ACCOUNTS RECEIVABLE AND ALLOWANCE FOR DOUBTFUL ACCOUNTS (Details 2) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable
Allowance for doubtful accounts as a percent of patients accounts receivable			25.50%		23.20%
Self-Pay Patients
Accounts, Notes, Loans and Financing Receivable
Allowance for doubtful accounts as a percent of patients accounts receivable			76.50%		75.90%
Estimated costs of caring	$ 167	$ 122	$ 353	$ 226
Managed Care Patients
Accounts, Notes, Loans and Financing Receivable
Allowance for doubtful accounts as a percent of patients accounts receivable			5.70%		5.60%
Charity Care Patients
Accounts, Notes, Loans and Financing Receivable
Estimated costs of caring	55	31	95	63
Disproportionate Share Hospital
Accounts, Notes, Loans and Financing Receivable
Estimated costs of caring	$ 157	$ 119	$ 311	$ 186