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Additional funding available, subject to additional commitments made by lenders, under Company's syndicated credit facility.

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Principal Amount Outstanding After Exchange

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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Fair value amount of debt instrument that was repurchased.

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Face (par) amount of the original debt instrument that was repurchased.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The difference between the reacquisition price and the net carrying amount of the extinguished debt recognized currently as a component of income in the period of extinguishment, net of tax.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of long-term unsecured obligations issued by corporations and other borrowers to investors (with maturities initially due after one year or beyond the operating cycle if longer).

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Weighted average interest rate of short-term debt outstanding calculated at point in time.

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Debt - Additional Information (Detail) € in Millions, £ in Millions	1 Months Ended	3 Months Ended						12 Months Ended
	Jan. 31, 2018	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Jun. 30, 2017	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2019 EUR (€)	Jun. 30, 2018 EUR (€)	Jun. 30, 2018 GBP (£)	Mar. 31, 2018 EUR (€)	Dec. 29, 2017 USD ($)
Debt Instrument [Line Items]
Short-term debt, weighted average interest rate		2.48%						2.48%	1.58%
Aggregate annual maturities of long-term debt, 2020		$ 1,900,000,000						$ 1,900,000,000
Aggregate annual maturities of long-term debt, 2021		2,600,000,000						2,600,000,000
Aggregate annual maturities of long-term debt, 2022		3,700,000,000						3,700,000,000
Aggregate annual maturities of long-term debt, 2023		2,900,000,000						2,900,000,000
Aggregate annual maturities of long-term debt, 2024		2,300,000,000						2,300,000,000
Letters Of Credit Issuable Under Credit Facility		100,000,000						100,000,000
Line Of Credit Facility Maximum Additional Principal Amount Commitments		500,000,000						500,000,000
Line of Credit Facility, Maximum Borrowing Capacity		2,750,000,000						2,750,000,000
Long-term Commercial Paper		0						0
Debt Instrument, Repurchased Face Amount			$ 1,100,000,000		$ 539,000,000	$ 461,000,000
Long-Term Debt		18,081,000,000						18,081,000,000	$ 18,894,000,000
Debt Instrument, Repurchase Amount			1,169,000,000		559,000,000	465,000,000
Extinguishment of Debt, Gain (Loss), Net of Tax			$ 57,000,000		3,000,000	13,000,000		59,000,000	16,000,000	$ 73,000,000
0.174% Notes due June 4, 2021
Debt Instrument [Line Items]
Long-Term Debt		$ 651,000,000						$ 651,000,000	0
Interest rate		0.174%	0.174%					0.174%			0.174%
0.632% Notes due June 4, 2023
Debt Instrument [Line Items]
Long-Term Debt		$ 867,000,000						$ 867,000,000	0
Interest rate		0.632%	0.632%					0.632%			0.632%
1.208% Notes due June 4, 2026
Debt Instrument [Line Items]
Long-Term Debt		$ 649,000,000						$ 649,000,000	0
Interest rate		1.208%	1.208%					1.208%			1.208%
Notes 0.368% due June 6, 2019
Debt Instrument [Line Items]
Interest rate			0.368%								0.368%
2.675% Notes due December 15, 2019
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount		$ 825,000,000						$ 825,000,000
Long-Term Debt		0						0	1,123,000,000
Debt Instrument, Repurchase Amount		826,000,000						$ 826,000,000
Extinguishment of Debt, Gain (Loss), Net of Tax		$ 1,000,000
Interest rate		2.675%						2.675%
Notes 3.000% due May 15, 2026
Debt Instrument [Line Items]
Long-Term Debt						452,000,000
0.368% Notes due June 6, 2019
Debt Instrument [Line Items]
Debt instrument, face amount						$ 370,000,000								€ 300
Interest rate		0.368%				0.368%		0.368%						0.368%
Floating Rate Notes due December 29, 2020
Debt Instrument [Line Items]
Long-Term Debt		$ 748,000,000						$ 748,000,000	996,000,000
Debt instrument, face amount						$ 1,000,000,000
Notes 4.400% due January 15, 2021 and notes 3.000% due May 15, 2026
Debt Instrument [Line Items]
Long-Term Debt					556,000,000
1.401% Notes due May 24, 2023
Debt Instrument [Line Items]
Long-Term Debt		$ 325,000,000						$ 325,000,000	346,000,000
Debt instrument, face amount					$ 354,000,000							€ 300
Interest rate		1.401%			1.401%			1.401%				1.401%	1.401%
3.020% Notes due May 24, 2025
Debt Instrument [Line Items]
Long-Term Debt		$ 306,000,000						$ 306,000,000	324,000,000
Debt instrument, face amount					$ 337,500,000								£ 250
Interest rate		3.02%			3.02%			3.02%				3.02%	3.02%
Revolving Credit Facility
Debt Instrument [Line Items]
Debt Instrument, Term							5 years
Maximum borrowing capacity of syndicated credit facility		$ 2,250,000,000						$ 2,250,000,000
Borrowings under credit facility		$ 485,000,000						$ 485,000,000	$ 0
Term Loan Facility
Debt Instrument [Line Items]
Debt Instrument, Term		364 days
Senior Notes \| Floating Rate Notes Due December 29, 2020
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount				$ 250,000,000
Long-Term Debt				249,000,000
Debt Instrument, Repurchase Amount				250,000,000
Extinguishment of Debt, Gain (Loss), Net of Tax				$ 1,000,000
Exchanged Notes \| Notes 3.000% due May 15, 2026
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage	101.00%
CR Bard Inc \| Exchanged Notes
Debt Instrument [Line Items]
Long-Term Debt															$ 1,150,000,000
Principal Amount Outstanding After Exchange															111,000,000
CR Bard Inc \| Exchanged Notes \| Notes 3.000% due May 15, 2026
Debt Instrument [Line Items]
Long-Term Debt															500,000,000
Interest rate		3.00%			3.00%	3.00%		3.00%				3.00%	3.00%	3.00%
CR Bard Inc \| Exchanged Notes \| Notes 4.400% due January 15, 2021
Debt Instrument [Line Items]
Long-Term Debt															$ 500,000,000
Interest rate		4.40%			4.40%			4.40%				4.40%	4.40%
Euro Member Countries, Euro \| 0.174% Notes due June 4, 2021
Debt Instrument [Line Items]
Debt instrument, face amount \| €											€ 600
Euro Member Countries, Euro \| 0.632% Notes due June 4, 2023
Debt Instrument [Line Items]
Debt instrument, face amount \| €											800
Euro Member Countries, Euro \| 1.208% Notes due June 4, 2026
Debt Instrument [Line Items]
Debt instrument, face amount \| €											600
Euro Member Countries, Euro \| Notes 0.368% due June 6, 2019
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount \| €											€ 1,000
United States of America, Dollars \| 0.174% Notes due June 4, 2021
Debt Instrument [Line Items]
Debt instrument, face amount			$ 672,000,000
United States of America, Dollars \| 0.632% Notes due June 4, 2023
Debt Instrument [Line Items]
Debt instrument, face amount			896,000,000
United States of America, Dollars \| 1.208% Notes due June 4, 2026
Debt Instrument [Line Items]
Debt instrument, face amount			672,000,000
United States of America, Dollars \| Notes 0.368% due June 6, 2019
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount			1,120,000,000
Long-term Debt
Debt Instrument [Line Items]
Long-Term Debt			$ 1,112,000,000
Short-term Debt \| 2.675% Notes due December 15, 2019
Debt Instrument [Line Items]
Long-Term Debt		$ 825,000,000						$ 825,000,000