Financing Arrangements (Credit Facility Debt) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Dec. 31, 2012
Revolving credit facility [Member]
Line of Credit Facility [Line Items]
Term	5 years
Maximum borrowing capacity	$ 365.0
Remaining borrowing capacity	327.2
Revolving credit facility [Member] | LIBOR [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	3.25%
Revolving credit facility [Member] | LIBOR [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	3.50%
Revolving credit facility [Member] | Alternative base rate [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.25%
Revolving credit facility [Member] | Alternative base rate [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.50%
Term loan facility [Member]
Line of Credit Facility [Line Items]
Face amount of notes issued	$ 815.0
Term	6 years
Interest rate at period end	5.00%
Quarterly payment as a percent of principal amount	0.25%
Term loan facility [Member] | LIBOR [Member]
Line of Credit Facility [Line Items]
Floor on variable rate	1.50%
Basis spread on variable rate	3.50%
Term loan facility [Member] | Alternative base rate [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.50%