Income Taxes (Details 2) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2013
Income Tax [Line Items]
Income tax expense (benefit)	$ 32	$ 18	$ 93	$ 186
New VH
Income Tax [Line Items]
Net operating loss carryforwards					$ 760
Net operating loss indemnification amount					200
Net operating loss utilized - New VH NOL			291
Tax benefit related to stock repurchase			102
Tax credit reserve for repurchase of stock	102		102
Indemnification asset recorded in other assets	191		191
Indemnification asset recorded in treasury stock	$ 191		191
New VH | Expected
Income Tax [Line Items]
Income tax expense (benefit)					$ (266)
King
Income Tax [Line Items]
Uncertain tax positions assumed			$ 93