Financial Instruments and Fair Value Measurements - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Jun. 30, 2016	Dec. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Remaining cash equivalents	$ 1,317,000,000	$ 1,277,000,000	$ 1,317,000,000	$ 1,277,000,000
Fair value of long-term debt	11,300,000,000	11,600,000,000	11,300,000,000	11,600,000,000
Fair value of debt classified from long term to short term	798,000,000	750,000,000	798,000,000	750,000,000
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability			(25,000,000)
Transfer of assets in and out of level 1, 2 and 3 measurements during the period			0	0
Transfer of liabilities in and out of level 1, 2 and 3 measurements during the period			0	0
Capitalized Computer Software, Impairments	$ 214,000,000		$ 214,000,000
Asset Impairment Charges		72,000,000
Notes Due 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument, face amount						$ 500,000,000
Interest rate	1.75%		1.75%			1.75%
1.450% Notes due May 15, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument, face amount					$ 300,000,000
Interest rate	1.45%		1.45%		1.45%
Notes Due June 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt instrument, face amount		$ 750,000,000		$ 750,000,000
Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Maturity period of short-term investments at the time of purchase			3 months
Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Maturity period of short-term investments at the time of purchase			1 year
Respiratory Solutions | Disposal Group, Held-for-sale, Not Discontinued Operations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (Loss) on Disposition of Business	$ (81,000,000)		$ (81,000,000)