Stock Split (Details) - Common Stock - shares		12 Months Ended
	Dec. 05, 2014	Dec. 31, 2014	Dec. 17, 2014
Class of Stock [Line Items]
Stock split, conversion ratio	2	2
Stock split, stock dividend	100.00%	100.00%
Common stock split, additional shares issued for every share held (in shares)			1
Common stock, shares outstanding (in shares)		295,200,000	147,600,000