Shareholder's Equity - Narrative (Details)					12 Months Ended
	Feb. 04, 2016 USD ($)	Oct. 29, 2013 shares	May. 07, 2013 USD ($) $ / shares shares	Apr. 11, 2013 shares	Dec. 31, 2015 shares	Dec. 31, 2014 shares	Dec. 31, 2013 shares	Dec. 31, 2012 shares
Class of Stock [Line Items]
Common stock, shares outstanding				230,000,000	209,095,793	241,875,485	261,700,000	230,000,000
Stock split conversion ratio				2,295.248835
Shares issued by parent company and subsidiaries		37,950,000			0	0	30,800,000
Number of warrants issued and outstanding			26,050,846
Percentage of issued warrants to total shares issued and outstanding			9.99%
Exercise price of warrants | $ / shares			$ 48.75
Dividend per share, cash paid | $ / shares			$ 0.01
Fair value of warrants issued | $			$ 94,000,000
Subsequent Event
Class of Stock [Line Items]
Increase in stock repurchase program, authorized amount | $	$ 700,000,000