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Income Taxes Income Taxes (Tables)
9 Months Ended
Mar. 31, 2017
Income Tax Disclosure [Abstract]  
Schedule of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns Roll Forward
A reconciliation of its reserves for uncertain tax positions, excluding accrued interest and penalties, for March 31, 2017 is as follows:
(Dollars in millions)
 
Balance at June 30, 2016
$
61.5

Additions for tax positions of current year
1.6

Reductions for tax positions of prior years
(1.4
)
Lapse of the applicable statute of limitations
(0.2
)
Balance at March 31, 2017
$
61.5