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Long-Term Debt And Cash Flow Hedges (Narrative 1) (Details) (USD $)	3 Months Ended			3 Months Ended			0 Months Ended	3 Months Ended				3 Months Ended		3 Months Ended						3 Months Ended			3 Months Ended		3 Months Ended			3 Months Ended				3 Months Ended
	Mar. 31, 2012	Nov. 15, 2010	Oct. 31, 2010	Mar. 31, 2012 ABR-Based Loans [Member]	Oct. 31, 2010 Commercial Paper Rate Plus [Member]	Mar. 31, 2012 Credit Agreement And Securitization [Member]	Sep. 29, 2010 7.00% Senior Unsecured Notes [Member]	Mar. 31, 2012 7.00% Senior Unsecured Notes [Member]	Mar. 31, 2012 7.125% Coupon Rate Senior Notes Due 2016 [Member]	Jun. 30, 2008 7.125% Coupon Rate Senior Notes Due 2016 [Member]	Jun. 30, 2006 7.125% Coupon Rate Senior Notes Due 2016 [Member]	Mar. 31, 2011 October 1, 2014 Threshold [Member]	Mar. 31, 2012 October 1, 2014 Threshold [Member]	Mar. 31, 2012 October 1, 2015 Threshold [Member]	Mar. 31, 2012 October 1, 2016 Threshold [Member]	Mar. 31, 2012 Revolving Credit Facility [Member]	Nov. 15, 2010 Revolving Credit Facility [Member]	Mar. 31, 2012 Letters Of Credit [Member]	Nov. 15, 2010 Letters Of Credit [Member]	Mar. 31, 2012 Term Loan B Facility [Member]	Mar. 31, 2011 Term Loan B Facility [Member]	Nov. 15, 2010 Term Loan B Facility [Member]	Mar. 31, 2012 Term Loan B Facility [Member] Eurodollar-Based Loans [Member]	Mar. 31, 2012 Term Loan B Facility [Member] Minimum [Member]	Mar. 31, 2012 Term Loan B Facility [Member] Minimum [Member] One Month Eurodollar Rate Plus Index Based Loans [Member]	Mar. 31, 2012 Term Loan B Facility [Member] Minimum [Member] One, Two, Three, Six Month Eurodollar Rate Plus Index Based Loans [Member]	Mar. 31, 2012 Term Loan B Facility [Member] Maximum [Member]	Mar. 31, 2012 Term Loan B Facility [Member] Maximum [Member] One Month Eurodollar Rate Plus Index Based Loans [Member]	Mar. 31, 2012 Term Loan B Facility [Member] Maximum [Member] One, Two, Three, Six Month Eurodollar Rate Plus Index Based Loans [Member]	Mar. 31, 2012 Term Loan A Facility [Member]	Nov. 15, 2010 Term Loan A Facility [Member]	Mar. 31, 2012 Term Loan A Facility [Member] Eurodollar-Based Loans [Member]	Mar. 31, 2012 Term Loan A Facility [Member] Minimum [Member] One Month Eurodollar Rate Plus Index Based Loans [Member]	Mar. 31, 2012 Term Loan A Facility [Member] Minimum [Member] One, Two, Three, Six Month Eurodollar Rate Plus Index Based Loans [Member]	Mar. 31, 2012 Term Loan A Facility [Member] Maximum [Member] One Month Eurodollar Rate Plus Index Based Loans [Member]	Mar. 31, 2012 Term Loan A Facility [Member] Maximum [Member] One, Two, Three, Six Month Eurodollar Rate Plus Index Based Loans [Member]	Mar. 31, 2012 Short-Term, On-Demand Credit Facility [Member]	Mar. 31, 2012 Universal Health Services Inc [Member]
Short-term Debt [Line Items]
Line of credit facility amount outstanding		$ 3,450,000,000															$ 800,000,000		$ 125,000,000			$ 1,600,000,000									$ 1,050,000,000						$ 9,000,000
Line of credit facility, maturity date																														November 15, 2015
Principal payments																				13,000,000	125,000,000									35,000,000
LIBOR indexes applicable to credit agreement	one, two, three or six month Eurodollar rate (at our election)
Rate adjustment to weighted average federal funds rate for credit facility borrowings																0.50%
Rate adjustment to one month Eurodollar rate on credit facility borrowings																1.00%
Margin percentage adjustment																								1.00%			1.50%
Consolidated leverage ratio																									1.75%	2.75%		2.00%	3.00%				0.50%	1.50%	1.25%	2.25%
Current applicable margins				0.75%																			2.75%									1.75%
Treasury rate plus, basis points							50
Unsecured Notes make-whole redemption price, percent													103.50%	101.75%	100.00%
Commitment percentage for facility fee			102.00%
Credit facility fee, percentage			0.375%
Variable interest rate					0.475%
Commitment fee, percentage of amount outstanding																					1.00%
Accounts receivable Securitization program credit facility, borrowing capacity			240,000,000
Accounts receivable Securitization program credit facility, amount outstanding	240,000,000
Accounts receivable Securitization program credit facility original amount			200,000,000
Accounts receivable Securitization program credit facility, maturity date	Oct. 25, 2013
Available borrowing capacity						509,000,000
Amount outstanding	219,000,000																	63,000,000																			9,000,000
Senior notes, issued							250,000,000			150,000,000	250,000,000
Interest rate							7.00%		7.125%	7.125%	7.125%
Senior notes, maturity date								October 1, 2018	June 30, 2016			October 1, 2014		October 1, 2015	October 1, 2016
Previously held minority ownership interest, percentage	100.00%																																					100.00%
Carrying amount of debt	3,580,000,000
Fair value of debt	$ 3,650,000,000

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