Goodwill and Other Intangible Assets (Goodwill Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Jun. 30, 2014
Goodwill [Line Items]
Goodwill	$ 4,424,000,000	$ 8,519,000,000
Goodwill, Impairment Loss	0
Hospital operations [Member]
Goodwill [Line Items]
Goodwill		8,400,000,000
Home Care Agency Operations Reporting Unit [Member]
Goodwill [Line Items]
Goodwill		44,000,000
Hospital Management Services Reporting Unit [Member]
Goodwill [Line Items]
Goodwill		$ 33,000,000