Quarterly report pursuant to Section 13 or 15(d)

Equity and Long-Term Incentive Compensation Plans (Cash Long-Term Incentive Plan) (Details)

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Equity and Long-Term Incentive Compensation Plans (Cash Long-Term Incentive Plan) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Dec. 31, 2013
Vesting_Installments
Dec. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Cash Long-Term Incentive Plan        
Cash-based long-term incentive plan, approved amount $ 63.4   $ 63.4  
Cash-based long-term incentive plan, committed amount 108.7   108.7  
Cash Long-Term Incentive Plan
       
Cash Long-Term Incentive Plan        
Cash long-term incentive plan, number of equal vesting installments 4      
Cash long-term incentive plan, percentage of equal vesting installments 25.00%      
Cash long-term incentive plan, vesting period 4 years      
Cash long-term incentive program, compensation expense 7.3 3.5 11.4 3.5
Cash long-term incentive plan, unrecognized compensation balance $ 101.0   $ 101.0