Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 35,078	$ 32,069	$ 16,261	$ 17,238
Accounts receivable, net	1,383,964us-gaap_AccountsReceivableNetCurrent	1,282,735us-gaap_AccountsReceivableNetCurrent
Supplies	108,269us-gaap_Supplies	108,115us-gaap_Supplies
Deferred income taxes	109,402	114,565
Other current assets	80,524us-gaap_OtherAssetsCurrent	77,654us-gaap_OtherAssetsCurrent
Total current assets	1,717,237us-gaap_AssetsCurrent	1,615,138us-gaap_AssetsCurrent
Property and equipment	6,301,410us-gaap_PropertyPlantAndEquipmentGross	6,212,030us-gaap_PropertyPlantAndEquipmentGross
Less: accumulated depreciation	(2,610,630)	(2,532,341)
Property, plant and equipment, net, Total	3,690,780us-gaap_PropertyPlantAndEquipmentNet	3,679,689us-gaap_PropertyPlantAndEquipmentNet
Other assets:
Goodwill	3,297,436us-gaap_Goodwill	3,291,213us-gaap_Goodwill
Deferred charges	38,761us-gaap_DeferredOfferingCosts	40,319us-gaap_DeferredOfferingCosts
Other	340,141	348,084
Total assets	9,084,355us-gaap_Assets	8,974,443us-gaap_Assets	8,431,385us-gaap_Assets
Current liabilities:
Current maturities of long-term debt	89,023us-gaap_LongTermDebtCurrent	68,319us-gaap_LongTermDebtCurrent
Accounts payable and accrued liabilities	1,101,143	1,113,062
Federal and state taxes	65,106us-gaap_TaxesPayableCurrent	1,446us-gaap_TaxesPayableCurrent
Total current liabilities	1,255,272us-gaap_LiabilitiesCurrent	1,182,827us-gaap_LiabilitiesCurrent
Other noncurrent liabilities	277,617us-gaap_OtherLiabilitiesNoncurrent	268,555us-gaap_OtherLiabilitiesNoncurrent
Long-term debt	3,051,571us-gaap_LongTermDebtNoncurrent	3,210,215us-gaap_LongTermDebtNoncurrent
Deferred income taxes	280,662	282,214
Redeemable noncontrolling interests	254,843	239,552
Equity:
UHS common stockholders' equity	3,906,963us-gaap_StockholdersEquity	3,735,946us-gaap_StockholdersEquity
Noncontrolling interest	57,427us-gaap_MinorityInterest	55,134us-gaap_MinorityInterest
Total equity	3,964,390	3,791,080
Liabilities and Equity, Total	$ 9,084,355	$ 8,974,443

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