GOODWILL AND INTANGIBLE ASSETS Goodwill by operating and reportable segment (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule of Goodwill by Operating and Reportable Segment [Line Items]
Goodwill	$ 605,121	$ 350,810	$ 312,387
Goodwill, Acquired During Period	254,304	38,423
Goodwill, Other Changes	7
Infusion Services
Schedule of Goodwill by Operating and Reportable Segment [Line Items]
Goodwill	558,593	304,282	265,859
Goodwill, Acquired During Period	254,304	38,423
Goodwill, Other Changes	7
Home Health Services
Schedule of Goodwill by Operating and Reportable Segment [Line Items]
Goodwill	33,784	33,784	33,784
Goodwill, Acquired During Period	0
Goodwill, Other Changes	0
PBM Services
Schedule of Goodwill by Operating and Reportable Segment [Line Items]
Goodwill	12,744	12,744	12,744
Goodwill, Acquired During Period	0
Goodwill, Other Changes	$ 0