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Income Taxes (Tables)
 9 Months Ended
Sep. 30, 2018
Income Tax Disclosure [Abstract]  
Reconciliation between the statutory U.S. Federal income tax rate and the Company's effective income tax rate on income before income taxes
The following is a reconciliation between the statutory U.S. federal income tax rate and the Company’s effective income tax rate on income before income taxes:
 
Three Months Ended
September 30,

Nine Months Ended
September 30,
 
2018

2017

2018

2017
Statutory rate
21.0
 %

35.0
 %

21.0
 %

35.0
 %
State taxes
2.3


1.4


1.9


1.4

Changes in state tax laws
—


0.5


1.0


0.2

Noncontrolling interest in partially-owned subsidiaries
(1.2
)

(1.4
)

(0.4
)

(0.9
)
Impairment and other foreign losses
9.2


0.4


2.6


0.5

Changes in valuation allowance and reserves
(1.0
)

0.1


0.6


0.1

Effects of Federal Tax Reform
(2.6
)

—


(0.7
)

—

Settlements with tax authorities
—


—


—


(2.1
)
Equity compensation
(0.4
)

(0.2
)

(1.8
)

0.8

Other, net
0.1


1.1


1.2


1.0

Effective rate
27.4
 %

36.9
 %

25.4
 %

36.0
 %
Change in unrecognized tax benefits
The change in unrecognized tax benefits for the nine months ended September 30, 2018 and 2017 was as follows:
 
Nine Months Ended
September 30,
 
2018
 
2017
 
(in millions)
Beginning balance
$
8.2

 
$
28.2

Additions for tax positions of prior years
1.6

 
0.2

Settlements
(1.5
)
 
(23.3
)
Expiration of statute of limitations
(0.5
)
 
—

Ending balance
$
7.8

 
$
5.1