Subsequent Event (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended	6 Months Ended
	Jul. 01, 2015	Sep. 30, 2015	Jun. 30, 2015
Subsequent Event [Line Items]
Stock Redeemed or Called During Period, Shares			37,192,413
Preferred Stock, Redemption Amount			$ 932
Subsequent Event [Member]
Subsequent Event [Line Items]
Approved dividend, amount per share		$ 0.375
Estimated aggregate dividend payment		$ 420
Stock Redeemed or Called During Period, Shares	22,807,587
Preferred Stock, Redemption Amount	$ 570