Income Taxes (Tables)

6 Months Ended

Jun. 30, 2018

Income Taxes

Reconciliation Between U.S. Corporate Income Tax Rate and Effective Income Tax Rate from Continuing Operations (Table)

	For the three months ended		For the six months ended
	June 30,		June 30,
	2018	2017	2018	2017
U.S. corporate income tax rate	21  %	35  %	21  %	35  %
U.S. tax rate change - prior year remeasurements	(4)	—	(3)	—
Dividends received deduction	(3)	(12)	(3)	(11)
Tax credits	(3)	(3)	(3)	(3)
Impact of equity method presentation	(1)	(3)	(1)	(3)
State income taxes	1	—	1	—
Other	—	(3)	(1)	(4)
Effective income tax rate	11  %	14  %	11  %	14  %

Changes in Unrecognized Tax Benefits (Table)

	For the six months ended		For the year ended
	June 30, 2018		December 31, 2017
	(in millions)
Balance at beginning of period	$	194.1	$	207.8
Additions based on tax positions related to the current year	0.3		7.2
Additions for tax positions of prior years	0.4		20.2
Reductions for tax positions related to the current year	(4.8)		(3.3)
Reductions for tax positions of prior years	—		(1.1)
Settlements	(135.5)		(36.7)
Balance at end of period (1)	$	54.5	$	194.1

(1) Of this amount, $31.5 million, if recognized, would reduce the 2018 effective income tax rate. We recognize interest and penalties related to uncertain tax positions in operating expenses within the consolidated statements of operations.