Share-Based Compensation (Details 2) (Options, UHS Holdco, Inc., (Parent), USD $)	6 Months Ended
	Jun. 30, 2013
Options | UHS Holdco, Inc., (Parent)
Assumptions used in determining the fair value of stock options granted under the Black-Scholes model
Risk-free interest rate (as a percent)	1.25%
Expected volatility (as a percent)	35.30%
Expected option life	6 years 9 months
Black-Scholes Value of options (in dollars per share)	$ 0.53