Stock-Based Compensation (Narrative) (Detail) (USD $)	3 Months Ended		9 Months Ended		0 Months Ended			3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Oct. 16, 2014	Oct. 09, 2014	Sep. 17, 2014	Sep. 30, 2014	Dec. 31, 2014	Jun. 30, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Reclassification of common unit liability to additional paid in capital			$ 490,200,000
Vesting date			May 15, 2017
Common stock distributed in connection with non-liquidating distribution	243,008,679		243,008,679			20,460,047				223,000,000
Total stock-based compensation expense	40,700,000	65,200,000	157,800,000	165,100,000
Award recorded as liability	4,915,500,000		4,915,500,000							4,634,000,000
PCIP [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Incentive plan termination period					10 years
CII [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares authorized	625,000,000		625,000,000
Unrecognized compensation cost	124,100,000		124,100,000
Common stock distributed in connection with non-liquidating distribution					1,000
Common stock distributed in exchange for vested preferred units						256,265
CII [Member] | Common Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost	90,600,000		90,600,000
Common unit unvested						6,392,071
Common stock distributed for existing share holders						10,294,867
Total stock-based compensation expense	23,600,000	65,100,000	133,200,000	164,700,000
CII [Member] | Preferred Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total stock-based compensation expense	100,000	100,000	300,000	400,000
Part A Restricted Stock Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
RSUs outstanding	494,825		494,825
Unrecognized compensation cost	15,400,000		15,400,000
Total stock-based compensation expense	3,500,000		6,100,000
Compensation expense associated with vested portion	2,900,000		5,100,000
Award recorded as liability	1,900,000		1,900,000
Part A Restricted Stock Units [Member] | Dan Caruso [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost	1,800,000		1,800,000
Total stock-based compensation expense	600,000		1,000,000
One-time grant amount							2,800,000
One-time grant shares							144,737
Annual salary							17,500	400,000
Part B Restricted Stock Units [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
RSUs outstanding	935,318		935,318
Unrecognized compensation cost	28,300,000		28,300,000
Total stock-based compensation expense	$ 13,500,000		$ 18,200,000
One-time grant shares	359,658								575,660