Income Taxes (Tables)

3 Months Ended

Mar. 31, 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 March 31,
	2018	2017
U.S. corporate income tax rate	21 %	35 %
Dividends received deduction	(4)	(10)
Tax credits	(3)	(3)
Settled benefit from charitable contribution of capital gain property	(2)	—
Impact of equity method presentation	(1)	(4)
Share-based compensation	(1)	(1)
Other	2	(2)
Effective income tax rate	12 %	15 %

Changes in Unrecognized Tax Benefits (Table)

	For the three months ended		For the year ended
	March 31, 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	0.1		7.2
Additions for tax positions of prior years	0.3		20.2
Reductions for tax positions related to the current year	(0.5)		(3.3)
Reductions for tax positions of prior years	—		(1.1)
Settlements	(102.0)		(36.7)
Balance at end of period (1)	$	92.0	$	194.1

(1) Of this amount, $43.0 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.