, the Company agreed to issue $600 million aggregate principal amount of 4.50% senior unsecured notes due August 15, 2028 (the “4.50% Senior Notes”) at par in a private offering (the “Private Offering). The Private Offering is expected to close on August 4, 2020, subject to customary closing conditions. The proceeds from the Private Offering will be used to redeem or repurchase all of the Company’s existing 4.875% Senior Notes, to pay fees and expenses in connection therewith, and to repay revolving loans under the Credit Facility. Prior to redeeming the 4.875% Senior Notes, the Company may temporarily pay down revolving loans under the Credit Facility and then, subject to customary borrowing conditions, re-borrow under the Credit Facility to effect the redemption. The 4.50% Senior Notes will rank equally in right of payment with any existing and future senior debt, and senior in right of payment to any existing and future subordinated debt. The 4.50% Senior Notes will be effectively junior to the Company’s secured debt, including the Credit Facility, to the extent of the value of the assets securing that debt. The 4.50% Senior Notes will be fully and unconditionally guaranteed on a senior unsecured, joint and several basis by certain of the Company’s existing and future 100%-owned direct and indirect domestic restricted subsidiaries that are each guarantors of the Credit Facility or other outstanding indebtedness. Concurrent with the commencement of the Private Offering, the Company delivered a conditional notice for the full redemption of all of its outstanding 4.875% Senior Notes on August 19, 2020, subject to certain conditions including consummation of the Private Offering.
Note 8 - Lease Obligations
Capital Leases
MasTec enters into agreements that provide lease financing for machinery and equipment. The gross amount of assets held under capital leases as of September 30, 2017 and December 31, 2016, which are included within property and equipment, net, totaled $404.1 million and $294.9 million, respectively. Assets held under capital leases, net of accumulated depreciation, totaled $269.6 million and $177.5 million as of September 30, 2017 and December 31, 2016, respectively.
Operating Leases
In the ordinary course of business, the Company enters into non-cancelable operating leasesagreements that provide financing for certainmachinery and equipment and for other of its facility, vehicle and equipment needs, including related party leases. See Note 15 - Related Party Transactions. RentAs of June 30, 2020, the Company’s leases have remaining lease terms of up to nine years. Lease agreements may contain renewal clauses, which, if elected, generally extend the term of the lease for one to five years for both equipment and relatedfacility leases. Certain lease agreements may also contain options to purchase the leased property and/or options to terminate the lease. In addition, lease agreements may include periodic adjustments to payment amounts for inflation or other variables, or may require payments for taxes, insurance, maintenance or other expenses, which are generally referred to as non-lease components. The Company’s lease agreements do not contain significant residual value guarantees or material restrictive covenants.
Finance Leases
The gross amount of assets held under finance leases as of June 30, 2020 and December 31, 2019 totaled $502.0 million and $463.5 million, respectively. Assets held under finance leases, net of accumulated depreciation, totaled $387.1 million and $375.9 million as of June 30, 2020 and December 31, 2019, respectively. Depreciation expense associated with finance leases totaled $16.8 million and $11.2 million for the three month periods ended June 30, 2020 and 2019, respectively, and totaled $32.6 million and $21.2 million for the six month periods ended June 30, 2020 and 2019, respectively.
Operating Leases
Operating lease additions for the three and six month periods ended June 30, 2020 totaled $7.5 million and $13.3 million, respectively, and totaled $54.1 million and $66.4 million for the three and six month periods ended June 30, 2019, respectively, excluding the effect of adoption of ASU 2016-02, Leases (Topic 842), of approximately $230.0 million.
For the three month periods ended June 30, 2020 and 2019, rent expense for operating leases that have non-cancelable terms in excess of one year totaled approximately $25.4$26.8 million and $25.9$27.4 million, respectively, of which $2.8 million and $2.1 million, respectively, represented variable lease costs, and for the threesix month periods ended SeptemberJune 30, 20172020 and 2016, respectively, and2019, rent expense for such leases totaled $77.6approximately $62.1 million and $74.8$55.3 million, for the nine month periods ended September 30, 2017respectively, of which $5.7 million and 2016, respectively.$4.4 million, respectively, represented variable lease costs. The Company also incurred rent and related expense for facilities, vehicles and equipment having originalleases with terms of one year or less totaling approximately $159.4$72.9 million and $96.7$115.6 million for the three month periods ended SeptemberJune 30, 20172020 and 2016,2019, respectively, and totaling $347.8approximately $150.4 million and $213.9$208.4 million for the ninesix month periods ended SeptemberJune 30, 20172020 and 2016,2019, respectively. Rent expense for operating leases is generally consistent with the amount of the related payments, and is included within operating activities in the consolidated statements of cash flows.


Additional Lease Information
Future minimum lease commitments as of June 30, 2020 were as follows (in millions):
 
 Finance
 Leases
 Operating Leases
2020, remaining six months$66.8
 $50.4
2021120.0
 69.8
202279.6
 44.5
202331.2
 21.7
20244.8
 13.9
Thereafter0.3
 29.1
Total minimum lease payments$302.7
 $229.4
Less amounts representing interest(16.2) (17.9)
Total lease obligations, net of interest$286.5
 $211.5
Less current portion119.1
 78.0
Long-term portion of lease obligations, net of interest$167.4
 $133.5

As of June 30, 2020, finance leases had a weighted average remaining lease term of 2.6 years and a weighted average discount rate of 4.0%. Non-cancelable operating leases had a weighted average remaining lease term of 4.0 years and a weighted average discount rate of 4.0% as of June 30, 2020.
Note 9 – Stock-Based Compensation and Other Employee Benefit Plans
The Company has stock-based compensation plans, under which shares of the Company’s common stock are reserved for issuance. Under all stock-based compensation plans in effect as of SeptemberJune 30, 2017, including employee stock purchase plans,2020, there were approximately 4.9 million


3,107,000 shares available for future grant. In March 2017,Non-cash stock-based compensation expense under all plans totaled $5.8 million and $4.2 million for the Company’s boardthree month periods ended June 30, 2020 and 2019, respectively, and totaled $9.9 million and $7.9 million for the six month periods ended June 30, 2020 and 2019, respectively. Income tax benefits associated with stock-based compensation arrangements totaled $1.4 million and $1.1 million for the three month periods ended June 30, 2020 and 2019, respectively. For the six month periods ended June 30, 2020 and 2019 income tax benefits totaled $2.2 million and $4.2 million, respectively, including net tax deficiencies related to the vesting of directors adopted the Amendedshare-based payment awards totaling $0.2 million and Restated 2013 Incentive Compensation Plan (the “Amended 2013 ICP”), which was effective as of January 1, 2017 and changed the amount ofnet tax the Company can withhold for employee tax withholdings on share-based awards, as provided under ASU 2016-09. The Company adopted ASU 2016-09 as of January 1, 2017, as discussed in Note 1 - Business, Basis of Presentation and Significant Accounting Policies.benefits totaling $2.3 million, respectively.
Restricted Shares
MasTec grants restricted stock awards and restricted stock units (together, “restricted shares”), to eligible participants, which are valued based on the closing market share price of MasTec common stock (the “market price”) on the date of grant. During the restriction period, holders of restricted stock awards are entitled to vote the shares. TotalAs of June 30, 2020, total unearned compensation related to restricted shares as ofSeptember 30, 2017was approximately $15.8$36.0 million,, which is expected to be recognized over a weighted average period of approximately 1.12.2 years. The intrinsicThe fair value of restricted shares that vested, which is based on the market price on the date of vesting, totaled $0.1$0.9 million and $0.3 million for both the three month periods ended SeptemberJune 30, 20172020 and 2016,2019, respectively, and totaled $11.9$6.5 million and $1.5$13.9 million for the ninesix month periods ended SeptemberJune 30, 20172020 and 2016,2019, respectively.
Activity, restricted shares: (a)
Restricted
Shares
 Per Share Weighted Average Grant Date Fair Value
Non-vested restricted shares, as of December 31, 20191,221,593
 $45.36
Granted933,455
 27.08
Vested(180,394) 39.47
Canceled/forfeited(237,800) 59.20
Non-vested restricted shares, as of June 30, 20201,736,854
 $34.25
Activity, restricted shares: (a)
Restricted
Shares
 Per Share Weighted Average Grant Date Fair Value
Non-vested restricted shares, as of December 31, 20161,970,586
 $21.61
Granted193,348
 39.47
Vested(304,211) 40.72
Canceled/forfeited(30,041) 20.24
Non-vested restricted shares, as of September 30, 20171,829,682
 $20.34

(a)
Includes 39,050 and 43,3002,300 restricted stock units as of SeptemberJune 30, 2017 and December 31, 2016, respectively.
2020.
Stock Options

The Company previously granted options to purchase its common stock to employees and members of the Board of Directors and affiliates under various stock option plans. During 2016, all stock options that were outstanding under previous stock option grants were exercised. The intrinsic value of options exercised, which is based on the difference between the exercise price and the market share price of the Company’s common stock on the date of exercise, totaled $0.5 million and $1.8 million for the three and nine month periods ended September 30, 2016, respectively. Net of shares withheld in cashless option exercises, there were no proceeds from option exercises for the three month period ended September 30, 2016, and for the nine month period ended September 30, 2016, proceeds totaled $1.9 million.


Employee Stock Purchase Plans
The Company has certain employee stock purchase plans (collectively, “ESPPs”), under which shares of the Company'sCompany’s common stock are available for purchase by eligible employees. The following table provides details pertaining to the Company’s ESPPs for the periods indicated:
 For the Six Months Ended June 30,
 2020 2019
Cash proceeds (in millions)
$3.9
 $2.4
Common shares issued154,059
 63,976
Weighted average price per share$25.61
 $37.52
Weighted average per share grant date fair value$7.71
 $9.54
 For the Nine Months Ended September 30
 2017 2016
Cash proceeds (in millions)
$2.4
 $2.0
Common shares issued68,789
 115,556
Weighted average price per share$34.72
 $16.88
Weighted average per share grant date fair value$9.00
 $4.58
Non-CashStock-Based Compensation Expense
Details of non-cash stock-based compensation expense and related tax effects for the periods indicated were as follows (in millions):
 For the Three Months Ended September 30 For the Nine Months Ended September 30
 2017 2016 2017 2016
Non-cash stock-based compensation expense$3.4
 $3.9
 $10.5
 $11.3
Income Tax Effects:       
Income tax effect of non-cash stock-based compensation$1.3
 $1.7
 $3.8
 $5.6
Excess tax benefit from non-cash stock-based compensation (a)
$0.0
 $0.3
 $0.1
 $1.4
(a)
Excess tax benefits represent cash flows from tax deductions in excess of the tax effect of compensation expense associated with share-based payment arrangements. For the ninemonth period ended September 30, 2017, the Company incurred a net tax deficiency of $0.1 million related to the vesting of share-based payment awards and excess tax benefits were de minimis. As discussed in Note 1 - Business, Basis of Presentation and Significant Accounting Policies, the Company adopted


ASU 2016-09 effective January 1, 2017 on a prospective basis. ASU 2016-09 changed the required presentation of excess tax benefits in the consolidated statement of cash flows from financing activities to operating activities. Excess tax benefits for the comparative prior year period are classified as cash flows from financing activities.
Note 10 – Other Retirement Plans
Multiemployer Plans. Certain of MasTec’s subsidiaries, including certain subsidiaries in Canada, contribute amounts to multiemployer pension and other multiemployer benefit plans and trusts (“MEPPs”), which are recorded as a component of employee wages and salaries within costs of revenue, excluding depreciation and amortization. Contributions are generally based on fixed amounts per hour per employee for employees covered under these plans. Multiemployer plan contribution rates are determined annually and assessed on a “pay-as-you-go” basis based on union employee payrolls. Union payrolls cannot be determined for future periods because the number of union employees employed at a given time, and the plans in which they may participate, vary depending upon the location and number of ongoing projects at a given time and the need for union resources in connection with those projects. Total contributions to multiemployer plans and the related number of employees covered by these plans including with respect to the Company’s Canadian operations, for the periods indicated were as follows:
 Multiemployer Plans
 Covered Employees 
Contributions (in millions)
 Low High Pension Other Multiemployer Total
For the Three Months Ended June 30:         
20201,424
 1,469
 $6.9
 $2.1
 $9.0
20192,117
 5,349
 $21.8
 $1.5
 $23.3
For the Six Months Ended June 30:         
20201,119
 1,469
 $12.3
 $3.8
 $16.1
20191,626
 5,349
 $28.8
 $2.8
 $31.5
 Multiemployer Plans
 Covered Employees 
Contributions (in millions)
 Low High Pension Other Multiemployer Total
For the Three Months Ended September 30:         
20173,669
 7,057
 $36.7
 $2.7
 $39.4
20164,170
 4,910
 $26.4
 $2.9
 $29.3
For the Nine Months Ended September 30:         
2017550
 7,057
 $68.1
 $8.0
 $76.1
20161,112
 4,910
 $43.4
 $7.6
 $51.0

The fluctuations in the average number of employees covered under multiemployer plans and related contributions in the table above arerelated primarily related to higher levelstiming of activity for the Company’s union resource-based project activityprojects, the majority of which are within the Company’sits oil and gas operations.
Note 11 – Equity
Share Activity
The Company’s share repurchase programs provide for the repurchase of shares of MasTec common stock from time to time in open market transactions or in privately negotiated transactions in accordance with applicable securities laws. The timing and the amount of any repurchases is determined based on market conditions, legal requirements, cash flow and liquidity needs and other factors. The Company’s share repurchase programs do not have an expiration date and may be modified or suspended at any time at the Company’s discretion. Share repurchases, which are recorded at cost and are held in the Company’s treasury, are funded with available cash or with availability under the Credit Facility. The Company may use either authorized and unissued shares or treasury shares to meet share issuance requirements. Treasury stock is recorded at cost.
During the six month period ended June 30, 2020, the Company repurchased 3.6 million shares of its common stock for an aggregate purchase price totaling approximately $120.2 million, of which $0.8 million was repurchased during the second quarter. Of the total repurchased shares, 0.6 million were repurchased for $28.8 million under a $150 million share repurchase program that was established in September 2018 and completed in the first quarter of 2020, and 3.0 million were repurchased for $91.4 million under the Company’s December 2018 $100 million share repurchase program. There were 0 share repurchases for the three month period ended June 30, 2019. For the six month period ended June 30, 2019, share repurchases totaled approximately $0.6 million, which were completed under the Company’s September 2018 $150 million share repurchase program.
As of June 30, 2020, $158.6 million was available for future share repurchases under all of the Company’s open share repurchase programs, which included $8.6 million under the Company’s December 2018 share repurchase program, and the full amount of the Company’s March 2020 $150 million share repurchase program.
Accumulated Other Comprehensive Loss
Accumulated other comprehensive loss is composed of unrealizedUnrealized foreign currency translation gains and losses, which relate primarily to fluctuations in foreign currency exchange rates of the Company’s foreign subsidiaries with a functional currency other than the U.S. dollar, and unrealized gains and losses from certain investment activities. For bothactivity, net, for the three and ninesix month periods ended SeptemberJune 30, 20172020 and 2016, unrealized foreign currency activity related primarily2019 relates to the Company’s Canadian operations in Canada and unrealizedMexico. Unrealized investment activity, relatednet, for each of the three and six month periods ended June 30, 2020 and 2019 relates to unrealized losses on interest rate swaps associated with the Waha JVs.
Share Activity
No shares of the Company’s common stock have been repurchased under the Company’s 2016 share repurchase program.


Note 12 - Income Taxes
In determining the quarterly provision for income taxes, management uses an estimated annual effective tax rate based on forecasted annual pre-tax income, permanent tax differences, statutory tax rates and tax planning opportunities in the various jurisdictions in which the Company operates. The effect of significant discrete items is separately recognized in the quarter(s) in which they occur. For the three month periodperiods ended SeptemberJune 30, 2017, the Company recognized certain tax credits based upon the results of a study that is currently underway, which amount was determined based on management’s estimates2020 and currently available information. Further adjustments to the amount recognized may occur as the results of the study are finalized, which is expected to occur in the fourth quarter of 2017.

As discussed in Note 1 - Business, Basis of Presentation and Significant Accounting Policies, effective January 1, 2017, the Company adopted ASU 2016-09, which changed the recognition requirements for excess tax benefits (“windfalls”) or tax deficiencies (“shortfalls”) from share-based payment awards. ASU 2016-09 requires windfalls or shortfalls to be recognized within income tax expense in the interim periods in which they occur, rather than as additional paid-in capital. Given that windfalls or shortfalls are recognized in income tax expense in the periods in which they occur, they are not included when estimating annual effective tax rates. The tax effect related to the vesting of share-based payment awards did not have a significant effect on2019, the Company’s consolidated effective tax rates were 26.7% and 24.8%, respectively. For the six month periods ended June 30, 2020 and 2019, the Company’s consolidated effective tax rates were 18.6% and 24.1%, respectively. The Company’s effective tax rate for the three and ninesix month periodsperiod ended SeptemberJune 30, 2017.

As2020 included a benefit of September 30, 2017,approximately $9.6 million related to the Company had $274.5 millionrelease of long-term deferred tax liabilities. As of December 31, 2016, currentcertain valuation allowances on Canadian deferred tax assets net, totaled $11.8that were no longer necessary. For the six month period ended June 30, 2019, the Company’s effective tax rate was favorably affected by reduced foreign earnings, the recognition of $2.3 million of excess tax benefits from the vesting of share-based awards and long-term deferredforeign tax liabilities, net, totaled $178.4 million. rate changes.
In addition, as of September 30, 2017response to the COVID-19 pandemic, the Coronavirus Aid, Relief and December 31, 2016, accrued incomeEconomic Security Act (“CARES Act”) was signed into law on March 27, 2020.  The CARES Act provides for various tax relief and other taxes payable, which are included within other accrued expenses, totaled $19.8 million and $40.3 million, respectively.tax incentive measures. At this time, management does not believe that the CARES Act will have a material impact on the Company’s financial results in 2020.  The Company adopted Income Taxes (Topic 740): Balance Sheet Classificationwill continue to evaluate the impact of Deferred Taxes (“ASU 2015-17”), which changed the classification requirements for deferred tax assetsCARES Act on its financial position, results of operations and liabilities, effective January 1, 2017. ASU 2015-17 requires long-term classification of all deferred


tax assets and liabilities, rather than separately classifying deferred tax assets and liabilities based on their net current and non-current amounts, as was required under the previous guidance. The Company adopted ASU 2015-17 on a prospective basis, therefore prior periods were not adjusted to conform to the current period presentation. The adoption of ASU 2015-17 did not have had a material effect on the consolidated financial statements.cash flows.
Note 13 - Segments and Related Information
Segment Discussion
MasTecThe Company manages its operations under five5 operating segments, which represent MasTec’s fiveits 5 reportable segments: (1) Communications; (2) Oil and Gas; (3) Electrical Transmission; (4) Power GenerationClean Energy and IndustrialInfrastructure and (5) Other. This structure is generally focused on broad end-user markets for MasTec’sthe Company’s labor-based construction services. All five5 reportable segments derive their revenue from the engineering, installation and maintenance of infrastructure, primarily in North America.
The Communications segment performs engineering, construction, maintenance and customer fulfillment activities related to communications infrastructure, primarily for wireless and wireline/fiber communications and install-to-the-home customers, and, to a lesser extent, infrastructure for utilities, among others. MasTecThe Company performs engineering, construction and maintenance services onfor oil and natural gas pipelines and processing facilities for the energy and utilities industries through its Oil and Gas segment. The Electrical Transmission segment primarily serves the energy and utility industries through the engineering, construction and maintenance of electrical transmission lines and substations. The Power GenerationClean Energy and IndustrialInfrastructure segment primarily serves energy, utility and other end-markets through the installation and construction of conventional andpower facilities, including from renewable power facilities,sources, related electrical transmission infrastructure, ethanol/biofuel facilities and various types of heavy civil and industrial infrastructure. The Other segment includes certain equity investees, the services of which vary from those provided by the Company’s four primary segments, as well as other small business units that perform construction and other services for a variety of international end-markets.
Earnings before interest, taxes, depreciation and amortization (“EBITDA”) is the measure of profitability used by management to manage its segments and, accordingly, in its segment reporting. As appropriate, the Company supplements the reporting of consolidated financial information determined in accordance with U.S. GAAP with certain non-U.S. GAAP financial measures, including EBITDA. The Company believes these non-U.S. GAAP measures provide meaningful information and help investors understand the Company’s financial results and assess its prospects for future performance. The Company uses EBITDA to evaluate its performance, both internally and as compared with its peers, because it excludes certain items that may not be indicative of the Company’s core operating results for its reportable segments, as well as items that can vary widely across different industries or among companies within the same industry, and for non-cash stock-based compensation expense, can also be subject to volatility from changes in the market price per share of our common stock or variations in the value of shares granted.industry. Segment EBITDA is calculated in a manner consistent with consolidated EBITDA.
For the three and nine month periods ended September 30, 2017, Other segment EBITDA included project losses of $0.4 million and $7.4 million, respectively, from a proportionately consolidated non-controlled Canadian joint venture, which is managed by a third party, and for which we have minimal direct construction involvement. For both the three and nine month periods ended September 30, 2016, Other segment EBITDA included $5.1 million of project losses on this proportionately consolidated non-controlled Canadian joint venture. For the nine month period ended September 30, 2016, EBITDA for the Oil and Gas and Electrical Transmission segments included first quarter project losses of $13.5 million and $15.1 million, respectively.
Summarized financial information for MasTec’s reportable segments is presented and reconciled to consolidated financial information for total MasTec in the following tables, (in millions):including a reconciliation of consolidated income before income taxes to EBITDA, all of which are presented in millions. The tables below may contain slight summation differences due to rounding.
For the Three Months Ended September 30 For the Nine Months Ended September 30For the Three Months Ended June 30, For the Six Months Ended June 30,
Revenue:2017 2016 2017 20162020 2019 2020 2019
Communications (a)
$610.5
 $624.3
 $1,762.2
 $1,728.0
$654.3
 $652.6
 $1,298.4
 $1,265.4
Oil and Gas1,161.0
 736.0
 2,757.2
 1,454.3
368.5
 936.8
 727.6
 1,558.1
Electrical Transmission81.8
 101.7
 277.3
 283.6
124.1
 100.4
 252.2
 195.3
Power Generation and Industrial96.9
 123.6
 204.1
 324.7
Clean Energy and Infrastructure426.1
 250.2
 712.4
 439.6
Other10.6
 7.6
 14.2
 14.9
0.1
 0.0
 0.1
 0.1
Eliminations(5.0) (7.0) (10.9) (12.7)(3.8) (1.0) (4.8) (1.2)
Consolidated revenue$1,955.8
 $1,586.2
 $5,004.1
 $3,792.8
$1,569.3
 $1,939.0
 $2,985.9
 $3,457.3
(a)
Revenue generated primarily by utilities customers represented 13.0%14.9% and 11.1%15.4% of Communications segment revenue for the three month periods ended SeptemberJune 30, 20172020 and 2016,2019, respectively, and represented 12.6%15.0% and 10.9%15.5% for the ninethe six month periods ended SeptemberJune 30, 20172020 and 2016,2019, respectively.




For the Three Months Ended September 30 For the Nine Months Ended September 30For the Three Months Ended June 30, For the Six Months Ended June 30,
EBITDA:2017 2016 2017 20162020 2019 2020 2019
Communications$65.3
 $62.8
 $173.2
 $190.9
$76.4
 $52.4
 $127.2
 $97.8
Oil and Gas108.1
 117.8
 356.1
 187.6
80.1
 179.3
 154.5
 286.7
Electrical Transmission4.5
 (8.3) 11.2
 (42.0)(3.2) 8.7
 5.1
 12.4
Power Generation and Industrial9.3
 6.1
 14.8
 13.8
Clean Energy and Infrastructure30.1
 8.9
 35.0
 12.1
Other10.1
 (3.1) 11.6
 (2.6)7.5
 6.4
 14.9
 12.7
Corporate(22.0) (24.3) (69.2) (55.1)(31.0) (19.2) (62.9) (48.7)
Consolidated EBITDA$175.3
 $151.0
 $497.7
 $292.6
$159.9
 $236.5
 $273.8
 $373.0


 For the Three Months Ended June 30, For the Six Months Ended June 30,
Depreciation and Amortization:2020 2019 2020 2019
Communications$21.4
 $15.3
 $41.0
 $30.0
Oil and Gas32.1
 34.3
 60.2
 68.9
Electrical Transmission6.6
 5.2
 12.4
 9.7
Clean Energy and Infrastructure4.7
 3.3
 8.7
 6.4
Other0.0
 0.0
 0.0
 0.0
Corporate2.7
 1.8
 5.7
 4.0
Consolidated depreciation and amortization$67.5
 $59.9
 $128.0
 $119.0

 For the Three Months Ended September 30 For the Nine Months Ended September 30
Depreciation and Amortization:2017 2016 2017 2016
Communications$13.8
 $12.5
 $39.4
 $37.2
Oil and Gas26.0
 20.7
 71.1
 58.2
Electrical Transmission5.8
 6.1
 17.3
 17.1
Power Generation and Industrial2.9
 1.6
 5.8
 4.6
Other0.0
 0.0
 0.1
 0.0
Corporate1.6
 1.7
 4.7
 5.1
Consolidated depreciation and amortization$50.1
 $42.6
 $138.4
 $122.2

The following table, which may contain slight summation differences due to rounding, presents a reconciliation of consolidated income before income taxes to EBITDA (in millions):
 For the Three Months Ended June 30, For the Six Months Ended June 30,
EBITDA Reconciliation:2020 2019 2020 2019
Income before income taxes$77.6
 $160.0
 $114.1
 $215.1
Plus:       
Interest expense, net14.8
 16.6
 31.8
 38.9
Depreciation57.7
 55.3
 110.8
 109.5
Amortization of intangible assets9.8
 4.7
 17.2
 9.5
Consolidated EBITDA$159.9
 $236.5
 $273.8
 $373.0

 For the Three Months Ended September 30 For the Nine Months Ended September 30
EBITDA Reconciliation:2017 2016 2017 2016
Income before income taxes$107.6
 $95.3
 $314.3
 $132.4
Plus:       
Interest expense, net17.6
 13.1
 45.0
 37.9
Depreciation and amortization50.1
 42.6
 138.4
 122.2
Consolidated EBITDA$175.3
 $151.0
 $497.7
 $292.6
Foreign Operations. Operations and Other. MasTec operates in North America, primarily in the United States and Canada, and, to a lesser extent, in Mexico. ForMexico and the Caribbean. Revenue derived from U.S. operations totaled $1.6 billion and $1.9 billion for the three month periods ended SeptemberJune 30, 20172020 and 2016, revenue of $1.92019, respectively, and totaled $2.9 billion and $1.5$3.3 billion respectively, was derived from U.S. operations,for the six month periods ended June 30, 2020 and revenue of $61.0 million and $73.8 million, respectively, was2019, respectively. Revenue derived from foreign operations totaled $14.0 million and $47.9 million for the three month periods ended June 30, 2020 and 2019, respectively, and totaled $59.6 million and $126.7 million for the six month periods ended June 30, 2020 and 2019, respectively, the majority of which was derived from the Company’s Canadian operations. For the nine month periods ended September 30, 2017operations in its Oil and 2016, revenue of $4.8 billionGas segment, and, $3.6 billion, respectively, was derived from U.S. operations, and revenue of $160.7 million and $222.8 million, respectively, was derived from foreign operations, the majority of which wasto a lesser extent, from the Company’s Canadian operations. The majority of the Company’s foreignwireless operations during the three and nine month periods ended September 30, 2017 and 2016 were in the Company’s Oil and Gas segment.Mexico. Long-lived assets held in the U.S. included property and equipment, net, of $629.2$949.1 million and $475.3$874.7 million as of SeptemberJune 30, 20172020 and December 31, 2016,2019, respectively, and, for the Company’s businesses in foreign countries, the majority of which are in Canada, totaled $62.2$23.1 million and $73.8$31.1 million, respectively. Intangible assets and goodwill, net, related to the Company’s U.S. operations totaled approximately $1.2 billion and $1.1$1.4 billion as of Septemberboth June 30, 20172020 and December 31, 2016,2019, respectively, and for the Company’s businesses in foreign countries, the majority of which are in Canada, totaled approximately $114.3$51.4 million and $107.8$56.4 million as of SeptemberJune 30, 20172020 and December 31, 2016,2019, respectively. AmountsThe majority of the Company’s long-lived and intangible assets and goodwill in foreign countries relate to its Canadian operations. As of June 30, 2020 and December 31, 2019, amounts due from customers from which foreign revenue was derived accounted for approximately 6%3% and 8%5%, respectively, of the Company’s consolidated net accounts receivable position, as of September 30, 2017 and December 31, 2016, which represents accounts receivable, net, less BIEC.deferred revenue. Revenue from governmental entities for both the three and six month periods ended June 30, 2020 totaled approximately 2% of total revenue, and for both the three and six month periods ended June 30, 2019 totaled approximately 1%. Substantially all revenue from governmental entities was derived from the Company’s U.S. operations.




Significant Customers
Revenue concentration information for significant customers as a percentage of total consolidated revenue was as follows:
 For the Three Months Ended September 30 For the Nine Months Ended September 30
Customer:2017 2016 2017 2016
Energy Transfer affiliates (a)
49% 35% 40% 26%
AT&T (including DIRECTV®) (b)
21% 30% 25% 34%
 For the Three Months Ended June 30, For the Six Months Ended June 30,
Customer:2020 2019 2020 2019
AT&T (including DIRECTV®) (a)
19% 18% 21% 20%
Permian Highway Pipeline (b)
10% —% 7% —%
Equitrans Midstream Corporation (c)
1% 12% 2% 9%
(a)The Company's relationship with Energy Transfer affiliates is based upon various construction contracts for pipeline activities with Energy Transfer Partners L.P., and their subsidiaries and affiliates, all of which are consolidated by Energy Transfer Equity, L.P. Revenue from Energy Transfer affiliates is included in the Oil and Gas segment.
(b)
The Company’s relationship with AT&T is based upon multiple separate master service and other service agreements, including for installation and maintenance services, as well as construction/installation contracts for AT&T’s: (i) wireless business;wireless; (ii) wireline/fiber businesses;fiber; and (iii) various install-to-the-home businesses, including DIRECTV®DIRECTV®. Revenue from AT&T is included within the Communications segment.
(b)The Company's relationship with Permian Highway Pipeline is based upon various construction contracts for pipeline activities, for which the related revenue is included in the CommunicationsOil and Gas segment.
(c)The Company's relationship with Equitrans Midstream Corporation and its affiliates is based upon various construction contracts for pipeline activities, for which the related revenue is included in the Oil and Gas segment.
Note 14 - Commitments and Contingencies
MasTec is subject to a variety of legal cases, claims and other disputes that arise from time to time in the ordinary course of its business. See Note 14 - Commitmentsbusiness, including project contract price and Contingencies in the Company’s 2016 Form 10-K for additional information.acquisition purchase price disputes. MasTec cannot provide assurance that it will be successful in recovering all or any of the potential damages it has claimed or in defending claims against the Company. The outcome of such cases, claims and disputes cannot be predicted with certainty and an unfavorable resolution of one or more of them could have a material adverse effect on the Company’s business, financial condition, results of operations and cash flows.
COVID-19 Pandemic
During March 2020, the World Health Organization declared a global pandemic related to the rapidly growing outbreak of a novel strain of coronavirus (“COVID-19”), with the pandemic accelerating during the first half of March and further accelerating into July. The COVID-19 pandemic has significantly affected economic conditions in the United States and internationally, as national, state and local governments reacted to the public health crisis by requiring mitigation measures resulting in workforce, supply chain and other market disruptions that have created significant uncertainties in the U.S. and global economies and disrupted business activities for an uncertain period of time. The COVID-19 pandemic has had a negative impact on the Company’s operations and may continue to affect our future business activities. These impacts include lost productivity from governmental permitting approval delays, reduced crew productivity due to social distancing, other mitigation measures or other factors, the health and availability of work crews or other key personnel, including subcontractors or supply chain disruptions, higher operating costs and lower levels of overhead cost absorption and/or delayed project start dates or project shutdowns or cancellations that may be mandated or requested by governmental authorities or others.
Most of the Company’s construction services have been and currently are deemed essential under state and local pandemic mitigation orders, and all of its business segments continue to operate. The COVID-19 pandemic has had a negative impact on the Company’s operations and is expected to have some continued negative impact for the remainder of 2020. Management’s top priority has been to take appropriate actions to protect the health and safety of its employees, customers and business partners, including adjusting its standard operating procedures to respond to evolving health guidelines. Management believes that it is taking appropriate steps to mitigate any potential impact to the Company; however, given the uncertainty regarding the potential effects of the COVID-19 pandemic, any future impacts cannot be quantified or predicted with specificity.
Other Commitments and Contingencies
Leases. In the ordinary course of business, the Company enters into non-cancelable operating leases for certain of its facility, vehicle and equipment needs, including related party leases. See Note 8 - Lease Obligations and Note 15 - Related Party Transactions.
Letters of Credit. In the ordinary course of business, the Company is required to post letters of credit for its insurance carriers and surety bond providers and in support of performance under certain contracts as well as certain obligations associated with the Company’s costequity investments and equity investees,other strategic arrangements, including its variable interest entities. Such letters of credit are generally issued by a bank or similar financial institution. The letter of credit commits the issuer to pay specified amounts to the holder of the letter of credit under certain conditions. If this were to occur, the Company would be required to reimburse the issuer of the letter of credit, which, depending upon the circumstances, could result in a charge to earnings. As of SeptemberJune 30, 20172020 and December 31, 2016,2019, there were $189.1$158.3 million and $314.3$115.1 million, respectively, of letters of credit issued under the Company’s Credit Facility.credit facilities. The Company is not aware of any material claims relating to its outstanding letters of credit as of SeptemberJune 30, 20172020 or December 31, 2016.2019.
Performance and Payment Bonds. In the ordinary course of business, MasTec is required by certain customers to provide performance and payment bonds for contractual commitments related to projects in process.its projects. These bonds provide a guarantee to the customer that the Company will perform under the terms of a contract and that the Company will pay its subcontractors and vendors. If the Company fails to perform under a contract or to pay its subcontractors and vendors, the customer may demand that the surety make payments or provide services under the bond. The Company must reimburse the surety for expenses or outlays it incurs. As of SeptemberJune 30, 20172020 and December 31, 2016,2019, outstanding performance and payment bonds totaled $119.2approximated $692.0 million and $72.9$551.4 million, respectively, and estimated costs to complete projects secured by these bonds totaled $51.3$188.8 million and $9.5$194.7 million as of SeptemberJune 30, 20172020 and December 31, 2016,2019, respectively. These amounts do not include performance and payment bonds associated with the Company’s equity investees.
Cost and Equity Investees and Other Entities.


Investment Arrangements. The Company holds a 35% undivided interest in a proportionately consolidated non-controlled Canadian contractual joint venture that was underway when the Company acquired Pacer in 2014, whose sole activity involves the construction of a bridge, a business in which the Company does not otherwise engage. This joint venture, which is managed by a third party, and for which the Company has minimal direct construction involvement, automatically terminates upon completion of the project. The Company also holds undivided interests, ranging from 85% to 90%, in sevenmultiple proportionately consolidated non-controlled contractual joint ventures that provide infrastructure construction services for electrical transmission projects.projects, as well as a 50% undivided interest in a civil construction project. Income and/or losses incurred by these joint ventures are generally shared proportionally by the respective joint venture members, with the members of the joint ventures jointly and severally liable for all of the obligations of the joint venture. The respective joint venture agreements provide that each joint venture partner indemnify the other party for any liabilities incurred by such joint venture in excess of its ratable portion of such liabilities. Thus, it is possible that the Company could be required to pay or perform obligations in excess of its share if the other joint venture partners fail or refuse to pay or perform their respective share of the obligations. As of SeptemberJune 30, 2017,2020, the Company was not aware of circumstances that would reasonably lead to material future claims against it in connection with these arrangements. Included in the Company’s cash balances as of June 30, 2020 and December 31, 2019 are amounts held by entities that are proportionately consolidated totaling $10.9 million and $13.1 million, respectively. These amounts are available to support the operations of those entities, but are not available for the Company’s other operations.
The Company has other investment arrangements, as discussed in Note 4 - Fair Value of Financial Instruments and Note 15 - Related Party Transactions. From time to time, the Companyunder which it may incur costs or provide financing, performance, financial and/or other guarantees to or in connection with its investees.guarantees. See Note 4 - Fair Value of Financial Instruments regarding the Company’s other investment arrangements.
Self-Insurance. MasTec maintains insurance policies for workers’ compensation, general liability and automobile liability, which are subject to per claim deductibles. The Company is self-insured up to the amount of the deductible. The Company also maintains excess umbrella coverage. As of SeptemberJune 30, 20172020 and December 31, 2016,2019, MasTec’s estimated liability for unpaid claims and associated expenses, including incurred but not reported losses related to these policies, totaled $98.5$123.8 million and $85.8$123.4 million, respectively, of which $67.5$83.2 million and $55.2$87.3 million, respectively, were reflected within other long-term liabilities in the consolidated balance sheets.


MasTec also maintains an insurance policy with respect to employee group medical claims, which is subject to annual per employee maximum losses. MasTec’s estimated liability for employee group medical claims totaled $2.6$4.6 million and $4.2 million as of both SeptemberJune 30, 20172020 and December 31, 2016.2019, respectively.
The Company is required to post collateral, generally in the form of letters of credit, surety bonds and provide cash collateral to certain of its insurance carriers and to provide surety bonds in certain states.carriers. Insurance-related letters of credit for the Company’s workers’ compensation, general liability and automobile liability policies amounted to $84.6 million and $85.1$64.0 million as of Septemberboth June 30, 20172020 and December 31, 2016, respectively. In addition, cash collateral deposited with insurance carriers, which is included within other long-term assets, amounted to $1.5 million for these policies as of both September 30, 2017 and December 31, 2016.2019. Outstanding surety bonds related to workers’ compensation self-insurance programs amounted to $13.7 million and $13.5$38.5 million as of Septemberboth June 30, 20172020 and December 31, 2016, respectively.2019.
Employment Agreements. The Company has employment agreements with certain executives and other employees, which provide for compensation and certain other benefits and for severance payments under certain circumstances. Certain employment agreements also contain clauses that become effective upon a change in control of the Company. Upon the occurrence of any of the defined events in the various employment agreements, the Company would be obligated to pay certain amounts to the relevant employees, which vary with the level of the employees’ respective responsibility.
Collective Bargaining Agreements and Multiemployer Plans. As discussed in Note 10 - Other Retirement Plans, certain of MasTec’s subsidiaries are party to various collective bargaining agreements with unions representing certain of their employees, which require the Company to pay specified wages, provide certain benefits to their union employees and contribute certain amounts to multiemployer pension and other multiemployer benefits plans and trusts.MEPPs. The Employee Retirement Income Security Act of 1974, as amended by the Multiemployer Pension Plan Amendments Act of 1980 (collectively, “ERISA”), which governs U.S.-registered multiemployer pension plans,MEPPs, subjects employers to substantial liabilities in the event of thean employer’s complete or partial withdrawal from, or upon termination of, such plans.
The Company currently contributes, and in the past, has contributed to, plans that are underfunded, and, therefore, could have potential liability associated with a voluntary or involuntary withdrawal from, or termination of, these plans. As described in the Company’s 2016 Form 10-K, the Company, along with other members of the Pipe Line Contractors Association (the “PLCA”), voluntarily withdrew from the Central States Southeast and Southwest Areas Pension Fund (“Central States”) in November 2011, for which the Company established and paid a $6.4 million withdrawal liability. The Company is in arbitration to determine if there is any remaining amount owed on this withdrawal liability, and during the third quarter of 2017, the Company recognized $0.6 million of expense in connection with the expected settlement of this matter.
Other than the Company’s 2011 withdrawal from Central States and certain other underfunded plans, as described in the Company’s 2016 Form 10-K,June 30, 2020, the Company does not have plans to withdraw from, and is not aware of circumstances that would reasonably lead to material claims against it, in connection with these plans. However, therethe MEPPs in which it participates. There can be no assurance, however, that the Company will not be assessed liabilities in the future.
Based upon the information available to the Company from plan administrators as of September 30, 2017, several of the multiemployer pension plans in which it participates are underfunded and, as a result, the Company could be required to increase its contributions,future, including in the form of a surcharge on future benefit contributions.contributions or increased contributions on underfunded plans. The amount of additional funds the Company maycould be obligated to pay or contribute in the future cannot be estimated, as these amounts are based on future levels of work of the union employees covered by these plans, investment returns, which could be negatively affected by economic and market conditions and the level of underfunding of such plans.
Indemnities. The Company generally indemnifies its customers for the services it provides under its contracts, as well as other specified liabilities, which may subject the Company to indemnity claims, liabilities and related litigation. As of SeptemberJune 30, 20172020 and December 31, 2016,2019, the Company was not aware of any material asserted or unasserted claims in connection with these indemnity obligations.
Other Guarantees. In the ordinary course of its business, from time to time, MasTec guarantees the obligations of its subsidiaries, including obligations under certain contracts with customers, certain lease obligations and in some states, obligations in connection with obtaining contractors’ licenses. MasTec has also issued performance and other guarantees in connection with certain of its equity investees.investments. MasTec also generally warrants the work it performs for a one to two year period following substantial completion of a project. Much of the work performed by the Company is evaluated for defects shortly after the work is completed. Accrued warrantyWarranty claims are, andhave historically havenot been de minimis.material. However, if warranty claims occur, the Company could be required to repair or replace warrantied items, or, if customers elect to repair or replace the warrantied item using the services of another provider, the Company could be required to pay for the cost of the repair or replacement.
Concentrations of Risk. The Company had approximately 455380 customers for the ninesix month period ended SeptemberJune 30, 2017.2020. As of SeptemberJune 30, 2017 and December 31, 2016, one customer2020, 2 customers each accounted for approximately 44%17% and 24%14%, respectively, of the Company’s consolidated net accounts receivable position, which represents accounts receivable, net, less BIEC.deferred revenue. As of September 30, 2017 and December 31, 2016, a separate customer2019, 3 customers each accounted for approximately 17%, 13% and 17%11%, respectively, of the Company’s consolidated net accounts receivable position. In addition, the Company derived 83%66% and 80%65%, respectively, of its revenue from its top ten10 customers for the three month periods ended SeptemberJune 30, 20172020 and 2016,2019, and derived 80% and 76%63% of its revenues, respectively,revenue from its top ten10 customers for both the ninesix month periods ended SeptemberJune 30, 20172020 and 2016.2019.
Note 15 - Related Party Transactions
For the three month periods ended September 30, 2017 and 2016, revenue recognized by the Company’s Pacer subsidiary for work performed for a contractual joint venture in which it holds a 35% undivided interest totaled $0.6 million and $0.2 million, respectively, and for the nine month periods ended September 30, 2017 and 2016, totaled $0.9 million and $0.8 million, respectively. As of September 30, 2017 and December 31, 2016, receivables from this contractual joint venture totaled $0.9 million and $0.7 million, respectively. Related performance guarantees, which are based on the original full contract value, as of both September 30, 2017 and December 31, 2016, totaled Canadian $132.1 million (or approximately $105.9 million and $98.3 million, respectively). In connection with this contractual joint venture, the Company provided project-related financing of $2.7 million and $5.9 million, respectively, for the three and nine month periods ended September 30, 2017, and $0.8 million and $5.6 million, respectively, for the three and nine month periods ended September 30, 2016. As of September 30, 2017, there were no additional amounts committed to this entity.


In connection with an April 2017 acquisition, the Company acquired a 40% interest in an entity, valued at $0.4 million, which is accounted for as an equity method investment. The Company has a subcontracting arrangement with this entity. For the nine month period ended September 30, 2017, the Company incurred $0.2 million of expenses under this subcontracting arrangement, and there were no amounts outstanding as of September 30, 2017. During the nine month period ended September 30, 2017, the Company advanced $0.3 million to this entity, net, of which $0.3 million was outstanding as of September 30, 2017. The acquired company had a vendor financing arrangement with an entity that was owned by a member of subsidiary management, which arrangement was completed in the third quarter of 2017. The payments made under this arrangement for the three and nine month periods ended September 30, 2017 totaled $1.4 million and $5.3 million, respectively, and no amounts were outstanding as of September 30, 2017.
MasTec purchases, rents and leases equipment and purchases various types of supplies and services used in its business, including ancillary construction services, project-related site restoration and marketing and business development activities, from a number of different vendors on a non-exclusive basis, including CCI,and from time to time, rents equipment to, or performs construction services on behalf of, entities in which members of subsidiary management have ownership or commercial interests. For the Company hasthree month periods ended June 30, 2020 and 2019, such payments to related party entities totaled approximately $16.2 million and $17.8 million, respectively, and for the six month periods ended June 30, 2020 and 2019, totaled approximately $41.5 million and $46.3 million, respectively. Related payables totaled approximately $7.6 million and $14.7 million as of June 30, 2020 and December 31, 2019, respectively. Revenue from such related party arrangements totaled approximately $1.3 million and $0.6 million for the three month periods


ended June 30, 2020 and 2019, respectively, and totaled $2.3 million and $0.9 million for the six month periods ended June 30, 2020 and 2019, respectively. As of June 30, 2020, related amounts receivable, net, totaled approximately $0.4 million, and as of December 31, 2019, were de minimis.
In 2018, MasTec acquired a cost method investment.construction management firm specializing in steel building systems, of which Juan Carlos Mas, who is the brother of Jorge Mas, Chairman of MasTec’s Board of Directors, and José R. Mas, MasTec’s Chief Executive Officer, was a minority owner. Amounts outstanding for advances made by the Company on behalf of this entity totaled approximately $0.1 million and $0.5 million, net as of June 30, 2020 and December 31, 2019, respectively, which are expected to be settled under customary terms associated with the related purchase agreement.
The Company rents and leases equipment and purchases equipment supplies and servicing from CCI, in which it has a 15% equity investment. Juan Carlos Mas serves as the chairman of CCI. ForCCI, and a member of management of a MasTec subsidiary and an entity that is owned by the Mas family are minority owners. MasTec paid CCI, net of rebates, $1.0 million and $9.8 million, respectively, for the three month periods ended SeptemberJune 30, 20172020 and 2016, MasTec paid CCI approximately $22.92019, and $1.4 million and $10.0$15.8 million, respectively, for equipment supplies, rentals, leases and servicing. For the ninesix month periods ended SeptemberJune 30, 20172020 and 2016, MasTec paid CCI approximately $34.9 million and $13.7 million, respectively, net of rebates.2019. As of SeptemberJune 30, 20172020 and December 31, 2016, related payables2019, amounts payable to CCI, net of rebates receivable, totaled approximately $6.1$1.4 million and $1.5$0.2 million, respectively. The Company has also rented equipment to CCI. Revenue from equipment rentals to CCI totaled approximately $0.6 million for both the three and six month periods ended June 30, 2020, and related receivables totaled approximately $0.1 million as of June 30, 2020.
MasTec has a subcontracting arrangement with an entity for the performance of construction services, the minority owners of which include an entity controlled by Jorge Mas and José R. Mas, along with two2 members of management of a MasTec subsidiary. NaN subcontracting expenses were incurred by MasTec for the three month period ended June 30, 2020. MasTec incurred subcontracting expenses of approximately $4.6 million for the three month period ended June 30, 2019. MasTec incurred subcontracting expenses of approximately $0.6 million, net and $6.2 million for the six month periods ended June 30, 2020 and 2019, respectively. As of both June 30, 2020 and December 31, 2019, related amounts payable totaled approximately $0.2 million.
MasTec has a leasing arrangement for an aircraft that is owned by an entity that Jorge Mas owns. For the three month periods ended SeptemberJune 30, 20172020 and 2016,2019, MasTec incurred $39.2paid approximately $0.6 million and $5.6$0.7 million, respectively, of expenses underrelated to this subcontractingleasing arrangement, and for the ninesix month periods ended SeptemberJune 30, 20172020 and 2016, MasTec incurred $54.82019, paid approximately $1.3 million and $8.8$1.4 million, respectively. During
MasTec performs construction services on behalf of a professional Miami soccer franchise (the “Franchise”) in which Jorge Mas and José R. Mas are minority owners. Services provided by MasTec include the third quarterconstruction of 2016,a soccer facility and stadium, including wireless infrastructure services. MasTec charged approximately $1.5 million and $5.5 million under these arrangements for the Company sold equipment totaling $0.3three and six month periods ended June 30, 2020, respectively, and charged approximately $2.3 million to this entity. Asfor both the three and six month periods ended June 30, 2019. Amounts outstanding as of SeptemberJune 30, 20172020 and December 31, 2016, related amounts payable2019 totaled $20.1approximately $3.1 million and $0.1$3.9 million, respectively. Payments for other expenses related to the Franchise totaled $0.2 million for the six month period ended June 30, 2020.
MasTec leases employees and provides satellite communications services to a customer in which Jorge Mas and José R. Mas own a majority interest. For both three month periods ended September 30, 2017 and 2016, MasTec charged approximately $0.2 millionCharges to this customer and for both the nine month periods ended September 30, 2017 and 2016, charged $0.6 million. As of both September 30, 2017 and December 31, 2016, outstanding receivables from employee leasing arrangements with this customer totaled $0.2 million. The Company also provides satellite communication services to this customer. For both the three month periods ended September 30, 2017 and 2016, revenue from satellite communication services provided to this customer totaled approximately $0.2 million, and for the nine month periods ended September 30, 2017 and 2016, satellite communication revenues totaled $0.6 million and $0.7 million, respectively. As of September 30, 2017 and December 31, 2016, receivables from this arrangement totaled approximately $0.3 million and $0.4 million, respectively.
MasTec has a leasing arrangement with an independent third party that leases an aircraft from a Company owned by Jorge Mas. For the three month periods ended September 30, 2017 and 2016, MasTec paid $0.5 million and $0.7 million, respectively, under this leasing arrangement, and for the nine month periods ended September 30, 2017 and 2016, MasTec paid $1.5 million and $2.0 million, respectively. As of both September 30, 2017 and December 31, 2016, related amounts payable were de minimis.
For the three month periods ended September 30, 2017 and 2016, related party lease payments for operational facilities and equipment, which are primarily associated with members of subsidiary management, totaled approximately $11.3 million and $12.5 million, respectively, and for the nine month periods ended September 30, 2017 and 2016, related party lease payments totaled approximately $38.4 million and $31.6 million, respectively. Payables associated with related party leases totaled approximately $0.6 million and $0.3 million as of September 30, 2017 and December 31, 2016, respectively. Additionally, payments for various types of supplies and services, including ancillary construction services, project-related site restoration and marketing and business development activities associated with members of subsidiary management totaled approximately $26.4 million and $7.4 million for the three month periods ended SeptemberJune 30, 20172020 and 2016, respectively,2019, and totaled $41.0 million and $14.2 million for both the ninesix month periods ended SeptemberJune 30, 20172020 and 2016, respectively.2019 totaled approximately $0.7 million. As of SeptemberJune 30, 20172020 and December 31, 2016, associated amounts payable2019, outstanding receivables related to these arrangements totaled approximately $0.9 million and $0.8 million, and $3.7 million, respectively. In addition, MasTec performs construction services for an entity associated with a member of subsidiary management. Revenue from this arrangement totaled $1.0 million for the three month period ended September 30, 2017, and related receivables totaled $0.5 million as of September 30, 2017. The oil and gas pipeline equipment company that was acquired by MasTec in the third quarter of 2017 was formerly owned by a member of subsidiary management. MasTec previously leased equipment from this company. The Company paid $40.6 million in cash and $57.3 million of contingent consideration in connection with this acquisition.
Non-controlling interests in entities consolidated by the Company represent ownership interests held by certain members of management of several of the Company’s subsidiaries, primarily in our Oil and Gas segment, and the Company has a subcontracting arrangement with one of these entities for the performance of ancillary oil and gas construction services, which transactions are eliminated in consolidation. The Company made distributions of earnings of $1.3 million in the first quarter of 2017 to holders of its non-controlling interests.
Split Dollar Agreements
MasTec has split dollar life insurance agreements with eachtrusts, of which Jorge Mas or José R. Mas is a trustee. The company paid $0.5 million and Jorge Mas. In$0.7 million in the second quarters of both 2020 and 2019 in connection with the split dollar agreementagreements for Jorge Mas and José R. Mas, the Company made no payments in either of the three month periods ended September 30, 2017 and 2016, and paid $0.7 million in each of the nine month periods ended September 30, 2017 and 2016. In connection with the split dollar agreement for Jorge Mas, the Company paid $0.6 million for both the three month periods ended September 30, 2017 and 2016, and paid $1.1 million for both the nine month periods ended September 30, 2017 and 2016.respectively. As of SeptemberJune 30, 20172020 and December 31, 2016,2019, life insurance assets associated with these agreements totaled $16.6approximately $21.5 million and $14.8$20.3 million, respectively, which amount is included within other long-term assets.respectively.


Note 16 – Supplemental Guarantor Condensed Unaudited Consolidating Financial Information
The 4.875% Senior Notes are fully and unconditionally guaranteed on an unsecured, unsubordinated, joint and several basis by certain of the Company’s existing and future 100%-owned direct and indirect domestic subsidiaries that are each guarantors of the Credit Facility or other outstanding indebtedness (the “Guarantor Subsidiaries”). The Company’s subsidiaries organized outside of the United States and certain domestic subsidiaries (collectively, the “Non-Guarantor Subsidiaries”) do not guarantee these notes. A Guarantor Subsidiary’s guarantee is subject to release in certain customary circumstances, including upon the sale of a majority of the capital stock or substantially all of the assets of such Guarantor Subsidiary; if the Guarantor Subsidiary’s guarantee under the Company’s Credit Facility and other indebtedness is released or discharged (other than due to payment under such guarantee); or when the requirements for legal defeasance are satisfied or the obligations are discharged in accordance with the related indentures.
The following supplemental financial information sets forth the condensed unaudited consolidating balance sheets and the condensed unaudited consolidating statements of operations and comprehensive income (loss) and cash flows for MasTec, Inc., the Guarantor Subsidiaries on a combined basis, the Non-Guarantor Subsidiaries on a combined basis and the eliminations necessary to arrive at the information for the Company as reported on a consolidated basis. Eliminations represent adjustments to eliminate investments in subsidiaries and intercompany balances and transactions between or among MasTec, Inc., the Guarantor Subsidiaries and the Non-Guarantor Subsidiaries.  Investments in subsidiaries are accounted for using the equity method for this presentation.


CONDENSED UNAUDITED CONSOLIDATING STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (in millions)

For the Three Months Ended September 30, 2017MasTec, Inc. 
Guarantor
Subsidiaries
 
Non-Guarantor
Subsidiaries
 Eliminations 
Consolidated
MasTec, Inc.
Revenue$
 $1,860.3
 $130.3
 $(34.8) $1,955.8
Costs of revenue, excluding depreciation and amortization
 1,640.3
 120.7
 (34.8) 1,726.2
Depreciation and amortization
 41.1
 9.0
 
 50.1
General and administrative expenses0.5
 61.7
 4.2
 
 66.4
Interest expense (income), net
 33.2
 (15.6) 
 17.6
Equity in earnings of unconsolidated affiliates
 
 (7.4) 
 (7.4)
Other income, net
 (4.6) (0.1) 
 (4.7)
(Loss) income before income taxes$(0.5) $88.6
 $19.5
 $
 $107.6
Benefit from (provision for) income taxes0.2
 (33.8) (9.9)

 (43.4)
Net (loss) income before equity in income from subsidiaries$(0.3) $54.8
 $9.6
 $
 $64.2
Equity in income from subsidiaries, net of tax64.1
 
 
 (64.1) 
Net income (loss)$63.8
 $54.8
 $9.6
 $(64.1) $64.2
Net income attributable to non-controlling interests
 
 0.4
 
 0.4
Net income (loss) attributable to MasTec, Inc.$63.8
 $54.8
 $9.2
 $(64.1) $63.8
Comprehensive income (loss)$65.2
 $54.9
 $11.1
 $(65.5) $65.7

For the Three Months Ended September 30, 2016MasTec, Inc. 
Guarantor
Subsidiaries
 
Non-Guarantor
Subsidiaries
 Eliminations 
Consolidated
MasTec, Inc.
Revenue$
 $1,493.9
 $112.7
 $(20.4) $1,586.2
Costs of revenue, excluding depreciation and amortization
 1,282.3
 107.2
 (20.4) 1,369.0
Depreciation and amortization
 33.7
 8.9
 
 42.6
General and administrative expenses0.6
 60.6
 5.9
 
 67.1
Interest expense (income), net
 28.6
 (15.5) 
 13.1
Equity in losses of unconsolidated affiliates
 
 
 
 
Other (income) expense, net
 (3.4) 2.3
 
 (1.0)
(Loss) income before income taxes$(0.6) $92.1
 $3.9
 $
 $95.3
Benefit from (provision for) income taxes0.2
 (33.4) (5.6) 
 (38.8)
Net (loss) income before equity in income from subsidiaries$(0.4) $58.7
 $(1.7) $
 $56.5
Equity in income from subsidiaries, net of tax56.7
 
 
 (56.7) 
Net income (loss)$56.3
 $58.7
 $(1.7) $(56.7) $56.5
Net income attributable to non-controlling interests
 
 0.3
 
 0.3
Net income (loss) attributable to MasTec, Inc.$56.3
 $58.7
 $(2.0) $(56.7) $56.3
Comprehensive income (loss)$54.5
 $58.7
 $(3.6) $(54.9) $54.7


CONDENSED UNAUDITED CONSOLIDATING STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (in millions)
For the Nine Months Ended September 30, 2017MasTec, Inc. 
Guarantor
Subsidiaries
 
Non-Guarantor
Subsidiaries
 Eliminations 
Consolidated
MasTec, Inc.
Revenue$
 $4,763.4
 $347.4
 $(106.7) $5,004.1
Costs of revenue, excluding depreciation and amortization
 4,097.7
 332.6
 (106.7) 4,323.6
Depreciation and amortization
 112.2
 26.2
 
 138.4
General and administrative expenses1.7
 187.7
 12.6
 
 202.0
Interest expense (income), net
 91.5
 (46.5) 
 45.0
Equity in earnings of unconsolidated affiliates
 
 (15.1) 
 (15.1)
Other (income) expense, net
 (9.9) 5.8
 
 (4.1)
(Loss) income before income taxes$(1.7) $284.2
 $31.8
 $
 $314.3
Benefit from (provision for) income taxes0.6
 (104.9) (21.9) 
 (126.2)
Net (loss) income before equity in income from subsidiaries$(1.1) $179.3
 $9.9
 $
 $188.2
Equity in income from subsidiaries, net of tax187.5
 
 
 (187.5) 
Net income (loss)$186.4
 $179.3
 $9.9
 $(187.5) $188.2
Net income attributable to non-controlling interests
 
 1.8
 
 1.8
Net income (loss) attributable to MasTec, Inc.$186.4
 $179.3
 $8.1
 $(187.5) $186.4
Comprehensive income (loss)$187.5
 $179.3
 $11.1
 $(188.6) $189.3

For the Nine Months Ended September 30, 2016MasTec, Inc. 
Guarantor
Subsidiaries
 
Non-Guarantor
Subsidiaries
 Eliminations 
Consolidated
MasTec, Inc.
Revenue$
 $3,521.5
 $302.2
 $(30.9) $3,792.8
Costs of revenue, excluding depreciation and amortization
 3,054.5
 298.0
 (30.9) 3,321.6
Depreciation and amortization
 96.6
 25.6
 
 122.2
General and administrative expenses1.7
 172.1
 21.2
 
 195.0
Interest expense (income), net
 83.8
 (45.9) 
 37.9
Equity in earnings of unconsolidated affiliates
 
 (3.5) 
 (3.5)
Other income, net
 (12.7) (0.1) 
 (12.8)
(Loss) income before income taxes$(1.7) $127.2
 $6.9
 $
 $132.4
Benefit from (provision for) income taxes0.6
 (47.3) (7.6) 
 (54.3)
Net (loss) income before equity in income from subsidiaries$(1.1) $79.9
 $(0.7) $
 $78.1
Equity in income from subsidiaries, net of tax78.8
 
 
 (78.8) 
Net income (loss)$77.7
 $79.9
 $(0.7) $(78.8) $78.1
Net income attributable to non-controlling interests
 
 0.4
 
 0.4
Net income (loss) attributable to MasTec, Inc.$77.7
 $79.9
 $(1.1) $(78.8) $77.7
Comprehensive income (loss)$69.2
 $79.9
 $(9.2) $(70.3) $69.6





CONDENSED UNAUDITED CONSOLIDATING BALANCE SHEETS (in millions)
As of September 30 2017MasTec, Inc. 
Guarantor
Subsidiaries
 
Non-Guarantor
Subsidiaries
 Eliminations 
Consolidated
MasTec, Inc.
Assets         
Total current assets$
 $1,576.0
 $259.8
 $(88.1) $1,747.7
Property and equipment, net
 600.8
 90.6
 
 691.4
Goodwill and other intangible assets, net
 1,187.9
 143.0
 
 1,330.9
Investments in and advances to consolidated affiliates, net1,279.7
 848.0
 710.2
 (2,837.9) 
Other long-term assets15.8
 25.7
 130.6
 
 172.1
Total assets$1,295.5
 $4,238.4
 $1,334.2
 $(2,926.0) $3,942.2
Liabilities and equity         
Total current liabilities$
 $982.5
 $107.7
 $(88.1) $1,002.2
Long-term debt
 1,181.1
 11.2
 
 1,192.3
Other long-term liabilities
 432.0
 12.7
 
 444.7
Total liabilities$
 $2,595.6
 $131.6
 $(88.1) $2,639.1
Total equity$1,295.5
 $1,642.8
 $1,202.6
 $(2,837.9) $1,303.0
Total liabilities and equity$1,295.5
 $4,238.4
 $1,334.2
 $(2,926.0) $3,942.2

As of December 31, 2016MasTec, Inc. 
Guarantor
Subsidiaries
 
Non-Guarantor
Subsidiaries
 Eliminations 
Consolidated
MasTec, Inc.
Assets         
Total current assets$
 $1,256.3
 $175.8
 $(29.6) $1,402.5
Property and equipment, net
 456.6
 92.5
 
 549.1
Goodwill and other intangible assets, net
 1,037.4
 138.2
 
 1,175.6
Investments in and advances to consolidated affiliates, net1,083.9
 625.9
 861.2
 (2,571.0) 
Other long-term assets12.6
 25.3
 18.0
 
 55.9
Total assets$1,096.5
 $3,401.5
 $1,285.7
 $(2,600.6) $3,183.1
Liabilities and equity         
Total current liabilities$
 $759.7
 $109.9
 $(29.6) $840.0
Long-term debt
 938.7
 22.7
 
 961.4
Other long-term liabilities
 256.2
 21.9
 
 278.1
Total liabilities$
 $1,954.6
 $154.5
 $(29.6) $2,079.5
Total equity$1,096.5
 $1,446.9
 $1,131.2
 $(2,571.0) $1,103.6
Total liabilities and equity$1,096.5
 $3,401.5
 $1,285.7
 $(2,600.6) $3,183.1



CONDENSED UNAUDITED CONSOLIDATING STATEMENTS OF CASH FLOWS (in millions)
For the Nine Months Ended September 30, 2017MasTec, Inc. 
Guarantor
Subsidiaries
 
Non-Guarantor
Subsidiaries
 Eliminations 
Consolidated
MasTec, Inc.
Net cash provided by (used in) operating activities$
 $222.0
 $(43.4) $
 $178.6
Cash flows from investing activities:         
Cash paid for acquisitions, net of cash acquired
 (116.0) 
 
 (116.0)
Capital expenditures
 (70.0) (13.3) 
 (83.3)
Proceeds from sale of property and equipment
 12.5
 1.1
 
 13.6
Payments for other investments
 (3.8) (73.3) 
 (77.1)
Proceeds from other investments
 1.2
 12.2
 
 13.4
Net cash used in investing activities$
 $(176.1) $(73.3) $
 $(249.4)
Cash flows from financing activities:         
Proceeds from credit facilities
 1,988.1
 14.3
 
 2,002.4
Repayments of credit facilities
 (1,817.4) (23.0) 
 (1,840.4)
Repayments of other borrowings and capital lease obligations
 (52.6) (8.3) 
 (60.8)
Payments of acquisition-related contingent consideration
 (18.8) 
 
 (18.8)
Distributions to non-controlling interests
 
 (1.3) 
 (1.3)
Proceeds from stock-based awards, net0.9
 
 
 
 0.9
Other financing activities, net
 (6.3) 
 
 (6.3)
Net financing activities and advances (to) from consolidated affiliates(0.9) (131.9) 132.8
 
 
Net cash (used in) provided by financing activities$
 $(38.9) $114.5
 $
 $75.6
Effect of currency translation on cash
 
 0.2
 
 0.2
Net increase (decrease) in cash and cash equivalents$
 $7.0
 $(2.0) $
 $5.1
Cash and cash equivalents - beginning of period$
 $28.3
 $10.5
 $
 $38.8
Cash and cash equivalents - end of period$
 $35.3
 $8.5
 $
 $43.8
For the Nine Months Ended September 30, 2016MasTec, Inc. 
Guarantor
Subsidiaries
 
Non-Guarantor
Subsidiaries
 Eliminations 
Consolidated
MasTec, Inc.
Net cash provided by operating activities$
 $87.2
 $39.9
 $
 $127.1
Cash flows from investing activities:         
Cash paid for acquisitions, net of cash acquired
 (4.1) 
 
 (4.1)
Capital expenditures
 (84.0) (5.1) 
 (89.1)
Proceeds from sale of property and equipment
 3.1
 3.7
 
 6.8
Payments for other investments
 (3.8) (5.0) 
 (8.9)
Proceeds from other investments
 
 1.1
 
 1.1
Net cash used in investing activities$
 $(88.8) $(5.3)
$

$(94.1)
Cash flows from financing activities:         
Proceeds from credit facilities
 1,093.8
 93.0
 
 1,186.8
Repayments of credit facilities
 (1,056.1) (93.8) 
 (1,149.9)
Repayments of other borrowings and capital lease obligations
 (37.6) (12.4) 
 (50.0)
Payments of acquisition-related contingent consideration
 (16.5) (3.3) 
 (19.8)
Proceeds from stock-based awards, net3.4
 
 0.5
 
 3.9
Other financing activities, net1.4
 
 
 
 1.4
Net financing activities and advances (to) from consolidated affiliates(4.8) 15.1
 (10.3) 
 
Net cash used in financing activities$
 $(1.3) $(26.3) $
 $(27.6)
Effect of currency translation on cash
 
 (1.0) 
 (1.0)
Net (decrease) increase in cash and cash equivalents$
 $(2.9) $7.3
 $
 $4.4
Cash and cash equivalents - beginning of period$
 $4.7
 $0.3
 $
 $5.0
Cash and cash equivalents - end of period$
 $1.8
 $7.6
 $
 $9.4




CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS
This report contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These forward-looking statements are not historical facts but are the intent, belief, or current expectations of our business and industry and the assumptions upon which these statements are based. While management believes that these forward-looking statements are reasonable as and when made, there can be no assurance that future developments affecting us will be those that we anticipate. All comments concerning our expectations for future revenuesrevenue and operating results are based on our forecasts for our existing operations and do not include the potential impact of any future acquisitions or dispositions. Words such as “anticipates,” “expects,” “intends,” “will,” “could,” “would,” “should,” “may,” “plans,” “believes,” “seeks,” “estimates,” “forecasts,” “targets” and variations of these words and negatives thereof and similar expressions are intended to identify forward-looking statements. These statements are not guarantees of future performance and are subject to risks, uncertainties, assumptions and other factors, some of which are beyond our control, are difficult to predict, and could cause actual results to differ materially from those expressed or forecasted in the forward-looking statements. Additionally, many of these risks and uncertainties could be amplified by the ongoing COVID-19 pandemic.
These risks and uncertainties include those described in “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” and elsewhere in this report and in our 20162019 Form 10-K, including those described under “Cautionary Statement Regarding Forward-Looking Statements” and “Risk Factors,” as updated by Item 1A, “Risk Factors” in this report and other filings we make with the SEC. Forward-looking statements that were true at the time made may ultimately prove to be incorrect or false. Readers are cautioned to not place undue reliance on forward-looking statements, which reflect management’s view only as of the date of this report. We undertake no obligation to update or revise forward-looking statements to reflect changed assumptions, the occurrence of unanticipated events or changes to future operating results.
ITEM 2.MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
The following is a discussion of our business, financial positioncondition and results of operations as of and for the three and ninesix month periods ended SeptemberJune 30, 20172020 and 20162019. This discussion and analysis should be read in conjunction with our consolidated financial statements and notes thereto in Item 1 of this Quarterly Report on Form 10-Q (this “Form 10-Q”), and the audited consolidated financial statements, accompanying notes and Management’s Discussion and Analysis of Financial Condition and Results of Operations (“MD&A”) contained in our 20162019 Form 10-K. In this MD&A, “$” means U.S. dollars unless specified otherwise.
Impact of the COVID-19 Pandemic
During March 2020, a global pandemic was declared by the World Health Organization related to the rapidly growing outbreak of a novel strain of coronavirus (COVID-19), with the pandemic accelerating during the first half of March and further accelerating into July. The pandemic has significantly affected economic conditions in the United States and internationally, as federal, state and local governments reacted to the public health crisis with mitigation measures, resulting in workforce, supply chain and production disruptions, along with reduced demand and spending in many industry sectors, creating significant uncertainties in the U.S. economy. Although efforts have been undertaken to reduce restrictions on economic and social activities that were put in place as part of the initial response to the pandemic, it is currently unclear the extent to which increased social interaction will adversely affect efforts to reduce the COVID-19 pandemic’s health and other effects, whether additional or renewed restrictions will be implemented and/or how long an economic recovery could take. The extent to which the COVID-19 pandemic could affect our business, operations and financial results will depend upon numerous evolving factors, including the length and extent of the economic and market disruption, that we may not be able to accurately predict.
Most of our construction services have been and currently are deemed essential under state and local pandemic mitigation orders and all of our business segments continue to operate. The COVID-19 pandemic has had a negative impact on our operations and we expect some continued negative impact for the remainder of 2020.As our services have been deemed essential, our customers have generally directed us, where safe and possible, to maintain normal work schedules. Our top priority has been to take appropriate actions to protect the health and safety of our employees, customers and business partners. We have adjusted our standard operating procedures within our business operations to ensure continued employee and customer safety and are continually monitoring evolving health guidelines and responding to changes as appropriate. These procedures include implementation of appropriate distancing programs and required use of certain personal protective equipment for our crew operations, as well as appropriate sanitation measures for key equipment and facilities. We have also incorporated work at home programs and in-office social distancing and health safety measures where necessary for our administrative offices.
The COVID-19 pandemic has had a negative impact on our operations and may continue to affect our future business activities for an indefinite period of time. These impacts include lost productivity from governmental permitting approval delays, reduced crew productivity due to social distancing, other mitigation measures or other factors, the health and availability of work crews or other key personnel, including subcontractors or supply chain disruptions, higher operating costs and lower levels of overhead cost absorption, and/or delayed project start dates or project shutdowns or cancellations that may be mandated or requested by governmental authorities or others. To the extent that future business activities are adversely affected by the pandemic, we intend to take appropriate actions designed to mitigate these impacts; however, there can be no assurance that we will be successful in these efforts.
Additionally, potential disruptions in future economic activity as a result of the COVID-19 pandemic may have adverse effects across our end markets, including in the oil and gas sector. Given the uncertainty regarding the magnitude and duration of the pandemic’s effects, we are unable to predict with specificity or quantify any potential future impact on our business, financial condition and/or results of operations.
As of June 30, 2020, we maintained a strong balance sheet, have strong relationships with our banking partners and had ample liquidity totaling approximately $1,092 million, comprising $1,043 million of availability under our Credit Facility and $49 million of cash. We believe that our financial position, strong cash flows and operational strengths will enable us to manage the current challenges and uncertainties resulting from the COVID-19 pandemic. Our business operations typically generate significant cash flow, affording us the flexibility to invest strategically in our efforts to maximize shareholder value through mergers and acquisitions, share repurchases and capital expenditures. We are carefully managing liquidity and are monitoring


any potential effects from the pandemic on our financial results, cash flows and/or working capital and intend to take appropriate actions in efforts to mitigate any impacts; however, there can be no assurance that we will be successful in these efforts.
Business Overview
We are a leading infrastructure construction company operating mainly throughout North America across a range of industries. Our primary activities include the engineering, building, installation, maintenance and upgrade of communications, energy, utility and utilityother infrastructure, such as: wireless, wireline/fiber install-to-the-home and customer fulfillment activities; petroleum and natural gas pipeline infrastructure; electrical utility transmission and distribution; conventional andpower generation, including from renewable power generation;sources; heavy civilcivil; and industrial infrastructure. Our customers are primarily in these industries. Including our predecessor companies, we have been in business for almostover 90 years. For the twelve month period ended June 30, 2020, we had an average of approximately 19,000 employees and 380 locations. We offer our services primarily under the MasTec service mark and, as of September 30, 2017, we had approximately 21,500 employees and 415 locations.mark. We have been consistently ranked among the top specialty contractors by Engineering News-Record for the past several years.
We provide our services to a diversified base of customers. We often provide services under master service and other service agreements, which are generally multi-year agreements. The remainder of our work is generated pursuant to contracts for specific projects or jobs that require the construction or installation of an entire infrastructure system or specified units within an infrastructure system. Revenue from non-recurring, project specific work may experience greater variability than master service and other service agreement work due to the need to replace the revenue as projects are completed. If we are not able to replace work from completed projects with new project work, we may not be able to maintain our current revenue levels or our current level of capacity and resource utilization. We actively review our backlog of project work and take appropriate action to minimize such exposure.
We manage our operations under five operating segments, which represent our five reportable segments: (1) Communications; (2) Oil and Gas; (3) Electrical Transmission; (4) Power GenerationClean Energy and IndustrialInfrastructure and (5) Other. This structure is generally focused on broad end-user markets for our labor-based construction services. During the second quarter of 2020, we renamed our Power Generation and Industrial segment as the Clean Energy and Infrastructure segment to better represent the nature of the segment’s operations, end markets and customer characteristics. There was no change to the composition of the segment or its historical results. See Note 13 - Segments and Related Information and Note 14 - Commitments and Contingencies in the notes to the condensed unaudited consolidated financial statements, which are incorporated by reference, for segment related information as well as operating results by segment and significant customer concentrations.
Backlog
Estimated backlog represents the amount of revenue we expect to realize over the next 18 months from future work on uncompleted construction contracts, including new contracts under which work has not begun, as well as revenue from change orders and renewal options. Our estimated backlog also includes amounts under master service and other service agreements and includes our proportionate share of estimated revenue from proportionately consolidated non-controlled contractual joint ventures. Estimated backlog for work under master service and other service agreements is determined based on historical trends, anticipated seasonal impacts, experience from similar projects and estimates of customer demand based on communications with our customers. WeBased on current expectations of our customers’ requirements, we expect to realize approximately 25%45% of our Septemberestimated June 30, 2017 estimated2020 backlog in 2017.2020. The following table presents 18-month estimated backlog by reportable segment, as of the dates indicated:


Reportable Segment (in millions):September 30,
2017
 June 30,
2017
 September 30,
2016
June 30,
2020
 March 31,
2020
 June 30,
2019
Communications$3,505
 $3,375
 $3,125
$3,915
 $3,987
 $4,120
Oil and Gas907
 1,506
 1,134
2,659
 2,597
 2,515
Electrical Transmission268
 295
 269
551
 434
 489
Power Generation and Industrial331
 85
 116
Clean Energy and Infrastructure1,042
 1,307
 645
Other3
 4
 7
1
 1
 1
Estimated 18-month backlog$5,014
 $5,265
 $4,651
$8,168
 $8,326
 $7,770
Approximately 65%45% of our backlog as of SeptemberJune 30, 20172020 is attributable to amounts under master service or other service agreements, pursuant to which our customers are not contractually committed to purchase a minimum amount of services. Most of these agreements can be canceled on short or no advance notice. Timing of revenue for construction and installation projects included in our backlog can be subject to change as a result of customer delays or cancellations, regulatory factorsor other delays, including from the potential adverse effects of the COVID-19 pandemic on economic activity, and/or other project-related factors. These changes could cause estimated revenue to be realized in periods later than originally expected, or not at all. In the past, we haveWe occasionally experiencedexperience postponements, cancellations and reductions in expected future work from master service agreements and/or construction projects due to changes in our customers’ spending plans, as well as on construction projects due to market volatility, and regulatory delays and/or other factors. There can be no assurance as to our customers’ requirements or the accuracy of our estimates. As a result, our backlog as of any particular date is an uncertain indicator of future revenue and earnings.
Subsequent to September 30, 2017, we were granted a large pipeline construction project award with an expected contract value of over $1.5 billion, which is expected to be reflected in backlog at year-end 2017.
Backlog is not a term recognized under U.S. GAAP; however, it is a common measurement used in our industry. Our methodology for determining backlog may not, however, be comparable to the methodologies used by others. Backlog differs from the amount of our remaining performance obligations, which are described in Note 1 - Business, Basis of Presentation and Significant Accounting Policies in the notes to the consolidated financial statements, which is incorporated by reference. As of June 30, 2020, total 18-month backlog differed from the amount of our remaining performance obligations due primarily to the inclusion of $3.7 billion of estimated future revenue under master service and other service agreements within our backlog estimates, as described above, and the exclusion of approximately $0.8 billion of remaining performance obligations and estimated future revenue under master service and other service agreements in excess of 18 months, which amount is not included in the backlog estimates above. Backlog expected to be realized in 2020 differed from the amount of remaining performance obligations expected to be recognized for the same period due primarily to the inclusion of approximately $0.7 billion of estimated future revenue under master service and other service agreements that is included within the related backlog estimate.
Economic, Industry and Market Factors
WeIn addition to the effects of the pandemic noted above, we closely monitor the effects thatof changes in economic and market conditions may have on our customers. General economic and market conditions can negatively affect demand for our customers’ products and services, which can lead to rationalization ofaffect our


customers’ planned capital and maintenance budgets in certain end-markets. Market, regulatory and industry factors could affect demand for our services, including (i) changes to our customers’ capital spending plans, including any potential effects from public health issues, such as the recent COVID-19 pandemic; (ii) economic or market developments, including access to capital for customers in the industries we serve; (iii) new or changing regulatory requirements or other governmental policy changes or political developments or uncertainty; (iv) changes in technology, tax and other incentives; and (v) mergers and acquisitions among the customers we serve. Fluctuations in market prices for oil, gas and other fuel sources and availability of transportation and transmission capacity can also affect demand for our services, in particular, on pipeline and power generation construction services.projects. These fluctuations, as well as the highly competitive nature of our industry, can result and in the past, have resulted, in lower bidslevels of activity and lower profit on the services we provide. In the face of increased pricing pressure or other market developments, we strive to maintain our profit margins through productivity improvements, and cost reduction programs. Other market, regulatory and industry factors, such as (i) changes to our customers’ capital spending plans; (ii) mergers and acquisitions among the customers we serve; (iii) access to capital for customers in the industries we serve; (iv) new programs and/or changing regulatory requirements or other governmental policy uncertainty; (v) economic, market or political developments; and (vi) changes in technology, tax and other incentives could also increase or reduce demand for our services.business streamlining efforts. While we actively monitor economic, industry and market factors that could affect our business, we cannot predict the effect that changes in such factors may have on our future results of operations, liquidity and cash flows, and we may be unable to fully mitigate, or benefit from, such changes.
ImpactEffect of Seasonality and Cyclical Nature of Business
Our revenue and results of operations can be subject to seasonal and other variations. These variations are influenced by weather, customer spending patterns, bidding seasons, project schedules, andpublic health matters, holidays and/or timing, in particular, for large non-recurring projects and holidays.projects. Typically, our revenue is lowest inat the first quarterbeginning of the year and during the winter months because cold, snowy or wet conditions cause project delays. Revenue is generally higher during the summer and fall months due to increased demand for our services when favorable weather conditions exist in many of the second quarter is typically higher thanregions in the first quarter, as some projects begin,which we operate, but continued cold and wet weather can often impactaffect second quarter productivity. The third and fourth quarters are typically the most productive quarters of the year, as a greater number of projects are underway and weather is normally more accommodating to construction projects. In the fourth quarter, many projects tend to be completed by customers seeking to spend their capital budgets before the end of the year, which generally has a positive impacteffect on our revenue. However, the holiday season and inclement weather can cause delays, which can reduce revenue and increase costs on affected projects. Any quarter may be positively or negatively affected by adverse or unusual weather patterns, including warm winter weather, excessive rainfall, flooding or natural catastrophes such as hurricanes or other severe weather, making it difficult to predict quarterly revenue and margin variations.
Additionally, our industry can be highly cyclical. Fluctuations in end-user demand within the industries we serve, or in the supply of services within those industries, can impactaffect demand for our services. As a result, our business may be adversely affected by industry declines or by delays in new projects. Variations in project schedules or unanticipated changes in project schedules, in particular, in connection with large construction and installation projects, can create fluctuations in revenue, which may adversely affect us in a given period,quarter, even if not in total.for the full year. In addition, revenue from master service and other service agreements, while generally predictable, can be subject to volatility. The financial condition of our customers and their access to capital; variations in project margins; regional, national and global economic, political and market conditions; regulatory or environmental influences; and acquisitions, dispositions or strategic investments/other arrangements can also materially affect quarterly results in a given period. Accordingly, our operating results in any particular period may not be indicative of the results that can be expected for any other period. The effects of the COVID-19 pandemic could also result in greater seasonal and cyclical volatility than would otherwise exist under normal conditions.
Critical Accounting Estimates
This discussion and analysis of our financial condition and results of operations is based upon our condensed unaudited consolidated financial statements, which have been prepared in accordance with U.S. GAAP. The preparation of our consolidated financial statements requires the use of estimates and assumptions that affect the amounts reported in our condensed unaudited consolidated financial statements and the accompanying notes.


We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances, including the resultspotential future effects of whichthe COVID-19 pandemic and other relevant global events. These estimates form the basis offor making judgments about our operating results, including the results of percentage-of-completion projects,construction contracts accounted for under the cost-to-cost method, and the carrying values of assets and liabilities, that are not readily apparent from other sources. Given that management estimates, by their nature, involve judgments regarding future uncertainties, actual results may differ from these estimates if conditions change or if certain key assumptions used in making these estimates ultimately prove to be inaccurate. Our accounting policies and critical accounting estimates are reviewed periodically by the Audit Committee of the Board of Directors. Refer to Note 1 - Business, Basis of Presentation and Significant Accounting Policies in the notes to our condensed unaudited consolidated financial statements, which is incorporated by reference, and to our 2016 Form 10-K for discussion of our significant accounting policies.
During the thirdsecond quarter of 2017, we performed a quantitative assessment of the goodwill and an indefinite-lived pre-qualification intangible asset associated with certain of our operating segments2020, in conjunction with our quarterly review of reporting units for indicators of impairment.impairment, we performed quantitative assessments of the goodwill associated with three reporting units within our Oil and Gas segment, and one reporting unit within our Communications segment. Based on the results of these assessments, we determined that the estimated fair value of one of the reporting units in our Electrical Transmission operatingOil and Gas segment, for which the related goodwill had a carrying value of approximately $15 million, exceeded its carrying value by approximately 10%, and that the estimated fair value of a separate reporting unit, for which the related goodwill had a carrying value of approximately $14 million, exceeded its carrying value by approximately 9%. The estimated fair values of two of ourthe remaining reporting units and the indefinite-lived pre-qualification intangible assetunit in our Oil and Gas segment for whichand the carrying values totaled approximately $130 million, exceededreporting unit in our Communications segment were determined to substantially exceed their carrying values byvalues. In addition, as previously reported, during the first quarter of 2020, we reclassified a pre-qualification intangible asset within each of our Oil and Gas and Electrical Transmission segments from indefinite-lived to finite-lived. These assets, which had a combined carrying value of approximately 10% for each.$70 million and an estimated remaining weighted average useful life of approximately 12 years at the time of reclassification, are being amortized on an accelerated basis. Significant changes in the assumptions or estimates used in management’s assessment, such as a reduction in profitability and/or cash flows, could result in non-cash goodwill and indefinite-lived intangible asset impairment charges in the future.
We believe that our accounting estimates pertaining to: the recognition of revenue recognition for percentage-of-completion projects, includingand project profit or loss, which we define as project revenue, less project costs of revenue, including project-related depreciation; allowancesdepreciation, in particular, on construction contracts accounted for doubtful accounts;under the cost-to-cost method, for which the recorded amounts require estimates of costs to complete and the amount and probability of variable consideration included in the contract transaction price; fair value estimates, including those related to business acquisitions, valuations of goodwill, and indefinite-lived intangible assets; estimated liabilities for future earn-out obligations; fair values of financial instruments;assets and acquisition-related contingent consideration; income taxes; self-insurance liabilities; and litigation and other contingencies, are the most critical in the preparation of our consolidated financial statements as they are important to the portrayal of our financial condition and require significant or complex judgment and estimates on the part of management. Actual results could, however, vary materially from these accounting estimates.


Refer to Note 1 - Business, Basis of Presentation and Significant Accounting Policies in the notes to the consolidated financial statements, which is incorporated by reference, and to our 2019 Form 10-K for discussion of our significant accounting policies.
Results of Operations
Comparison of Quarterly Results
The following table, which may contain slight summation differences due to rounding, reflects our consolidated results of operations in dollar and percentage of revenue terms for the periods indicated (dollar amounts in millions). Our consolidated results of operations are not necessarily comparable from period to period due to the impacteffect of recent acquisitions and certain other items, which are described in the comparison of results section below.
For the Three Months Ended
September 30
 
For the Nine Months Ended
September 30
For the Three Months Ended June 30, For the Six Months Ended June 30,
2017 2016 2017 20162020 2019 2020 2019
Revenue$1,955.8
 100.0 % $1,586.2
 100.0 % $5,004.1
 100.0 % $3,792.8
 100.0 %$1,569.3
 100.0 % $1,939.0
 100.0 % $2,985.9
 100.0 % $3,457.3
 100.0 %
Costs of revenue, excluding depreciation and amortization1,726.2
 88.3 % 1,369.0
 86.3 % 4,323.6
 86.4 % 3,321.6
 87.6 %1,341.8
 85.5 % 1,633.4
 84.2 % 2,568.1
 86.0 % 2,945.4
 85.2 %
Depreciation and amortization50.1
 2.6 % 42.6
 2.7 % 138.4
 2.8 % 122.2
 3.2 %
Depreciation57.7
 3.7 % 55.3
 2.9 % 110.8
 3.7 % 109.5
 3.2 %
Amortization of intangible assets9.8
 0.6 % 4.7
 0.2 % 17.2
 0.6 % 9.5
 0.3 %
General and administrative expenses66.4
 3.4 % 67.1
 4.2 % 202.0
 4.0 % 195.0
 5.1 %85.0
 5.4 % 70.8
 3.7 % 170.5
 5.7 % 143.4
 4.1 %
Interest expense, net17.6
 0.9 % 13.1
 0.8 % 45.0
 0.9 % 37.9
 1.0 %14.8
 0.9 % 16.6
 0.9 % 31.8
 1.1 % 38.9
 1.1 %
Equity in earnings of unconsolidated affiliates(7.4) (0.4)% 
  % (15.1) (0.3)% (3.5) (0.1)%(6.8) (0.4)% (6.6) (0.3)% (14.6) (0.5)% (12.8) (0.4)%
Other income, net(4.7) (0.2)% (1.0) (0.1)% (4.1) (0.1)% (12.8) (0.3)%
Other (income) expense, net(10.5) (0.7)% 4.8
 0.2 % (11.9) (0.4)% 8.3
 0.2 %
Income before income taxes$107.6
 5.5 % $95.3
 6.0 % $314.3
��6.3 % $132.4
 3.5 %$77.6
 4.9 % $160.0
 8.2 % $114.1
 3.8 % $215.1
 6.2 %
Provision for income taxes(43.4) (2.2)% (38.8) (2.4)% (126.2) (2.5)% (54.3) (1.4)%(20.7) (1.3)% (39.7) (2.0)% (21.2) (0.7)% (51.8) (1.5)%
Net income$64.2
 3.3 % $56.5
 3.6 % $188.2
 3.8 % $78.1
 2.1 %$56.8
 3.6 % $120.2
 6.2 % $92.9
 3.1 % $163.3
 4.7 %
Net income attributable to non-controlling interests0.4
 0.0 % 0.3
 0.0 % 1.8
 0.0 % 0.4
 0.0 %
Net (loss) income attributable to non-controlling interests(0.2) (0.0)% 0.5
 0.0 % (0.3) (0.0)% 0.5
 0.0 %
Net income attributable to MasTec, Inc.$63.8
 3.3 % $56.3
 3.5 % $186.4
 3.7 % $77.7
 2.0 %$57.0
 3.6 % $119.7
 6.2 % $93.2
 3.1 % $162.8
 4.7 %


We review our operating results by reportable segment. See Note 13 - Segments and Related Information in the notes to the condensed unaudited consolidated financial statements, which is incorporated by reference. Our reportable segments are: (1) Communications; (2) Oil and Gas; (3) Electrical Transmission; (4) Power GenerationClean Energy and IndustrialInfrastructure and (5) Other. Management’s review of reportable segment results includes analyses of trends in revenue, EBITDA and EBITDA margin. We calculate EBITDA for segment reporting purposes consistentis calculated consistently with our consolidated EBITDA calculation. See the discussion of our non-U.S. GAAP financial measures, including certain adjusted non-U.S. GAAP measures, as described, following the comparison of results discussion below. The following table presents revenue, EBITDA and EBITDA margin by reportable segment for the periods indicated (dollar amounts in millions):

Revenue EBITDA and EBITDA MarginRevenue EBITDA and EBITDA Margin
For the Three Months Ended September 30 For the Nine Months Ended September 30 For the Three Months Ended September 30 For the Nine Months Ended September 30For the Three Months Ended June 30, For the Six Months Ended June 30, 
For the Three Months Ended
June 30,
 
For the Six Months Ended
June 30,
Reportable Segment:2017 2016 2017 2016 2017 2016 2017 20162020 2019 2020 2019 2020 2019 2020 2019
Communications$610.5
 $624.3
 $1,762.2
 $1,728.0
 $65.3
 10.7% $62.8
 10.1 % $173.2
 9.8% $190.9
 11.0 %$654.3
 $652.6
 $1,298.4
 $1,265.4
 $76.4
 11.7 % $52.4
 8.0% $127.2
 9.8% $97.8
 7.7%
Oil and Gas1,161.0
 736.0
 2,757.2
 1,454.3
 108.1
 9.3% 117.8
 16.0 % 356.1
 12.9% 187.6
 12.9 %368.5
 936.8
 727.6
 1,558.1
 80.1
 21.7 % 179.3
 19.1% 154.5
 21.2% 286.7
 18.4%
Electrical Transmission81.8
 101.7
 277.3
 283.6
 4.5
 5.5% (8.3) (8.1)% 11.2
 4.0% (42.0) (14.8)%124.1
 100.4
 252.2
 195.3
 (3.2) (2.6)% 8.7
 8.6% 5.1
 2.0% 12.4
 6.4%
Power Generation and Industrial96.9
 123.6
 204.1
 324.7
 9.3
 9.6% 6.1
 4.9 % 14.8
 7.3% 13.8
 4.3 %
Clean Energy and Infrastructure426.1
 250.2
 712.4
 439.6
 30.1
 7.1 % 8.9
 3.5% 35.0
 4.9% 12.1
 2.8%
Other10.6
 7.6
 14.2
 14.9
 10.1
 95.2% (3.1) (40.6)% 11.6
 81.7% (2.6) (17.4)%0.1
 0.0
 0.1
 0.1
 7.5
 NM
 6.4
 NM
 14.9
 NM
 12.7
 NM
Eliminations(5.0) (7.0) (10.9) (12.7) 
 
 
 
 
 
 
 
(3.8) (1.0) (4.8) (1.2) 
 
 
 
 
 
 
 
Corporate
 
 
 
 (22.0) NA (24.3) NA (69.2) NA (55.1) NA
 
 
 
 (31.0) 
 (19.2) 
 (62.9) 
 (48.7) 
Consolidated Results$1,955.8
 $1,586.2
 $5,004.1
 $3,792.8
 $175.3
 9.0% $151.0
 9.5 % $497.7
 9.9% $292.6
 7.7 %$1,569.3
 $1,939.0
 $2,985.9
 $3,457.3
 $159.9
 10.2 % $236.5
 12.2% $273.8
 9.2% $373.0
 10.8%
The following discussion and analysis of our results of operations should be read in conjunction with our condensed unaudited consolidated financial statements and notes thereto in Item 1 of this Quarterly Report on Form 10-Q (this “Form 10-Q”).NM - Percentage is not meaningful
Three Months Ended SeptemberJune 30, 20172020 Compared to Three Months Ended SeptemberJune 30, 20162019
Revenue. For the three month period ended SeptemberJune 30, 2017,2020, consolidated revenue increased to $1,956totaled $1,569 million from $1,586as compared with $1,939 million an increasefor the same period in 2019, a decrease of $370 million, or 23%19%. Revenue increases in our Clean Energy and Infrastructure segment of $176 million, or 70%, our Electrical Transmission segment of $24 million, or 24%, and our Communications segment of $2 million, were offset by a decrease in revenue in our Oil and Gas segment of $568 million, or 61%. Acquisitions contributed $64 million in revenue for the three month period ended June 30, 2020, and organic revenue decreased by approximately $433 million, or 22%, as compared with the same period in 2016, driven largely by our Oil and Gas segment, for which revenue increased by $425 million, or 58%, offset, in part by lower revenue in our Power Generation and Industrial, Electrical Transmission and Communications segments, of $61 million in total, or 7%. Organic revenue increased by approximately $308 million, or 19%, and acquisitions contributed $62 million in revenue.2019.

Communications Segment. Communications revenue was $610$654 million for the three month period ended SeptemberJune 30, 2017,2020, as compared with $624$653 million for the same period in 2016, a decrease2019, an increase of $14 million, or 2%.$2 million. Acquisitions contributed $38$40 million of revenue which was offset by a decrease infor the three month period ended June 30, 2020, and organic revenue of $51decreased by approximately $38 million or 8%.as compared with the same period in 2019. The decrease in organic revenue was primarily driven by lower levelsa continued decrease in install-to-the-home revenue, including as a result of install-to-the-home and customer fulfillment revenue in 2017, as previously disclosed.the COVID-19 pandemic.
Oil and Gas Segment. Oil and Gas revenue was $1,161$369 million for three month period ended SeptemberJune 30, 2017,2020, as compared with $736$937 million for the same period in 2016, an increase2019, a decrease of $425$568 million, or 58%61%. The increase in Oilexpected decrease was primarily due to lower levels of project activity and Gas revenue was driven primarily by an increase in multiple large long-haulmix, including the effects of regulatory disruptions on certain pipeline construction projects.activity.
Electrical Transmission Segment. Electrical Transmission revenue was $82$124 million for the three month period ended SeptemberJune 30, 2017,2020 as compared with $102$100 million for the same period in 2016, a decrease2019, an increase of $20$24 million, or 20%24%, drivendue primarily byto higher levels of project activityactivity.
Clean Energy and timing.
Power GenerationInfrastructure Segment. Clean Energy and Industrial Segment. Power Generation and IndustrialInfrastructure revenue was $97$426 million for the three month period ended SeptemberJune 30, 2017,2020 as compared with $124$250 million for the same period in 2016, a decrease2019, an increase of $27$176 million, or 22%70%. Acquisitions contributed $25 million ofOrganic revenue which was offsetincreased by a decrease in organic revenue of $51$152 million, or 42%. The decrease61%, for the three month period ended June 30, 2020 as compared with the same period in organic revenue was driven2019, due primarily by lowerto higher levels of renewable power project activity and timing.
Other Segment. Other segment revenue totaled $11activity. Acquisitions contributed $23 million for the three month period ended SeptemberJune 30, 2017, as compared with $8 million for the same period in 2016, an increase of approximately $3 million, or 40%, driven primarily by increased levels of activity from our oil and gas operations in Mexico, offset by a decrease in revenue from a proportionately consolidated non-controlled Canadian joint venture.2020.
Costs of revenue, excluding depreciation and amortization. Costs of revenue, excluding depreciation and amortization, increaseddecreased by $357approximately $292 million, or 26%18%, to $1,726from $1,633 million for the three month period ended SeptemberJune 30, 2017, as compared with $1,3692019 to $1,342 million for the same period in 2016. Higher2020. Lower levels of revenue contributed $319a decrease of $311 million of an increase in costs of revenue, excluding depreciation and amortization, whereas decreasedreduced productivity resulted incontributed an increase of approximately $38$20 million. Costs of revenue, excluding depreciation and amortization, as a percentage of revenue increased by approximately 200130 basis points, from 86.3%84.2% of revenue for the three month period ended SeptemberJune 30, 20162019 to 88.3%85.5% of revenue for the same period in 2017. The basis point increase was driven by reduced project efficiencies and mix in our Oil and Gas segment, offset, in part, by improved project efficiencies and mix in our Communications, Electrical Transmission and Power Generation and Industrial segments. Additionally, costs of revenue, excluding depreciation and amortization, improved in our Other segment for the three month period ended September 30, 2017 as compared with the same period in 20162020, primarily due to a reduction inthe mix of project losses on a proportionately consolidated non-controlled Canadian joint venture, which totaled $0.4 million foractivity, the three month period ended September 30, 2017 as compared with $5 million inimpact of the prior year period. This project, which is managed by a third partyCOVID-19 pandemic and for which we have minimal direct construction involvement, has experienced delays, which has extended the timeline and resulted in project losses.lower levels of revenue.
Depreciation.Depreciation and amortization. Depreciation and amortization was $50$58 million, or 2.6%3.7% of revenue, for the three month period ended SeptemberJune 30, 20172020, as compared with $43$55 million, or 2.7%2.9% of revenue, for the same period in 2016,2019, an increase of $8$2 million, or 18%4%. Acquisitions contributed $4$2 million of incremental depreciation and amortization for the three month period ended SeptemberJune 30, 2017 as compared with the same period in 2016.2020. As a percentage of revenue, depreciation and amortization decreased slightlyincreased by approximately 80 basis points due primarily to higherlower levels of revenue.

General and administrative expenses. General and administrative expenses were $66Amortization of intangible assets. Amortization of intangible assets was $10 million, or 3.4%0.6% of revenue, for the three month period ended SeptemberJune 30, 2017,2020, as compared with $67$5 million, or 4.2%0.2% of revenue, for the same period in 2016, a decrease2019, an increase of $1approximately $5 million, or 1%110%. Acquisitions contributed $6$3 million of incrementalintangible asset amortization for the three month period ended June 30, 2020. As a percentage of revenue, amortization of intangible assets increased by 40 basis points due to lower levels of revenue, as well as the effects of acquisitions and a change in amortization policy for certain intangible assets.
General and administrative expenses. General and administrative expenses were $85 million, or 5.4% of revenue, for the three month period ended June 30, 2020, as compared with $71 million, or 3.7% of revenue, for the same period in 2019, an increase of $14 million, or 20%. Acquisitions contributed $5 million of general and administrative expenses for the three month period ended SeptemberJune 30, 2017, whereas2020. Excluding the effects of acquisitions, general and administrative expenses for the three month period ended June 30, 2020 increased, primarily due to the effect of timing of legal and settlement matters and provisions for potential credit losses, offset, in part, by reductions in professional fees, travel expense and incentive and compensation expense as compared with the same period in the prior yearyear. Overall, general and administrative expenses as a percentage of revenue increased by approximately 180 basis points for the three month period included certain restructuringended June 30, 2020 as compared with the same period in 2019, due primarily to lower levels of revenue.
Interest expense, net. Interest expense, net of interest income, was $15 million, or approximately 0.9% of revenue, for the three month period ended June 30, 2020 as compared with $17 million, or 0.9% of revenue, for the same period in 2019. The decrease related primarily to a reduction in interest expense from credit facility activity as well as a decrease in discount charges on financing arrangements for trade receivables, offset, in part, by the effect of approximatelya second quarter 2019 arbitration award, under which we recovered $5 million related to our efforts to streamline our western Canadian oil and gas and our electrical transmission operations, which efforts were substantially completed in 2016. Excluding the effects of the above mentioned items, administrative expensesinterest costs. Interest expense from credit facility activity decreased by $2approximately $6 million as compared with the same period in the prior year due primarily to the timinga combination of legal matterslower average balances and other settlements. Overall, general and administrative expenses as a percentage of revenue decreased by 80 basis points for the three month period ended September 30, 2017 as compared with the same period in the prior year, due primarily to improvements in overhead cost utilization from higher levels of revenue.lower interest rates.
Interest expense, net. Interest expense, net of interest income, was $18 million, or 0.9% of revenue, for the three month period ended September 30, 2017 as compared with $13 million, or 0.8% of revenue, in 2016. The increase in interest expense was primarily due to higher levels of financing costs, including discount charges on financing arrangements, as well as an increase in interest expense on our Credit Facility in the third quarter of 2017 as compared with 2016.
Equity in earnings of unconsolidated affiliates. Equity in earnings or losses of unconsolidated affiliates includes our share of income or losses from equity investees. For both the three month periodperiods ended SeptemberJune 30, 2017,2020 and 2019, equity in earnings from unconsolidated affiliates wastotaled approximately $7 million, and related primarily to our investments in the Waha JVs, which commenced operationsas well as investments in 2017.certain telecommunications entities.
Other income,(income) expense, net. Other income,(income) expense, net, consists primarily of gains or losses from sales of, or changes in estimated recoveries from, assets and investments, certain legal/other settlements and gains or losses from changes to estimated earn-out accruals, and certain restructuring charges related to losses on disposal of excess fixed assets. For the three month period ended September 30, 2017, otheraccruals. Other income, net, was $5 million, as compared with $1 million for the same period in the prior year. Other income, net, for the three month period ended September 30, 2017 included approximately $3 million of income from changes to estimated earn-out accruals. Gains on sales of equipment, net, totaled $2 million and $1 million for the three month periods ended September 30, 2017 and 2016, respectively.
Provision for income taxes. Income tax expense was $43$11 million for the three month period ended SeptemberJune 30, 20172020, as compared with $39$5 million of other expense, net for the same period in 2019. For the three month period ended June 30, 2020, other income, net, included approximately $6 million of gains on sales of equipment, net, and $4 million, net, of income from changes in the fair value of certain investments. For the three month period ended June 30, 2019, other expense, net, included approximately $29 million of expense from changes to estimated earn-out accruals, net, offset, in part, by $19 million of income from a second quarter 2019 arbitration award and $4 million of gains on sales of equipment, net.
Provision for income taxes. Income tax expense was $21 million for the three month period ended June 30, 2020, as compared with income tax expense of $40 million for the same period in the prior year.2019. In the thirdsecond quarter of 2017, we had2020, pre-tax income of $108decreased to $78 million as compared with $95$160 million for the same period in the prior year. Our effective tax rate increased to 26.7% for the three month period ended SeptemberJune 30, 2017 decreased versus2020 from 24.8% for the same period in 2016,2019, primarily due toas a result of the benefit in the 2019 period of foreign tax credits that were recognized during the third quarter of 2017, offset by the effect of lossesrate changes and a reduction in foreign jurisdictions.earnings.

Analysis of EBITDA by Segment
Communications Segment. EBITDA for our Communications segment was $65$76 million, or 10.7%11.7% of revenue, for the three month period ended SeptemberJune 30, 2017,2020, as compared with $63$52 million, or 10.1%8.0% of revenue, for the same period in 2016,2019, an increase of approximately $3$24 million, or 4%. The increase was46%, primarily due to productionimproved productivity from project mix and efficiencies. As a percentage of revenue, EBITDA increased by approximately 360 basis points.
Oil and Gas Segment. EBITDA for our Oil and Gas segment was $108$80 million, or 9.3%21.7% of revenue, for the three month period ended SeptemberJune 30, 2017,2020, as compared with $118$179 million, or 16.0%19.1% of revenue, for the same period in 2016,2019, a decrease of $99 million, or 55%. Lower levels of revenue contributed a decrease in EBITDA of $10$109 million, or approximately 8%. Higher revenuewhereas improved productivity contributed an increase in EBITDA of $68 million, which was offset by a decrease in EBITDA from lowerapproximately $10 million. EBITDA margins increased by approximately 260 basis points due primarily to reducedimproved project efficiencies, closeouts and mix.
Electrical Transmission Segment. EBITDA for our Electrical Transmission segment was $5negative $3 million, or 5.5%negative 2.6% of revenue, for the three month period ended SeptemberJune 30, 2017,2020, as compared with EBITDA of negative $8$9 million, or negative 8.1%8.6% of revenue, for the same period in 2016, for an improvement2019, a decrease in EBITDA of $13 million. The improvement in Electrical Transmissionapproximately $12 million, or 137%. As a percentage of revenue, EBITDA wasdecreased by approximately 1,120 basis points, or approximately $14 million, due primarily to a combination ofreduced project efficiencies, closeouts and mix, the non-recurrencemix. Higher levels of revenue contributed an increase in EBITDA of approximately $4 million of restructuring charges for the three month period ended September 30, 2016,$2 million.
Clean Energy and improved cost and overhead utilization.
Power Generation and IndustrialInfrastructure Segment. EBITDA for our Power GenerationClean Energy and IndustrialInfrastructure segment was $9$30 million, or 9.6%7.1% of revenue, for the three month period ended SeptemberJune 30, 2017,2020, as compared with EBITDA of $6$9 million, or 4.9%3.5% of revenue, for the same period in 2016,2019, an improvementincrease in EBITDA of $3approximately $21 million, or 52%239%. As a percentage of revenue, segment EBITDA improvedincreased by approximately 470350 basis points, or $15 million, due to improved project efficiencies, closeouts and mix. Higher levels of revenue contributed an increase in EBITDA of approximately $6 million.
Other Segment. EBITDA from Other businesses was $8 million for the three month period ended June 30, 2020 as compared with $6 million for the same period in 2019, and related primarily to equity in earnings from our investments in the Waha JVs.
Corporate. Corporate EBITDA was negative $31 million for the three month period ended June 30, 2020, as compared with EBITDA of negative $19 million for the same period in 2019, for a decrease in EBITDA of approximately $12 million. Corporate EBITDA for the three month period ended June 30, 2019 included approximately $29 million of expense related to changes in estimated earn-out accruals, offset, in part, by approximately $25 million of recovery of legal costs and other income from a second quarter 2019 arbitration award. Excluding the effects of these items, other corporate expenses for the three month period ended June 30, 2020 increased by approximately $16 million as compared with the same period in the prior year, primarily due to the effects of legal and settlement matter timing and provisions for potential credit losses, partially offset by income from changes in the fair value of certain investments.
Six Months Ended June 30, 2020 Compared to Six Months Ended June 30, 2019
Revenue. For the six month period ended June 30, 2020, consolidated revenue totaled $2,986 million as compared with $3,457 million for the same period in 2019, a decrease of $471 million, or 14%. Revenue increases in our Clean Energy and Infrastructure segment of $273 million, or 62%, our Electrical Transmission segment of $57 million, or 29%, and our Communications segment of $33 million, or 3%, were offset by a decrease in revenue in our Oil and Gas segment of $830 million, or 53%. Acquisitions contributed $113 million in revenue for the six month period ended June 30, 2020, and organic revenue decreased by approximately $584 million, or 17%, as compared with the same period in 2019.
Communications Segment. Communications revenue was $1,298 million for the six month period ended June 30, 2020, as compared with $1,265 million for the same period in 2019, an increase of $33 million, or 3%. Acquisitions contributed $71 million of revenue for the six month period ended June 30, 2020, and organic revenue decreased by approximately $38 million, or 3%, as compared with the same period in 2019. The decrease in organic revenue was primarily driven by a continued decrease in install-to-the-home revenue as compared with the same period in the prior year, including as a result of the COVID-19 pandemic, offset, in part by higher levels of wireless and wireline/fiber revenue.
Oil and Gas Segment. Oil and Gas revenue was $728 million for the six month period ended June 30, 2020, as compared with $1,558 million for the same period in 2019, a decrease of $830 million, or 53%. The expected decrease was primarily due to lower levels of project activity and mix, including the effects of regulatory disruptions on certain long-haul pipeline construction activity.
Electrical Transmission Segment. Electrical Transmission revenue was $252 million for the six month period ended June 30, 2020 as compared with $195 million for the same period in 2019, an increase of approximately $57 million, or 29%, due primarily to higher levels of project activity.
Clean Energy and Infrastructure Segment. Clean Energy and Infrastructure revenue was $712 million for the six month period ended June 30, 2020 as compared with $440 million for the same period in 2019, an increase of $273 million, or 62%. Organic revenue increased by approximately $230 million, or 52%, as compared with the same period in 2019, and acquisitions contributed $42 million of revenue for the six month period ended June 30, 2020. The increase in organic revenue was driven by higher levels of renewable power project activity.
Costs of revenue, excluding depreciation and amortization. Costs of revenue, excluding depreciation and amortization, decreased by $377 million, or 13%, from $2,945 million for the six month period ended June 30, 2019 to $2,568 million for the same period in 2020. Lower levels of revenue contributed a decrease in costs of revenue, excluding depreciation and amortization, of $402 million, offset, in part, by an increase of approximately $24 million from reduced productivity. Costs of revenue, excluding depreciation and amortization, as a percentage of revenue increased by approximately 80 basis points, from 85.2% of revenue for the six month period ended June 30, 2019 to 86.0% of revenue for the same period in 2020. The basis point increase was primarily due to the mix of project activity, the impact of the COVID-19 pandemic and lower levels of revenue.
Depreciation. Depreciation was $111 million, or 3.7% of revenue, for the six month period ended June 30, 2020 as compared with $110 million, or 3.2% of revenue, in 2019, an increase of $1 million, or 1%. Acquisitions contributed $4 million of depreciation for the six month period ended June 30, 2020, whereas organic depreciation decreased by $3 million. As a percentage of revenue, depreciation increased by 50 basis points, due primarily to lower levels of revenue.

Amortization of intangible assets. Amortization of intangible assets was $17 million, or 0.6% of revenue, for the six month period ended June 30, 2020, as compared with $9 million, or 0.3% of revenue, for the same period in 2019, an increase of approximately $8 million, or 81%. Acquisitions contributed $6 million of intangible asset amortization for the six month period ended June 30, 2020. As a percentage of revenue, amortization of intangible assets increased by 30 basis points due primarily to lower levels of revenue, as well as the effects of acquisitions and a change in amortization policy for certain intangible assets.
General and administrative expenses. General and administrative expenses were $170 million, or 5.7% of revenue, for the six month period ended June 30, 2020, as compared with $143 million, or 4.1% of revenue, for the same period in 2019, an increase of $27 million, or 19%. Acquisitions contributed $9 million of general and administrative expenses for the six month period ended June 30, 2020. Excluding the effects of acquisitions, administrative expenses increased by approximately $18 million as compared with the same period in the prior year. For the six month period ended June 30, 2020, general and administrative expenses increased, primarily due to the effect of timing of legal, arbitral and settlement matters and provisions for potential credit losses, offset, in part, by reductions in professional fees and travel expense, as compared with the same period in the prior year. Overall, general and administrative expenses as a percentage of revenue increased by approximately 160 basis points for the six month period ended June 30, 2020 as compared with the same period in 2019, due, in part, to lower levels of revenue.
Interest expense, net. Interest expense, net of interest income, was $32 million, or 1.1% of revenue, for the six month period ended June 30, 2020 as compared with $39 million, or 1.1% of revenue, in the same period in 2019. The decrease related primarily to a reduction in interest expense from credit facility activity as well as a decrease in discount charges on financing arrangements for trade receivables, offset, in part, by the effect of a second quarter 2019 arbitration award, under which we recovered $5 million of interest costs. Interest expense from credit facility activity decreased by approximately $12 million as compared with the same period in the prior year due to improved project efficienciesa combination of lower average balances and mix, offset, in part, by reduced cost and overhead utilization due to lower revenue.interest rates.
Other Segment. EBITDA from Other businesses was $10 million for the three month period ended September 30, 2017, as compared with EBITDA of negative $3 million for the same period in 2016, an improvement of $13 million. Other segment EBITDA for the three month period ended September 30, 2017 included $7 million of equity in earnings from unconsolidated affiliates related to our investments in the Waha JVs, which commenced operations in the first half of 2017, and, for the three month periods ended September 30, 2017 and 2016, included losses of $0.4 million and $5 million, respectively, on a proportionately consolidated non-controlled Canadian joint venture. The remaining improvement in Other segment EBITDA was driven by an increase in EBITDA from our oil and gas operations in Mexico.
Corporate. Corporate EBITDA was negative $22 million for the three month period ended September 30, 2017, as compared with EBITDA of negative $24 million for the same period in 2016, for an increase in EBITDA of $2 million. Corporate EBITDA for the three month period ended September 30, 2017 included approximately $3 million of income from changes to estimated earn-out accruals. For the three month period ended September 30, 2017, other corporate expenses increased as compared with the prior year period primarily as a result of costs related to the timing of legal matters and other settlements.

Nine Months Ended September 30, 2017 Compared to Nine Months Ended September 30, 2016
Revenue. For the nine month period ended September 30, 2017, consolidated revenue increased to $5,004 million from $3,793 million, an increase of $1,211 million, or 32%, as compared with the same period in 2016. Oil and Gas revenue increased by $1,303 million, or 90%, Communications revenue increased by $34 million, or 2%, whereas Power Generation and Industrial revenue decreased by $121 million, or 37%, Electrical Transmission revenue decreased by $6 million, or 2%, and Other segment revenue decreased by $1 million, or 4%. Organic revenue increased by approximately $1,115 million, or 29%, and acquisitions contributed $96 million in revenue.
Communications Segment. Communications revenue was $1,762 million for the nine month period ended September 30, 2017, as compared with $1,728 million for the same period in 2016, an increase of $34 million, or 2%. Acquisitions contributed $71 million of revenue, which was offset by a decrease in organic revenue of $37 million. The decrease in organic revenue was primarily driven by lower levels of install-to-the-home and customer fulfillment revenue in 2017, as previously disclosed.
Oil and Gas Segment. Oil and Gas revenue was $2,757 million for nine month period ended September 30, 2017, as compared with $1,454 million for the same period in 2016, an increase of $1,303 million, or 90%. The increase in Oil and Gas revenue was driven primarily by an increase in multiple large long-haul pipeline construction projects.
Electrical Transmission Segment. Electrical Transmission revenue was $277 million for the nine month period ended September 30, 2017, as compared with $284 million for the same period in 2016, a decrease of $6 million, or 2%, due primarily to project activity and timing.
Power Generation and Industrial Segment. Power Generation and Industrial revenue was $204 million for the nine month period ended September 30, 2017, as compared with $325 million for the same period in 2016, a decrease of $121 million, or 37%. Acquisitions contributed $25 million of revenue, which was offset by a decrease in organic revenue of $145 million. The decrease in organic revenue was driven primarily by lower levels of renewable power project activity and timing.
Other Segment. Other segment revenue totaled $14 million for the nine month period ended September 30, 2017, as compared with $15 million for the same period in 2016, a decrease of approximately $1 million, or 4%, driven by a reduction in revenue from a proportionately consolidated non-controlled Canadian joint venture, offset, in part, by increased levels of activity from our oil and gas operations in Mexico.
Costs of revenue, excluding depreciation and amortization. Costs of revenue, excluding depreciation and amortization increased by approximately $1,002 million, or 30%, to $4,324 million for the nine month period ended September 30, 2017, as compared with $3,322 million for the same period in 2016. Higher revenue contributed $1,061 million of an increase in costs of revenue, excluding depreciation and amortization, whereas improved productivity resulted in a decrease of approximately $59 million. Costs of revenue, excluding depreciation and amortization, as a percentage of revenue decreased by approximately 120 basis points, from 87.6% of revenue for the nine month period ended September 30, 2016 to 86.4% of revenue for the same period in 2017. This basis point improvement was driven primarily by our Electrical Transmission and Power Generation and Industrial segments, which benefited from improved project efficiencies, close-outs and mix, as well as the non-recurrence of certain first quarter 2016 project losses. These improvements were offset, in part, by reduced project efficiencies and mix in our Oil and Gas and Communications segments. Additionally, project losses on a proportionately consolidated non-controlled Canadian joint venture in our Other segment totaled $7 million for the nine month period ended September 30, 2017 as compared with $5 million for the same period in the prior year.
Depreciation and amortization. Depreciation and amortization was $138 million, or 2.8% of revenue, for the nine month period ended September 30, 2017 as compared with $122 million, or 3.2% of revenue, in 2016, an increase of $16 million, or 13%. Acquisitions contributed $6 million of incremental depreciation and amortization for the nine month period ended September 30, 2017 as compared with the same period in 2016. As a percentage of revenue, depreciation and amortization decreased by approximately 50 basis points, due primarily to higher levels of revenue.
General and administrative expenses. General and administrative expenses were $202 million, or 4.0% of revenue, for the nine month period ended September 30, 2017, as compared with $195 million, or 5.1% of revenue, for the same period in 2016, an increase of $7 million, or 4%. Acquisitions contributed $10 million of incremental general and administrative expenses for the nine month period ended September 30, 2017, whereas general and administrative expenses for the same period in the prior year included certain restructuring charges of approximately $11 million related to our efforts to streamline our western Canadian oil and gas and our electrical transmission operations, which efforts were substantially completed in 2016. Excluding the effects of the above mentioned items, various administrative expenses increased by approximately $8 million for the nine month period ended September 30, 2017, driven primarily by costs related to the timing of legal matters and other settlements as well as costs associated with growth initiatives. Overall, for the nine month period ended September 30, 2017, general and administrative expenses as a percentage of revenue improved 110 basis points as compared with the same period in the prior year, due primarily to improvements in overhead cost utilization from higher levels of revenue.
Interest expense, net. Interest expense, net of interest income, was $45 million, or 0.9% of revenue, for the nine month period ended September 30, 2017 as compared with $38 million, or 1.0% of revenue, in 2016. The increase was primarily due to higher levels of financing costs, including discount charges on financing arrangements, as well as an increase in interest expense on our Credit Facility for the nine month period ended September 30, 2017 as compared with the same period in 2016.
Equity in earnings of unconsolidated affiliates. Equity in earnings or losses of unconsolidated affiliates includes our share of income or losses from equity investees. For the ninesix month periodperiods ended SeptemberJune 30, 2017,2020, equity in earnings from unconsolidated affiliates wastotaled approximately $15 million, as compared with $13 million for the same period in 2019, and related primarily to our investments in the Waha JVs, which commenced operationsas well as investments in 2017. Equity in earnings from unconsolidated affiliatescertain telecommunications entities.
Other (income) expense, net. Other income, net, was $12 million for the ninesix month period ended SeptemberJune 30, 2016 was approximately $42020, as compared with other expense, net, of $8 million and related to expected recoveries from our interestsfor the same period in certain pre-acquisition equity method investments of Pacer, of which2019. For the remaining investment as of Septembersix month period ended June 30, 2017 is in the final stages of liquidation and is being managed by a receiver.

Other income, net. Other2020, other income, net, consists primarilyincluded approximately $2 million of gains or losses from sales of, or changes in estimated recoveries from, assets and investments, certain legal/other settlements, gains or lossesexpense from changes to estimated earn-out accruals, net, $8 million of gains on sales of equipment, net, and $4 million, net, of income from changes in the fair value of certain restructuring charges related to losses on disposal of excess fixed assets.investments. For the ninesix month period ended SeptemberJune 30, 2017,2019, other income,expense, net, was $4 million. Other income, net, for the nine month period ended September 30, 2017 included $12$36 million of expenses relatedexpense from changes to changesestimated earn-out accruals, offset, in expected recovery amounts forpart, by $19 million of income from a second quarter 2019 arbitration award, $6 million of gains on sales of equipment, net, and $1 million of income from the settlement of an investment that iswas in the final stages of liquidation, as well as reduced recovery expectations on a long-term note receivable due to recent bankruptcy proceedings for a former customer, offset by $12 million of income from changes to estimated earn-out accruals. Other income, net, for the nine month period ended September 30, 2016 totaled $13 million, and included approximately $10 million related to a settlement in connection with a previously acquired business, $3 million of restructuring charges related to estimated losses on the planned disposal of fixed assets held-for-sale and $3 million of income from changes to estimated earn-out accruals. Gains on sales of equipment, net, totaled approximately $4 million and $3 million for the nine month periods ended September 30, 2017 and 2016, respectively.liquidation.
Provision for income taxes. Income tax expense was $126$21 million for the ninesix month period ended SeptemberJune 30, 20172020, as compared with $54income tax expense of $52 million for the same period in 2019. In the prior year. For the nine month period ended September 30, 2017, we hadfirst half of 2020, pre-tax income of $314decreased to $114 million as compared with $132$215 million for the same period in the prior year. Our effective tax rate decreased to 18.6% for the ninesix month period ended SeptemberJune 30, 2017 decreased versus2020 from 24.1% for the same period in 2016, primarily due2019. Our effective tax rate for the six month period ended June 30, 2020 included a benefit of approximately $10 million related to the release of certain valuation allowances on Canadian deferred tax creditsassets that were recognized duringno longer necessary. For the third quartersix month period ended June 30, 2019, income tax expense included the recognition of 2017, offset byapproximately $2 million of excess tax benefits from the effectvesting of lossesshare-based awards and the benefit of foreign tax rate changes and a reduction in foreign jurisdictions.earnings.
Analysis of EBITDA by Segment
Communications Segment. EBITDA for our Communications segment was $173$127 million, or 9.8% of revenue, for the ninesix month period ended SeptemberJune 30, 2017,2020, as compared with $191$98 million, or 11.0%7.7% of revenue, for the same period in 2016, a decrease2019, an increase of approximately $18$29 million, or 9%30%. This decrease wasAs a percentage of revenue, EBITDA increased by approximately 210 basis points, or $27 million, primarily due to: (i) the non-recurrenceto project mix and efficiencies. Higher levels of a first quarter 2016 gain from a settlementrevenue contributed an increase in connection with a previously acquired business; (ii) production inefficiencies; (iii) certain other expense reduction efforts, as well as timingEBITDA of legal matters and other settlements; (iv) offset, in part, by a benefit from higher revenue.$3 million.
Oil and Gas Segment. EBITDA for our Oil and Gas segment was $356$155 million, or 12.9%21.2% of revenue, for the ninesix month period ended SeptemberJune 30, 2017,2020, as compared with $188$287 million, or 12.9%18.4% of revenue, for the same period in 2016,2019, a decrease of $132 million, or 46%. Lower levels of revenue contributed a decrease in EBITDA of $153 million, whereas improved productivity contributed an increase of $168 million, or approximately 90%, driven$21 million. EBITDA margins increased by approximately 280 basis points due primarily by higher revenue. As a percentage of revenue, segment EBITDA was flat for the nine month periods ended September 30, 2017 as compared with the same period in 2016. The effect of reducedto improved project efficiencies, closeouts and mix for the nine month period ended September 30, 2017 was partially offset by the non-recurrence of a first quarter 2016 project loss of approximately $13 million on a western Canadian oil and gas project and the non-recurrence of approximately $7 million of 2016 restructuring charges related to efforts to streamline our western Canadian oil and gas operations.mix.
Electrical Transmission Segment. EBITDA for our Electrical Transmission segment was $11$5 million, or 4.0%2.0% of revenue, for the ninesix month period ended SeptemberJune 30, 2017,2020, as compared with EBITDA of negative $42$12 million, or negative 14.8%6.4% of revenue, for the same period in 2016,2019, a decrease in EBITDA of approximately $7 million, or 59%. As a percentage of revenue, EBITDA decreased by approximately 430 basis points, or $11 million, due primarily to reduced project efficiencies, closeouts and mix. Higher levels of revenue contributed an increase in EBITDA of $53approximately $4 million. The improvement in Electrical Transmission EBITDA was due to a combination of project efficiencies
Clean Energy and mix, improved cost and overhead utilization due to higher levels of revenue, the non-recurrence of a first quarter 2016 project loss of approximately $15 million on a large transmission project, and the non-recurrence of approximately $7 million of 2016 restructuring charges related to efforts to streamline our operations.
Power Generation and IndustrialInfrastructure Segment. EBITDA for our Power GenerationClean Energy and IndustrialInfrastructure segment was $15$35 million, or 7.3%4.9% of revenue, for the ninesix month period ended SeptemberJune 30, 2017,2020, as compared with EBITDA of $14$12 million, or 4.3%2.8% of revenue, for the same period in 2016,2019, an increase in EBITDA of $1$23 million, or 7%190%. As a percentage of revenue, segment EBITDA improvedincreased by approximately 300220 basis points, for the nine month period ended September 30, 2017 as compared with the same period in the prior year due to improved project efficiencies and mix, offset, in part, by reduced cost and overhead utilization due to lower revenue.
Other Segment. EBITDA from Other businesses was approximately $12 million for the nine month period ended September 30, 2017, as compared with EBITDA of negative $3 million for the same period in 2016, an increase in EBITDA of $14 million. Other segment EBITDA for the nine month period ended September 30, 2017 includedor $15 million, of equity in earnings from unconsolidated affiliates related to our investments in the Waha JVs, which commenced operations in the first half of 2017. For the nine month periods ended September 30, 2017 and 2016, Other segment EBITDA included losses of $7 million and $5 million, respectively, on a proportionately consolidated non-controlled Canadian joint venture. The remaining improvement in Other segment EBITDA was driven by an increase in EBITDA from our oil and gas operations in Mexico.
Corporate. Corporate EBITDA was negative $69 million for the nine month period ended September 30, 2017, as compared with EBITDA of negative $55 million for the same period in 2016, for a decrease in EBITDA of $14 million. Corporate EBITDA for the nine month period ended September 30, 2017 included approximately $12 million of expenses related to changes in expected recovery amounts for an investment that is in the final stages of liquidation, as well as reduced recovery expectations on a long-term note receivable due to recent bankruptcy proceedings for a former customer, offset by approximately $12 million of income from changes to estimated earn-out accruals. For the nine month period ended September 30, 2017, other corporate expenses increased as compared with the same period in the prior year, due primarily to costsa combination of improved project efficiencies, close-outs and mix. Higher levels of revenue contributed an increase in EBITDA of $8 million.
Other Segment. EBITDA from Other businesses was $15 million and $13 million for the six month periods ended June 30, 2020 and 2019, respectively. Other segment EBITDA related primarily to equity in earnings from our investment in the Waha JVs.
Corporate. Corporate EBITDA was negative $63 million for the six month period ended June 30, 2020, as compared with EBITDA of negative $49 million for the same period in 2019, for a decrease in EBITDA of approximately $14 million. Corporate EBITDA for the six month period ended June 30, 2020 included approximately $2 million of expense related to changes in estimated earn-out accruals, net. Corporate EBITDA for the timingsix month period ended June 30, 2019 included $36 million of expense related to changes in estimated earn-out accruals, partially offset by approximately $25

million of recovery of legal matterscosts and other settlements,income from a second quarter 2019 arbitration award and $1 million of income from the settlement of an investment that was in the final stages of liquidation. Excluding the effects of these items, other corporate expenses for the six month period ended June 30, 2020 increased by approximately $22 million as well as costs associatedcompared with growth initiatives, including incentivethe same period in the prior year, primarily due to the effects of legal and compensation expense.settlement matter timing and provisions for potential credit losses, partially offset by income from changes in the fair value of certain investments.
Foreign Operations
Our foreign operations are primarily in Canada.Canada and, to a lesser extent, in Mexico and the Caribbean. See Note 13 - Segments and Related Information in the notes to the condensed unaudited consolidated financial statements, which is incorporated by reference.


Non-U.S. GAAP Financial Measures
As appropriate, we supplement our reported U.S. GAAP financial information with certain non-U.S. GAAP financial measures, including earnings before interest, income taxes, depreciation and amortization (“EBITDA”). In addition, we have presented “Adjusted, adjusted EBITDA” as well as (“Adjusted EBITDA”), adjusted net income (“Adjusted Net Income”) and adjusted diluted earnings per share (“Adjusted Diluted Earnings Per Share”). TheThese “adjusted” non-U.S. GAAP measures exclude, as applicable to the particular periods, non-cash stock-based compensation expense, certain restructuring charges, project results, which for the periods presented, were losses, from a proportionately consolidated non-controlled Canadian joint venture that was underway when we acquired Pacer in 2014, and whose sole activity involves the constructionexpense; amortization of a bridge, a business in which we do not otherwise engage, is managed by a third party, and for which we have minimal direct construction involvement and automatically terminates upon completion of the project, and charges or recoveries from multi-employer pension plan withdrawals,intangible assets; and, for Adjusted Net Income and Adjusted Diluted Earnings Per Share, the tax effects of the adjusted items, including non-cash stock based compensation. Thestock-based compensation expense, and the effects of changes in statutory tax rates. These definitions of EBITDA and Adjusted EBITDA above are not the same as in our Credit Facility or in the indenture governing our senior notes; therefore, EBITDA and Adjusted EBITDA as presented in this discussion should not be used for purposes of determining our compliance with the covenants contained in our debt instruments.
We use EBITDA and Adjusted EBITDA, as well as Adjusted Net Income and Adjusted Diluted Earnings Per Share to evaluate our performance, both internally and as compared with our peers, because these measures exclude certain items that may not be indicative of our core operating results, as well as items that can vary widely across different industries or among companies within the same industry, and, for non-cashindustry. Non-cash stock-based compensation expense can also be subject to volatility from changes in the market price per share of our common stock or variations in the value and number of shares granted. Additionally,granted, and amortization of intangible assets is subject to acquisition activity, which varies from period to period. We believe these adjusted measures provide a baseline for analyzing trends in our underlying business.
We believe these non-U.S. GAAP financial measures provide meaningful information and help investors understand our financial results and assess our prospects for future performance. Because non-U.S. GAAP financial measures are not standardized, it may not be possible to compare these financial measures with other companies’ non-U.S. GAAP financial measures having the same or similar names. These financial measures should not be considered in isolation from, as substitutes for, or alternative measures of, reported net income or diluted earnings per share, and should be viewed in conjunction with the most comparable U.S. GAAP financial measures and the provided reconciliations thereto. We believe these non-U.S. GAAP financial measures, when viewed together with our U.S. GAAP results and related reconciliations, provide a more complete understanding of our business. We strongly encourage investors to review our consolidated financial statements and publicly filed reports in their entirety and not rely on any single financial measure.
The following table presents a reconciliation of net income to EBITDA and Adjusted EBITDA in dollar and percentage of revenue terms, for the periods indicatedindicated. The tables below (dollar amounts in millions). The tables below may contain slight summation differences due to rounding.
For the Three Months Ended September 30 For the Nine Months Ended September 30For the Three Months Ended June 30, For the Six Months Ended June 30,
2017 2016 2017 20162020 2019 2020 2019
Net income$64.2
 3.3% $56.5
 3.6% $188.2
 3.8% $78.1
 2.1%$56.8
 3.6% $120.2
 6.2% $92.9
 3.1% $163.3
 4.7%
Interest expense, net17.6
 0.9% 13.1
 0.8% 45.0
 0.9% 37.9
 1.0%14.8
 0.9% 16.6
 0.9% 31.8
 1.1% 38.9
 1.1%
Provision for income taxes43.4
 2.2% 38.8
 2.4% 126.2
 2.5% 54.3
 1.4%20.7
 1.3% 39.7
 2.0% 21.2
 0.7% 51.8
 1.5%
Depreciation and amortization50.1
 2.6% 42.6
 2.7% 138.4
 2.8% 122.2
 3.2%
Depreciation57.7
 3.7% 55.3
 2.9% 110.8
 3.7% 109.5
 3.2%
Amortization of intangible assets9.8
 0.6% 4.7
 0.2% 17.2
 0.6% 9.5
 0.3%
EBITDA$175.3
 9.0% $151.0
 9.5% $497.7
 9.9% $292.6
 7.7%$159.9
 10.2% $236.5
 12.2% $273.8
 9.2% $373.0
 10.8%
Non-cash stock-based compensation expense3.4
 0.2% 3.9
 0.2% 10.5
 0.2% 11.3
 0.3%5.8
 0.4% 4.2
 0.2% 9.9
 0.3% 7.9
 0.2%
Restructuring charges
 % 4.7
 0.3% 0.6
 0.0% 13.8
 0.4%
Project results from non-controlled joint venture0.4
 0.0% 5.1
 0.3% 7.4
 0.1% 5.1
 0.1%
Charges (recoveries) from multi-employer pension plan withdrawals0.6
 0.0% 
 % 0.6
 0.0% 
 %
Adjusted EBITDA$179.6
 9.2%
$164.8

10.4% $516.7
 10.3% $322.8
 8.5%$165.7
 10.6%
$240.7

12.4% $283.7
 9.5% $380.9
 11.0%



A reconciliation of EBITDA to Adjusted EBITDA and Adjusted EBITDA margin by reportable segment, for the periods indicated is as follows:


For the Three Months Ended September 30 For the Nine Months Ended September 30For the Three Months Ended June 30, For the Six Months Ended June 30,
2017 2016 2017 20162020 2019 2020 2019
EBITDA$175.3
 9.0% $151.0
 9.5 % $497.7
 9.9% $292.6
 7.7 %$159.9
 10.2 % $236.5
 12.2% $273.8
 9.2% $373.0
 10.8%
Non-cash stock-based compensation expense3.4
 0.2% 3.9
 0.2 % 10.5
 0.2% 11.3
 0.3 %5.8
 0.4 % 4.2
 0.2% 9.9
 0.3% 7.9
 0.2%
Restructuring charges
 % 4.7
 0.3 % 0.6
 0.0% 13.8
 0.4 %
Project results from non-controlled joint venture0.4
 0.0% 5.1
 0.3 % 7.4
 0.1% 5.1
 0.1 %
Charges (recoveries) from multi-employer pension plan withdrawals0.6
 0.0% 
  % 0.6
 0.0% 
  %
Adjusted EBITDA$179.6
 9.2% $164.8
 10.4 % $516.7
 10.3% $322.8
 8.5 %$165.7
 10.6 % $240.7
 12.4% $283.7
 9.5% $380.9
 11.0%
Reportable Segment:                      
Communications$65.5
 10.7% $63.0
 10.1 % $173.6
 9.9% $191.4
 11.1 %$76.4
 11.7 % $52.4
 8.0% $127.2
 9.8% $97.8
 7.7%
Oil and Gas108.1
 9.3% 118.0
 16.0 % 356.1
 12.9% 194.1
 13.3 %80.1
 21.7 % 179.3
 19.1% 154.5
 21.2% 286.7
 18.4%
Electrical Transmission4.5
 5.5% (3.8) (3.7)% 11.8
 4.3% (34.7) (12.2)%(3.2) (2.6)% 8.7
 8.6% 5.1
 2.0% 12.4
 6.4%
Power Generation and Industrial9.3
 9.6% 6.1
 4.9 % 14.8
 7.3% 13.9
 4.3 %
Clean Energy and Infrastructure30.1
 7.1 % 8.9
 3.5% 35.0
 4.9% 12.1
 2.8%
Other10.5
 98.9% 2.1
 27.2 % 19.0
 133.3% 2.6
 17.2 %7.5
 NM
 6.4
 NM
 14.9
 NM
 12.7
 NM
Corporate(18.3) NA (20.6) NA (58.6) NA (44.4) NA(25.2) 
 (15.0) 
 (53.0) 
 (40.8) 
Adjusted EBITDA$179.6
 9.2% $164.8
 10.4 % $516.7
 10.3% $322.8
 8.5 %$165.7
 10.6 % $240.7
 12.4% $283.7
 9.5% $380.9
 11.0%

Adjusted Net Income and Adjusted Diluted Earnings Per ShareNM - Percentage is not meaningful
The tables below, which may contain slight summation differences due to rounding, reconcile reported net income and reported diluted earnings per share, the most directly comparable U.S. GAAP financial measures, to Adjusted Net Income and Adjusted Diluted Earnings Per Share.


Beginning in 2020, our computation of Adjusted Net Income includes the effect of intangible asset amortization, as discussed above. Accordingly, all prior year periods have been updated to conform with the current year presentation.
For the Three Months Ended September 30For the Three Months Ended June 30,
2017 20162020 2019
Net Income
(in millions)
 Diluted Earnings Per Share Net Income
(in millions)
 Diluted Earnings Per ShareNet Income (in millions) Diluted Earnings Per Share Net Income (in millions) Diluted Earnings Per Share
Reported U.S. GAAP measure$64.2
 $0.77
 $56.5
 $0.69
$56.8
 $0.78
 $120.2
 $1.58
Adjustments:              
Non-cash stock-based compensation expense3.4
 0.04
 3.9
 0.05
5.8
 0.08
 4.2
 0.06
Restructuring charges
 
 4.7
 0.06
Project results from non-controlled joint venture0.4
 0.00
 5.1
 0.06
Charges (recoveries) from multi-employer pension plan withdrawals0.6
 0.01
 
 
Amortization of intangible assets9.8
 0.13
 4.7
 0.06
Total adjustments, pre-tax$4.4
 $0.05
 $13.7
 $0.17
$15.6
 $0.21
 $8.9
 $0.12
Income tax effect of adjustments (a)
(0.6) (0.01) (4.0) (0.05)(3.5) (0.05) (2.1) (0.03)
Statutory tax rate effects (b)

 
 (1.4) (0.02)
Adjusted non-U.S. GAAP measure$68.0
 $0.82
 $66.3
 $0.81
$69.0
 $0.95
 $125.6
 $1.65

For the Nine Months Ended September 30For the Six Months Ended June 30,
2017 20162020 2019
Net Income
(in millions)
 Diluted Earnings Per Share Net Income
(in millions)
 Diluted Earnings Per ShareNet Income (in millions) Diluted Earnings Per Share Net Income (in millions) Diluted Earnings Per Share
Reported U.S. GAAP measure$188.2
 $2.27
 $78.1
 $0.96
$92.9
 $1.26
 $163.3
 $2.15
Adjustments:              
Non-cash stock-based compensation expense10.5
 0.13
 11.3
 0.14
9.9
 0.13
 7.9
 0.10
Restructuring charges0.6
 0.01
 13.8
 0.17
Project results from non-controlled joint venture7.4
 0.09
 5.1
 0.06
Charges (recoveries) from multi-employer pension plan withdrawals0.6
 0.01
 
 
Amortization of intangible assets17.2
 0.23
 9.5
 0.13
Total adjustments, pre-tax$19.1
 $0.23
 $30.3
 $0.37
$27.1
 $0.37
 $17.4
 $0.23
Income tax effect of adjustments (a)
(4.1) (0.05) (10.6) (0.13)(6.1) (0.08) (6.5) (0.09)
Statutory tax rate effects (b)

 
 (1.4) (0.02)
Adjusted non-U.S. GAAP measure$203.1
 $2.45
 $97.7
 $1.20
$113.8
 $1.54
 $172.8
 $2.28
(a)
Represents the tax effect of the adjusted items that are subject to tax, including the tax effects of non-cash stock-based compensation expense, which for the six month period ended June 30, 2019 included excess tax benefits of $2.3 million from the vesting of share-based compensation expense.payment awards. Tax effects are determined based on the tax treatment of the related items,item, the incremental statutory tax rate of the jurisdictions pertaining to eachthe adjustment, and taking into consideration their effect on pre-tax income. For both the three and ninesix month periods ended SeptemberJune 30, 2017,2020, our consolidated effective tax rate,rates, as reported, was 40%were 26.7% and 18.6%, respectively, and as adjusted, was 39%.were 26.0% and 19.3%, respectively. For the three and ninesix month periods ended SeptemberJune 30, 2016,2019, our consolidated effective tax rate,rates, as reported, was 41% for both,were 24.8% and 24.1%, respectively, and as adjusted, was 39%were 25.6% and 40%25.7%, respectively.


(b)For the three and six month periods ended June 30, 2019, includes the effects of changes in Canadian provincial statutory tax rates.
Financial Condition, Liquidity and Capital Resources
Our primary sources of liquidity are cash flows from operations, availability under our Credit Facility and our cash balances. Our primary liquidity needs are for working capital, capital expenditures, insurance and performance collateral in the form of cash and letters of credit, earn-out obligations, cost and equity investeeinvestment funding requirements, debt service and income taxes and share repurchase programs.taxes. We also evaluate opportunities for strategic acquisitions and investments from time to time, and we may consider opportunities to borrow additional funds, which may include borrowings under our Credit Facility or debt issuances, or to repurchase, refinance or retire outstanding debt, or repurchase additional shares of our outstanding common stock in the future under share repurchase authorizations, any of which may require our use of cash. See Note 7 - Debt in the notes to the consolidated financial statements in this Form 10-Q, which is incorporated by reference, for details of our $600 million Private Offering of 4.50% Senior Notes in July 2020.
Capital Expenditures. For the ninesix month period ended SeptemberJune 30, 2017,2020, we spent $83$133 million on capital expenditures, or $70$115 million, net of asset disposals, and incurred approximately $131$45 million of equipment purchases under capital lease and other financing arrangements.finance leases. We estimate that we will spend approximately $105$205 million on capital expenditures, or approximately $90$175 million, net of asset disposals, in 2017,2020, and expect to incur approximately $155$115 million to $135 million of equipment purchases under capital lease or other financing arrangements.finance leases. Actual capital expenditures may increase or decrease in the future depending upon business activity levels, as well as ongoing assessments of equipment lease versus buy decisions based on short and long-term equipment requirements.
Acquisitions and Acquisition-Related Contingent ConsiderationEarn-Out Liabilities. We typically utilize cash for ourbusiness acquisitions and other strategic acquisitions of other businesses,arrangements, and for the ninesix month period ended SeptemberJune 30, 2017,2020, we used $116$10 million of cash for this purpose. In addition, in most of our acquisitions, we have agreed to make future earn-out payments to the sellers whichthat are contingent upon the future earnings performance of the acquired businesses. Certain earn-outbusinesses, which we also refer to as “earn-out” payments. Earn-out payments may be paid in either cash or, under specific circumstances, MasTec common stock, or a combination thereof, at our option. Potential future earn-out obligations are measured at their estimated fair value as of the date of acquisition, with subsequent changes in fair value recorded in earnings as a component of other income or expense. The estimated total value of earn-out obligations recorded asfuture acquisition-related contingent consideration and other liabilities as of SeptemberJune 30,


2017 2020 was approximately $105$133 million. Of this amount, $15$20 million represents the liability for earn-out obligations that have been earned.earned amounts. The remainder approximately $90 million, is management’s estimate of potential earn-out obligationsacquisition-related contingent consideration and other liabilities that are contingent upon future performance. There were no payments related to earn-out obligations forFor the threesix month periodperiods ended SeptemberJune 30, 2017,2020 and for the nine month period ended September 30, 2017,2019, we made payments of $19 million. For the three and nine month periods ended September 30, 2016, we made payments of $5$50 million and $20$30 million, respectively, related to earn-out obligations.
Income Taxes. Tax For the six month period ended June 30, 2020, tax payments, net of tax refunds were $1 million, which included the benefit of tax payment deferrals of approximately $78$8 million resulting from federal and $15 million, respectively, forstate COVID-19 relief provisions. For the ninesix month periodsperiod ended SeptemberJune 30, 2017 and 2016. Tax2019, tax payments, which are made quarterly,net of tax refunds, totaled approximately $39 million. Our tax payments vary with changes in taxable income and earnings based on estimates of full year taxable income activity and estimated tax rates.
Working Capital. We need working capital to support seasonal variations in our business, primarily due to the effect of weather conditions on external construction and maintenance work and the spending patterns of our customers, both of which influence the timing of associated spending to support related customer demand. Working capital needs are generally higher during the summer and fall months due to increased demand for our services when favorable weather conditions exist in many of the regions in which we operate. Conversely, working capital needs are typically converted to cash during the winter months. These seasonal trends, however, can be offset by changes in the timing of projects, which can be affected by project delays or accelerations and/or other factors that may affect customer spending.
Working capital requirements also tend to increase when we commence multiple projects or particularly large projects because labor, including subcontractor costs, and certain other costs, including inventory, become payable before the receivables resulting from work performed are collected. The timing of billing milestonesbillings and project close-outs can contribute to changes in unbilled revenue. As of SeptemberJune 30, 2017,2020, we expect that substantially all of our CIEBunbilled receivables will be billed to customers in the normal course of business within the next 12twelve months. AccountsTotal accounts receivable, balances, which consistconsists of contract billings, as well as CIEBunbilled receivables and retainage, increased to $1.5net of allowance, were generally flat at $1.9 billion as of Septemberfor both June 30, 2017 from $1.2 billion as of2020 and December 31, 2016 due to higher levels of quarterly revenue, as well as the ramp-up of various projects, primarily in our oil and gas business.2019.
Our payment billing terms are generally net 30 days, and some of our contracts allow our customers to retain a portion of the contract amount (generally, from 5% to 10% of billings) until the job is completed. As part of our ongoing working capital management practices, we evaluate opportunities to improve our working capital cycle time through contractual provisions and certain financing arrangements. For certain customers, we maintain inventory to meet the materials requirements of the contracts. Occasionally, certain of our customers pay us in advance for a portion of the materials we purchase for their projects or allow us to pre-bill them for materials purchases up to specified amounts. Vendor terms are generally 30 days. Our agreements with subcontractors often contain a “pay-if-paid” provision, whereby our payments to subcontractors are made only after we are paid by our customers.
Summary of Financial Condition, Liquidity and Capital Resources
WeIncluding our current assessment of the potential effects of the COVID-19 pandemic on our results of operations, we anticipate that funds generated from operations, borrowings under our Credit Facility and our cash balances will be sufficient to meet our working capital requirements, anticipated capital expenditures, debt service obligations, insurance and performance collateral requirements, letter of credit needs, earn-out obligations, required income tax payments, acquisition and other investment funding requirements, share repurchase activity and other liquidity needs for at least the next 12twelve months.
Sources and Uses of Cash
As of SeptemberJune 30, 2017,2020, we had $746approximately $614 million in working capital, defined as current assets less current liabilities, as compared with $562$954 million as of December 31, 2016, an increase2019, a decrease of approximately $183$341 million. Total cashCash and cash equivalents of $44totaled approximately $49 million and $71 million as of SeptemberJune 30, 2017 increased by $5 million from total cash2020 and cash equivalents of $39 million as of December 31, 2016.2019, respectively.
Sources and uses of cash are summarized below (in millions):

 For the Nine Months Ended September 30
 2017 2016
Net cash provided by operating activities$178.6
 $127.1
Net cash used in investing activities$(249.4) $(94.1)
Net cash provided by (used in) financing activities$75.6
 $(27.6)



For the Six Months Ended June 30,
 2020 2019
Net cash provided by operating activities$496.5
 $351.5
Net cash used in investing activities$(136.7) $(122.8)
Net cash used in financing activities$(383.8) $(196.8)
Operating Activities. Cash flow from operations is primarily influenced by changes in the timing of demand for our services and operating margins, but can also be affected by working capital needs associated with the various types of services we provide. Working capital is affected by changes in total accounts receivable, CIEB,prepaid expenses and other current assets, accounts payable and payroll tax payments, including the effect of deferrals from COVID-19 relief provisions, accrued expenses and BIEC,contract liabilities, all of which tend to be related. These working capital items are affected by changes in revenue resulting from both the timing and the volume of work performed, by variability in the timing of customer billings and collections of receivables, as well as settlement of payables and other obligations. Net cash provided by operating activities for the ninesix month period ended SeptemberJune 30, 20172020 was $179$497 million, as compared with approximately $127$351 million of net cash provided by operating activities for the same period in 2016.2019, for an increase in cash provided by operating activities of approximately $145 million. The increase in cash flow from operating activities was driven by an increase in net income of $110 millionprimarily due to growth in revenue and an increase in the effect of non-cash adjustments of $107 million, partially offset by a decrease in the effect of networking capital-related changes in assets and liabilities, of $165 million.net, offset, in part, by a reduction in net income.


Our days sales outstanding, (“DSO”), net of BIEC,contract liabilities (“DSO”) was 6790 as of Septemberboth June 30, 2017, as compared with 68 as of 2020 and December 31, 2016 and 61 as of September 30, 2016.2019. DSO net of BIEC, is calculated as total accounts receivable, net of allowance, less BIEC,contract liabilities, divided by average daily revenue for the most recently completed quarter as of the balance sheet date. DSOs can fluctuate from period to period due to the timing of billings, collections and settlements, timing of project close-outs and retainage collections, changes in project and customer mix and the effect of working capital initiatives. Other than matters subject to litigation, we do not anticipate material collection issues related to our outstanding accounts receivable balances, nor do we believe that we have material amounts due from customers experiencing financial difficulties. WeBased on current expectations, we expect to collect substantially all of our outstanding accounts receivable net,balances within the next twelve months.
Investing Activities. Net cash used in investing activities increased by $155$14 million to $249$137 million for the ninesix month period ended SeptemberJune 30, 20172020 from $94$123 million for the ninesix month period ended SeptemberJune 30, 2016.2019. For the ninesix month period ended SeptemberJune 30, 2017, payments for acquisitions,2020, we spent $133 million on capital expenditures, or $115 million, net of cash acquired, totaled $116 million due to our 2017 acquisitions, an increase of $112 millionasset disposals, as compared with the same period in 2016. Payments for other investments,$57 million, or $38 million, net which relates primarily to activity associated with cost and equity investees, was $64 million for the nine month period ended September 30, 2017, as compared with $8 millionof asset disposals, for the same period in 2016, representingthe prior year, for an increase in cash used in investing activities of $77 million. Cash paid for acquisitions, net, decreased by approximately $56 million. Payments for other investments$84 million for the ninesix month period ended SeptemberJune 30, 2017 related to our equity investment in the Waha JVs, for which we have $19 million in letters of credit issued as collateral as of September 30, 2017, as described in Note 4 - Fair Value of Financial Instruments in the notes to the condensed unaudited consolidated financial statements, which is incorporated by reference. Proceeds from other investments for the nine month period ended September 30, 2017 related to recoveries from an equity method investment that is in the final stages of liquidation and is being managed by a receiver. Additionally, for the nine month period ended September 30, 2017, we spent $83 million on capital expenditures, or $70 million, net of asset disposals,2020 as compared with capital expenditures, net of asset disposals, of $82 million for the same period in the prior year,year. Payments for other investments totaled $17 million for the six month period ended June 30, 2020 and related primarily to equity investments in certain telecommunications entities, whereas for the six month period ended June 30, 2019, payments for other investments totaled $5 million, for an increase of $12 million in cash used in investing activities. Proceeds from other investments and other investing activities, net, for the six month period ended June 30, 2020 totaled $5 million, whereas for the six month period ended 2019, totaled $15 million and related primarily to the sale of an investment in a telecommunications entity, for a decrease in cash used inprovided by investing activities of $12approximately $9 million.
Financing Activities. Net cash provided by financing activities for the nine month period ended September 30, 2017 was $76 million, as compared with $28 million of net cash used in financing activities for the ninesix month period ended SeptemberJune 30, 2016,2020 was $384 million, as compared with net cash used in financing activities of $197 million for the six month period ended June 30, 2019, for an increase in cash provided byused in financing activities of $103$187 million. Credit facility related activity, net,Payments for repurchases of common stock totaled $120 million for the ninesix month period ended SeptemberJune 30, 2017, totaled $162 million of borrowings, net of repayments, as compared to $37 million2020, whereas for the ninesix month period ended SeptemberJune 30, 2016,2019, totaled $6 million, for an increase in cash provided by credit facility-relatedused in financing activities of approximately $115 million. Credit facility and other borrowing-related activity, net, for the six month period ended June 30, 2020, totaled $166 million of repayments, net of $125borrowings, as compared with $126 million whichfor the six month period ended June 30, 2019, for an increase was partially offset byin cash used in financing activities of approximately $40 million. Additionally, payments of $6finance lease obligations increased by $23 million for Credit Facility-related financing costs.the six month period ended June 30, 2020. Payments of acquisition-related contingent consideration included within financing activities totaled $39 million and $29 million for the ninesix month periods ended SeptemberJune 30, 20172020 and 2016 were generally flat, totaling $192019, respectively, for an increase of $10 million in 2017 as compared with $20cash used in financing activities. Total payments of acquisition-related contingent consideration, including payments in excess of acquisition-date liabilities, which are classified within operating activities, totaled $50 million in 2016.and $30 million for the six month periods ended June 30, 2020 and 2019, respectively.
Senior Secured Credit Facility
We have a senior secured credit facility that we refer to as our(the “Credit Facility,” which was amended and restated in February 2017. As ofFacility”) maturing on September 30, 2017,19, 2024. Aggregate borrowing commitments under the Credit Facility has aggregate borrowing commitments of approximately $1.5total $1.75 billion, composed of $1.1$1.35 billion of revolving commitments and an outstandinga term loan totaling $400 million in the aggregateoriginal principal amount of $400 million.amount. Borrowings under the Credit Facility are used for working capital requirements, capital expenditures and other corporate purposes, including investments inshare repurchases, equity or other investees,investments, potential acquisitions or other strategic arrangements and the repurchase or prepayment of indebtedness.
We are dependent upon borrowings and letters of credit under the Credit Facility to fund our operations. Should we be unable to comply with the terms and conditions of theour Credit Facility, we would be required to obtain modifications to the Credit Facility or obtain an alternative source of financing to continue to operate, neither of which may be available to us on commercially reasonable terms, or at all. The Credit Facility is subject to certain provisions and covenants, as more fully described in Note 7 - Debt in the notes to the condensed unauditedaudited consolidated financial statements which is incorporated by reference.included in our 2019 Form 10-K.
4.875% Senior Notes
We have outstanding $400 million of 4.875% senior notes due March 15, 2023 (our “4.875% Senior Notes”), which were issued in 2013 in a registered public offering. outstanding. The 4.875% Senior Notes are guaranteed by certain of our subsidiaries and are subject to certain provisions and covenants, as more fully described in Note 7 - Debt and Note 17 - Supplemental Guarantor Condensed Consolidating Financial Information in the notes to the audited consolidated financial statements included in our 20162019 Form 10-K. Also, see Note 16 - Supplemental Guarantor Condensed Unaudited Consolidating Financial Informationbelow.


In July 2020, we agreed to issue $600 million aggregate principal amount of 4.50% senior unsecured notes due August 15, 2028 (the “4.50% Senior Notes”) at par in a private offering (the “Private Offering”) and issued a conditional notice to redeem our 4.875% Senior Notes on August 19, 2020. The Private Offering is expected to close on August 4, 2020. The proceeds from the Private Offering will be used to redeem or repurchase all of our existing 4.875% Senior Notes, to pay fees and expenses in connection therewith, and to repay revolving loans under the Credit Facility. Prior to redeeming the 4.875% Senior Notes, we may temporarily pay down revolving loans under our Credit Facility and then, subject to customary borrowing conditions, re-borrow under our Credit Facility to effect the redemption. For additional information on the Private Offering, the 4.50% Senior Notes and the redemption of the 4.875% Senior Notes, see Note 7 - Debt in the notes to the condensed unaudited consolidated financial statements in this Form 10-Q, which areis incorporated by reference.
Debt Covenants
We were in compliance with the provisions and covenants contained in our outstanding debt instruments as of SeptemberJune 30, 2017.2020.
Additional Information
For detailed discussion and additional information pertaining to our debt instruments, see Note 7 - Debt in the notes to the audited consolidated financial statements included in our 20162019 Form 10-K. Also see Note 7 - Debt in the notes to the condensed unaudited consolidated financial statements in this Form 10-Q for current period balances and discussion, which is incorporated by reference.
Supplemental Guarantor Financial Information
In March 2020, the SEC amended Rule 3-10 of Regulation S-X regarding the financial disclosure requirements for guarantors and issuers of guaranteed securities, permitting registrants to disclose summarized financial information. We early adopted these amended rules in the second quarter of 2020 as discussed in Note 1 - Business, Basis of Presentation and Significant Accounting Policies in the notes to the consolidated financial statements in this Form 10-Q, which is incorporated by reference.
Our 4.875% Senior Notes are fully and unconditionally guaranteed on an unsecured, unsubordinated, joint and several basis by MasTec, Inc. and certain of our existing and future 100%-owned direct and indirect domestic subsidiaries that are, as of June 30, 2020, each guarantors of the Credit Facility or other outstanding indebtedness (the “Guarantor Subsidiaries”). The Guarantor Subsidiaries generally are entities through which we operate our businesses or own such operating entities. We are not restricted from making investments in the Guarantor Subsidiaries and there are no significant restrictions on the ability of the Guarantor Subsidiaries to make distributions to MasTec, Inc. The 4.875% Notes are effectively subordinated to any secured debt we or our Guarantor Subsidiaries may incur, including the Credit Facility. The Credit Facility is collateralized by a first priority security interest in substantially all of our assets and the assets of our Guarantor Subsidiaries. In addition, a Guarantor Subsidiary’s guarantee is subject to release in certain customary circumstances, including:
upon the sale of a majority of the capital stock or substantially all of the assets of such Guarantor Subsidiary as permitted by the indenture;
upon legal defeasance of the 4.875% Senior Notes and guarantees or if the Guarantor Subsidiary’s guarantee under our Credit Facility and other indebtedness is released or discharged (other than due to payment under such guarantee);
if the Company designates any restricted subsidiary that is a Guarantor Subsidiary to be an unrestricted subsidiary in accordance with the indenture;
upon the 4.875% Senior Notes having investment grade ratings; and
upon liquidation or dissolution of a Guarantor Subsidiary, provided that all assets of such Guarantor Subsidiary are transferred to the Company or another Guarantor Subsidiary.
A court may find that the issuance of the 4.875% Senior Notes or the guarantee thereof was a fraudulent transfer or voidable transaction under applicable law, in which case (i) our payment obligations or those of the applicable Guarantor Subsidiary may be voided, (ii) the 4.875% Senior Notes or such guarantee may be subordinated to current or future debt of ours or such Guarantor Subsidiary or (iii) the holders of the 4.875% Senior Notes may be required to repay amounts received with respect to such guarantee. The guarantees are intended to be limited to the maximum amount able to be incurred without such guarantees constituting a fraudulent conveyance under applicable law; however, such limitations may not be effective to protect against (a) avoidance under fraudulent conveyance laws, (b) elimination of a Guarantor Subsidiary’s obligations or (c) reduction thereof that effectively makes the guarantee insufficient or worthless. In the event of a finding that a fraudulent transfer or voidable transaction occurred, the holders of the 4.875% Senior Notes may not receive any repayment on the 4.875% Senior Notes.

Our subsidiaries that are organized outside of the United States and certain domestic subsidiaries (collectively, the “Non-Guarantor Subsidiaries”) do not guarantee the 4.875% Senior Notes. The 4.875% Senior Notes are structurally subordinated to the indebtedness and other liabilities of our Non-Guarantor Subsidiaries.


The following tables present summarized combined financial information for MasTec, Inc. and the Guarantor Subsidiaries (together, the “Obligor Group”) on a combined basis, after elimination of intercompany balances and transactions between or among the Obligor Group and investments in and equity in earnings of the Non-Guarantor Subsidiaries:

Summarized Combined Statement of Operations Information (unaudited - in millions)
 For the Six Months Ended June 30, 2020
Revenue $2,823.4
Costs of revenue, excluding depreciation and amortization $2,391.3
Income before income taxes $129.0
Net income $99.2
Excluded from the table above are revenues, costs of revenue, excluding depreciation and amortization, and net losses of $0.9 million, $14.7 million and $9.2 million, respectively, from Non-Guarantor Subsidiaries for the six month period ended June 30, 2020. There were no non-controlling interests held by the Obligor Group for the six month period ended June 30, 2020.

Summarized Combined Balance Sheet Information (unaudited - in millions)
June 30,
2020
 December 31,
2019
Assets   
Current assets$1,921.5
 $1,933.4
Property and equipment, net, and operating lease assets$1,114.8
 $1,076.7
Goodwill and other intangible assets, net$1,270.4
 $1,265.6
Intercompany receivables due from Non-Guarantor Subsidiaries$688.9
 $678.9
Other assets$68.6
 $61.0
Liabilities   
Current liabilities$1,445.4
 $1,133.8
Long-term debt, including finance leases, and operating lease liabilities$1,235.4
 $1,453.9
Intercompany payables due to Non-Guarantor Subsidiaries$489.8
 $465.0
Other liabilities$442.9
 $493.1
See Note 15 - Related Party Transactions in the notes to the consolidated financial statements in this Form 10-Q, which is incorporated by reference, for information pertaining to related party transactions.
Off-Balance Sheet Arrangements
As is common in our industry, we have entered into certain off-balance sheet arrangements in the ordinary course of business. Our significant off-balance sheet transactions include liabilities associated with non-cancelable operating leaseswith durations of less than twelve months, letter of credit obligations, surety and performance and payment bonds entered into in the normal course of business, self-insurance liabilities, liabilities associated with multiemployer pension plans, liabilities associated with certain indemnification and guarantee arrangements and obligations relating to our costequity and equity investees,other investment arrangements, including our


variable interest entities. Refer to Note 14 - Commitments and Contingencies, Note 4 - Fair Value of Financial Instruments and Note 15 - Related Party Transactions in the notes to the condensed unaudited consolidated financial statements, which are incorporated by reference.
Impact of Inflation
The primary inflationary factors affecting our operations are labor and fuel costs, and to a lesser extent, material costs. In times of low unemployment, our labor costs may increase due to shortages in the supply of skilled labor. Additionally, the prices of oil and gas are subject to unexpected fluctuations due to events outside of our control, including geopolitical events and fluctuations in global supply and demand, which have recently caused volatility in the oil markets.demand. We closely monitor inflationary factors and any impact they may have on our operating results or financial condition.
ITEM 3.    QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
Interest Rate Risk
As of SeptemberJune 30, 2017,2020, our variable interest rate debt was primarily related to our Credit Facility. Interest on outstanding revolving loans and our Term Loanterm loan under our Credit Facility accrues at variable rates based, at our option, on a Eurocurrency rate, as defined in the Credit Facility, plus a margin, or a base rate, as defined in the Credit Facility, plus a margin. As of SeptemberJune 30, 2017,2020, we had $301$167 million aggregate principal amount of outstanding revolving loans under our Credit Facility with a weighted average interest rate of 2.96%2.38% and a term loan with a balance of $400 million with an interest rate of 2.86%1.43%. A 100 basis point increase in the applicable interest rates under our credit facilities would have increased our interest expense by approximately $5$4 million for the ninesix month period ended SeptemberJune 30, 2017.2020.
As of SeptemberJune 30, 2017,2020, our fixed interest rate debt primarily included $400 million aggregate principal amount of 4.875% Senior Notes and an aggregate $187$287 million of capitalfinance lease obligations, and notes payable, which accrued interest at a weighted average interest rate of approximately 3.4% as of September 30, 2017.4.0%. None of this debt subjects us to interest rate risk, but we may be subject to changes in interest rates if and when we refinance this debt at maturity or otherwise.


Foreign Currency Risk
Certain of our consolidated revenue and operating expenses are in foreign currencies. Our foreign operations are primarily in Canada. Revenue generated from foreign operations represented 3%2% of our total revenue for the ninesix month period ended SeptemberJune 30, 2017.2020. Revenue and expense related to our foreign operations are, for the most part, denominated in the functional currency of the foreign operation, which minimizes the impact that fluctuations in exchange rates would have on net income or loss. We are, however, subject to fluctuations in foreign currency exchange rates when transactions are denominated in currencies other than the functional currencies. Such transactions were not material to our operations for the three or ninesix month periods ended SeptemberJune 30, 2017.2020. Translation gains or losses, which are recorded in other comprehensive income or loss, result from translation of the assets and liabilities of our foreign subsidiaries into U.S. dollars. For the three and nine month periods ended September 30, 2017, foreign currency translation effects totaled approximately $0.6 million and $2.4 million of gains, respectively, and related primarily to our Canadian operations.
Our exposure to fluctuations in foreign currency exchange rates could increase in the future if we continue to expand our operations outside of the United States. We seek to manage foreign currency exposure by minimizing our consolidated net asset and liability positions in currencies other than the functional currency, which exposure was not significant to our consolidated financial position as of SeptemberJune 30, 2017.2020. We may enter into foreign currency derivative contracts in the future to manage such exposure.

Other Market Risk
As discussed in Note 4 - Fair Value of Financial Instruments in the notes to the condensed unaudited consolidated financial statements, which is incorporated by reference, we have certain investments that may be subject to market risk and could be subject to volatility based on market conditions.
ITEM 4.CONTROLS AND PROCEDURES
Evaluation of Disclosure Controls and Procedures
As of the end of the period covered by this Quarterly Report on Form 10-Q, our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)). We maintain disclosure controls and procedures designed to ensure that information required to be disclosed in reports filed or submitted by us under the Exchange Act is recorded, processed, summarized and reported within time periods specified in the SEC’s rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by us in the reports that we file or submit under the Exchange Act is accumulated and communicated to management, including our Chief Executive Officer and Chief Financial Officer, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure. Based on management’s evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective at the reasonable assurance level as of SeptemberJune 30, 2017.2020.
Changes in Internal Control over Financial Reporting
There have been no changes in the Company’s internal control over financial reporting during the quarter ended SeptemberJune 30, 20172020 that have materially affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.




PART II.     OTHER INFORMATION
ITEM 1.LEGAL PROCEEDINGS
Legacy Litigation
Refer to Note 14 - Commitments and Contingencies in the notes to our condensed unaudited consolidated financial statements included in this Quarterly Report on Form 10-Q, which is incorporated by reference in this Item 1, for a discussion of any recent material developments related to our legal proceedings since the filing of our 20162019 Form 10-K.
ITEM 1A.    RISK FACTORS
ThereExcept as set forth below subject to the potential effects of the COVID-19 pandemic on certain of the risks we normally face in operating our business, including those disclosed in our 2019 Form 10-K, there have been no material changes to either the cautionary statement regarding forward-looking statements or to any of the risk factors disclosed in our 20162019 Form 10-K, as updated by our Quarterly Report on Form 10-Q.10-Q and other filings we make with the SEC.
Our business and operations, and the operations of our customers, may be adversely affected by epidemics or pandemics such as the COVID-19 pandemic.
We may face risks related to health epidemics and pandemics or other outbreaks of communicable diseases. The global spread of COVID-19 has created significant volatility, uncertainty and economic disruption, including significant volatility in the U.S. economy and financial markets. The extent to which the COVID-19 pandemic could affect our business, operations, financial results and the trading price of our common stock will depend on numerous evolving factors that we may not be able to accurately predict, including the duration and scope of the pandemic, governmental and business actions that have been and continue to be taken in response to the pandemic, including mitigation efforts such as stay at home and other social distancing orders, as well as the impact of the pandemic on the U.S. economy, economic activity and actions taken in response, including from stimulus efforts such as the Families First Coronavirus Act and the Coronavirus Aid, Relief and Economic Security (“CARES”) Act.
A public health epidemic or pandemic, such as the COVID-19 pandemic, poses the risk that we or our employees, customers and/or business partners may be prevented from conducting ordinary course business activities for an indefinite period of time, including due to shutdowns or cancellations that may be mandated or requested by governmental authorities or others, or that the pandemic may otherwise interrupt or affect business activities. The COVID-19 pandemic has had a negative effect on our operations. While we expect this to continue during the remainder of 2020 at least, we cannot predict the extent or duration of these effects.We have adjusted standard operating procedures within our business operations to ensure continued employee and customer safety and are continually monitoring evolving health guidelines as well as market conditions and responding to changes as appropriate. We cannot be certain, however, that these efforts will prevent further disruption due to effects of the pandemic on business and market conditions. Additionally, we could be exposed to increased risks and costs associated with workplace health claims. In light of the federal and state mandates implemented to control the spread of COVID-19, we have taken steps that allow administrative personnel to work remotely. Many of these measures are being deployed for the first time and, despite our implementation of information technology security measures, there is no guarantee that the data security and privacy safeguards we have put in place will be completely effective or that we will not encounter some of the common risks associated with employees accessing Company data and systems remotely.
If overall global economic conditions weaken as a result of efforts to contain the spread of COVID-19, this may result in a reduction in demand across our end markets, including in the oil and gas sector, which has recently experienced significant volatility in oil prices and demand. Unfavorable market conditions, market uncertainty and/or economic downturns could have a negative effect on demand for our customers’ services and/or the profitability of services. Our customers may not have the ability to fund capital expenditures for infrastructure, or may have difficulty obtaining financing for planned projects, which could reduce their capital spending and/or result in reduced demand for our services and/or delays or cancellations of current or planned future projects. We could also incur incremental costs to operate in the current environment or experience lower levels of overhead absorption from a reduction in revenue, both of which could negatively affect our margins and profitability. Additionally, the economic and market disruptions resulting from COVID-19 could also lead to greater than normal uncertainty with respect to the realization of estimated amounts, including our estimates for backlog, revenue recognition, recoverability of goodwill, intangible assets and other investments and our provisions for credit losses. Our customers could seek to delay payments to us as a result of the pandemic’s financial effects on them, which could negatively affect our cash flows and liquidity. The ultimate extent, duration and impact of the COVID-19 pandemic is uncertain, the effects of which could be significant, and we cannot predict or quantify with any certainty the extent to which it could adversely affect our future financial condition, results of operations, liquidity, cash flows or the market price of our common stock.


ITEM 2.    UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS
Issuer Purchases of Equity Securities
The following table provides information about repurchases of our common stock during the quarter ended SeptemberJune 30, 20172020:



Period
 
Total Number of Shares Purchased (a)
 

Average Price Paid per Share
 
Total Number of Shares Purchased as Part of Publicly Announced Program (b)
 Approximate Dollar Value of Shares that May Yet be Purchased under the Program
July 1 through July 31 
 $
 
 $100,000,000
August 1 through August 31 462
 $40.00
 
 $100,000,000
September 1 through September 30 
 $
 
 $100,000,000
Total 462
   
  



Period
 
Total Number of Shares Purchased (a) (b)
 Average Price Paid per Share 
Total Number of Shares Purchased as Part of Publicly Announced Program (c)
 
Approximate Dollar Value of Shares that May Yet be Purchased under the Program (d)
April 1 through April 30 
 $
 
 $159,419,290
May 1 through May 31 27,724
 $29.68
 27,085
 $158,617,588
June 1 through June 30 
 $
 
 $158,617,588
Total 27,724
   27,085
  
(a)ReflectsIncludes 27,085 of repurchases under share repurchases associatedrepurchase programs and 639 of shares withheld for income tax purposes in connection with certain employee electionsshares issued under compensation and benefit programs.
(b)NoExcept to the extent described in (a) above with respect to share repurchases associated with compensation and benefit programs, all shares were purchased for the three months ended September 30, 2017acquired in open-market transactions.
(c)Shares repurchased under the Company’sour December 2018 $100 million 2016 share repurchase program, which was publicly announced on February 26, 2016December 21, 2018.
(d)Includes $8.6 million available for repurchase under our December 2018 share repurchase program and does not have an expiration date.$150.0 million available for repurchase under our March 2020 $150 million share repurchase program, which was publicly announced on March 19, 2020.
ITEM 4.MINE SAFETY DISCLOSURES
ITEM 4.    MINE SAFETY DISCLOSURES
Not applicable.
ITEM 6.    EXHIBITS
See theThe Exhibit Index following the signatures page to this Form 10-Q forbelow contains a list of exhibits filed or furnished with this Form 10-Q, which Exhibit Index is incorporated herein by reference.10-Q.

Exhibit No.Description
10.1*+
10.2*+
22.1*
31.1*
31.2*
32.1**
32.2**
101.INSInline XBRL Instance Document - The instance document does not appear in the interactive data file because its XBRL tags are embedded within the Inline XBRL document.
101.SCHInline XBRL Taxonomy Extension Schema
101.CALInline XBRL Taxonomy Extension Calculation Linkbase
101.DEFInline XBRL Taxonomy Extension Definition Linkbase
101.LABInline XBRL Taxonomy Extension Label Linkbase
101.PREInline XBRL Taxonomy Extension Presentation Linkbase
104The cover page of MasTec, Inc.’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2020, formatted in Inline XBRL (included with the Exhibit 101 attachments).
______________
*Filed herewith.
**Furnished herewith.
+Management contract or compensation plan arrangement.






SIGNATURES


Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
 
  MASTEC, INC.
Date:November 2, 2017July 30, 2020 
  
/s/  JOSÉ R. MAS
  José R. Mas
  Chief Executive Officer
  (Principal Executive Officer)
   
  
/s/  GEORGE L. PITA
  George L. Pita
  Chief Financial Officer
  (Principal Financial and Accounting Officer)



Exhibit Index


41
______________
*Filed herewith.
**Furnished herewith.


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