Selected Financial Data

(In millions, except per share information) As of and for the years ended December 31,

SUMMARY BALANCE SHEET 2018 2017
Total current assets
$3,326 $2,870
Property and equipment, net
1,276 1,288
Other assets, net
294 190
Other intangible assets, net
280 263
Goodwill
1,900 1,869
Total assets
$7,076 $6,480
     
Total current liabilities
$1,806 $1,492
Long-term debt and notes payable, net
$1,041 $671
Deferred income taxes
219 179
Insurance and other non-current liabilities
405 342
Total equity
3,605 3,796
Total liabilities and stockholders' equity
$7,076 $6,480
SUMMARY INCOME STATEMENT 2018 2017
Revenues
$11,171 $9,466
Operating income
$540 $379
Net income attributable to common stock
$293 $315
Diluted earnings per share attributable
to common stock
$1.90 $2.00
Adjusted diluted earnings per share
attributableto common stock
$2.81 $1.97
Adjusted EBITDA
$902 $709
     
SUMMARY CASH FLOW DATA    
Net cash provided by operating activities
$359 $372
Capital expenditures, net of proceeds
from sales
262 221
Free cash flow (1)
$97 $151

(1) Free cash flow (a non-GAAP measure) is reconciled to net cash provided by operating activities (the most directly comparable GAAP measure).

Reconciliation of Non-GAAP Financial Measures

Adjusted diluted earnings per share from continuing operations attributable to common stock:
(In millions, except per share information) For the Years Ended December 31,

  2018 2017 2016 2015
Net income from continuing operations attributable to common stock (GAAP as reported) $293 $315 $199 $120
Adjustments:        
Impact of Tax Cut and Jobs Act 33 (70)    
Income tax impact primarily related to entity restructuring and recapitalization efforts 2 (18)    
Change in fair value of contingent consideration liabilities (11) (5)    
Impact of income tax contingency releases (8) (7) (20)  
Severance and restructuring charges 1   6  
Asset impairment charges 53 60 8 58
Impact of Alberta tax law change       5
Impact of tax benefit from realization of previously unrecognized deferred tax asset       (4)
Acquisition and integration costs 17 11 3 8
Income tax impact of adjustments (19) (24) (4) (16)
Adjusted net income from continuing operations attributable to common
stock before certain non-cash adjustments
362 261 192 171
Non-cash stock based compensation 52 47 40 37
Amortization of intangibles 44 32 32 35
Income tax impact of non-cash adjustments (25) (29) (26) (26)
Adjusted net income from continuing operations attributable to common
stock for adjusted diluted earnings per share from continuing operations
433 310 238 217
Calculation of weighted average shares for adjusted diluted earnings per share
from continuing operations attributable to common stock:
       
Weighted average shares outstanding for basic earnings per share 153 156 157 195
Effect of dilutive stock options 1 1 0 0
Weighted average shares outstanding for adjusted diluted earnings per share 154 157 157 195
Earnings Attributable to Common Stock:        
Diluted earnings per share from continuing operations $1.90 $2.00 $1.26 $0.62
Adjusted diluted earnings per share from continuing operations $2.81 $1.97 $1.51 $1.11

The non-GAAP measure of adjusted diluted earnings per share from continuing operations is provided to enable investors to evaluate performance excluding the effects of items that management believes impact the comparability of operating results between periods.

Reconciliation of EBITDA and Adjusted EBITDA

(In thousands) For the Years Ended December 31,

  2018 2017 2016 2015
Net income attributable to common stock (as defined by GAAP) $293,346 $314,978 $198,725 $120,286
Interest expense 36,945 20,946 14,887 8,024
Interest income (1,555) (832) (2,423) (1,493)
Provision for income taxes 161,659 35,532 107,246 97,472
Amortization of intangible assets 43,994 32,205 31,685 34,848
Equity in losses of unconsolidated affiliates 52,867 10,945 979 466
Depreciation expense 202,519 183,808 170,240 162,845
EBITDA $789,775 $597,582 $521,339 $422,448
Non-cash stock-based compensation 52,484 46,448 41,134 36,939
Acquisition and integration costs 17,233 10,579 3,053 7,966
Asset impairment charges 52,658 59,950 7,964 58,451
Change in fair value of contingent consideration liabilities (11,248) (5,171)    
Severance and restructuring charges 1,326   6,352  
Adjusted EBITDA $902,228 $709,388 $579,842 $525,804
Consolidated Revenues $11,171,423 $9,466,478 $7,651,319 $7,572,436
Adjusted EBITDA Margin 8.1% 7.5% 7.6% 6.9%

The non-GAAP measures of EBITDA and Adjusted EBITDA are provided to enable investors to evaluate performance excluding the effects of items that management believes impact the comparability of operating results between periods.

Remaining Performance Obligations and Backlog

As of December 31, 2018 (in millions)

This table presents Quanta’s backlog by reportable segment and includes an estimate of the backlog amounts expected to be realized within 12 months of each balance sheet date.

  12 Month Total
Electric Power Infrastructure Services    
Remaining performance obligations $2,094 $3,046
Estimated orders under MSAs and short-term, non-fixed price contracts 2,468 5,500
Backlog 4,561 8,545
Pipeline and Industrial Infrastructure Services    
Remaining performance obligations 1,004 1,636
Estimated orders under MSAs and short-term, non-fixed price contracts 1,411 2,161
Backlog 2,415 3,797
Total    
Remaining performance obligations 3,097 4,682
Estimated orders under MSAs and short-term, non-fixed price contracts 3,879 7,661
Backlog $6,976 $12,343