Coram Acquisition (Details) (Coram LLC [Member], USD $)	0 Months Ended	6 Months Ended
	Jan. 16, 2014 Patient	Jun. 30, 2014
Business Acquisition [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Business Combination, Consideration Transferred	$ 2,100,000,000
Business Combination, Contingent Consideration, Liability	100,000,000
Net operating loss carryforwards to be paid to seller		60,000,000
Additional payments to seller for remaining net operating losses used		50.00%
Fair Value of Assets Acquired	2,500,000,000
Fair value of liabilities acquired	300,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	200,000,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	500,000,000
Goodwill	1,600,000,000
Business Combination, Acquisition Related Costs		$ 14,000,000
Number of Patients	165,000
Branch location [Member]
Business Acquisition [Line Items]
Number of Locations Acquired	84
Centers of Excellence [Member]
Business Acquisition [Line Items]
Number of Locations Acquired	6
Employee [Member]
Business Acquisition [Line Items]
Entity Number of Employees	4,600
Nurses [Member]
Business Acquisition [Line Items]
Entity Number of Employees	600
Dietitians [Member]
Business Acquisition [Line Items]
Entity Number of Employees	250