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QUARTERLY FINANCIAL DATA (UNAUDITED) (Notes)
 12 Months Ended
Dec. 31, 2018
Quarterly Financial Data [Abstract]  
QUARTERLY FINANCIAL DATA (UNAUDITED)
QUARTERLY FINANCIAL DATA (UNAUDITED)

Year Ended December 31, 2018
 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
 
 
(Thousands of dollars, except per share amounts)
Total revenues
 
$
3,102,077

 
$
2,960,529

 
$
3,393,890

 
$
3,136,700

Net income
 
$
266,049

 
$
282,179

 
$
313,916

 
$
292,888

Net income attributable to ONEOK
 
$
264,508

 
$
281,048

 
$
313,259

 
$
292,888

Net income attributable to common shareholders
 
$
264,233

 
$
280,773

 
$
312,984

 
$
292,613

Earnings per share total
 
 
 
 
 
 
 
 
Basic
 
$
0.65

 
$
0.68

 
$
0.76

 
$
0.71

Diluted
 
$
0.64

 
$
0.68

 
$
0.75

 
$
0.70


In the third quarter 2018, we acquired the remaining 20 percent interest in WTLPG for $195 million with cash on hand. We are now the sole owner of the West Texas LPG pipeline system.

Year Ended December 31, 2017
 
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
 
 
 
 
 
 
(Thousands of dollars except per share amounts)
Total revenues
 
$
2,749,611

 
$
2,725,772

 
$
2,906,366

 
$
3,792,158

Net income
 
$
186,185

 
$
175,991

 
$
166,531

 
$
64,812

Net income attributable to ONEOK
 
$
87,361

 
$
71,693

 
$
165,742

 
$
63,045

Net income attributable to common shareholders
 
$
87,361

 
$
71,476

 
$
165,466

 
$
62,771

Earnings per share total
 
 
 
 
 
 
 
 
Basic
 
$
0.41

 
$
0.34

 
$
0.43

 
$
0.16

Diluted
 
$
0.41

 
$
0.33

 
$
0.43

 
$
0.16


The fourth quarter 2017 includes a one-time noncash charge of $141.3 million related to revaluation of our deferred tax balances and a valuation allowance on certain state net operating loss and tax credit carryforwards resulting from the enactment of the Tax Cuts and Jobs Act, as described in Note L.

The third quarter 2017 includes noncash impairment charges of $20.2 million related to Natural Gas Gathering and Processing assets and equity investments.

The second quarter 2017 includes a $20.0 million noncash expense related to our Series E Preferred Stock contribution to the Foundation and operating costs related to the Merger Transaction of $30.0 million.