Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

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Borrowings Debt Exchanged (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended
Borrowings Debt Exchanged (Details) - USD ($) $ in Millions	Aug. 31, 2015	Sep. 30, 2015
Omnicare, Inc. [Member]
Debt Instrument [Line Items]
Notes Assumed	$ 3,100
Convertible Debt		$ 9
Repayments of Debt		2,400
Long-term Debt		700
Convertible Debt [Member] \| Omnicare, Inc. [Member]
Debt Instrument [Line Items]
Notes Assumed	2,000
Senior Notes [Member]
Debt Instrument [Line Items]
Aggregate Principal Amount	684
Senior Notes [Member] \| Unsecured Senior Notes 4.750 Percent Due in 2022 [Member]
Debt Instrument [Line Items]
Aggregate Principal Amount	$ 388
Percentage of Total Outstanding Principal Amount Exchanged	96.80%
Senior Notes [Member] \| Unsecured Senior Notes 5.000 Percent Due in 2024 [Member]
Debt Instrument [Line Items]
Aggregate Principal Amount	$ 296
Percentage of Total Outstanding Principal Amount Exchanged	98.80%
Senior Notes [Member] \| Omnicare, Inc. [Member] \| Unsecured Senior Notes 4.750 Percent Due in 2022 [Member]
Debt Instrument [Line Items]
Long-term Debt		400
Senior Notes [Member] \| Omnicare, Inc. [Member] \| Unsecured Senior Notes 5.000 Percent Due in 2024 [Member]
Debt Instrument [Line Items]
Long-term Debt		300
Loans Payable [Member] \| Omnicare, Inc. [Member]
Debt Instrument [Line Items]
Repayments of Debt		$ 400