Quarterly Financial Data

12 Months Ended

Dec. 31, 2016

Quarterly Financial Data [Abstract]

Quarterly Financial Data

Note 14–Quarterly Financial Data (Unaudited)

Quarterly financial information for the years ended December 31, 2016 and 2015 are summarized as follows:

(Millions)	2016								2015
Quarters ended		12/31		9/30		6/30		3/31		12/31		9/30		6/30		3/31
Revenues	$	179	$	180	$	179	$	180	$	180	$	187	$	193	$	195
Pretax income		20		70		65		57		68		45		69		70
Net income	$	29	$	60	$	57	$	51	$	58	$	39	$	49	$	68

Pretax income for the three months ended September 30, 2015 reflects out-of-period correction that decreased expenses by $20.1 million. The correction relates to incorrect mark-to-market valuation of spot trades reflected in June 30, 2015 results. None of the current or prior period financial statements were materially misstated as a result of this error.