Derivative Instruments and Hedging Activities - Additional Information (Detail)	3 Months Ended		12 Months Ended
	Dec. 31, 2015 USD ($) lb	Dec. 31, 2014 USD ($)	Sep. 30, 2015 USD ($) lb
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Reclassification of terminated interest rate swaps to interest expense within the next 12 months	$ 6,000,000
Forward exchange contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	1,300,000,000		$ 2,200,000,000
Interest rate swaps | Cash Flow Hedges
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	0		0
Interest rate swaps | Cash Flow Hedges | CareFusion
Derivative Instruments and Hedging Activities Disclosures [Line Items]
After-tax loss recognized in other comprehensive income (loss)		$ (8,000,000)
Fixed to Floating
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 375,000,000		375,000,000
Debt instrument, interest rate	3.125%
(Loss) gain recorded on fair value hedges	$ 13,000,000	$ 10,000,000
Commodity forward contracts
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount	$ 19,000,000		$ 25,000,000
Total notional volume (pounds) | lb	37,000,000		49,000,000