Debt Instrument, Number of Series Issued

No definition available.

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- Definition

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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Period Type:	instant

- Definition

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

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Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

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Balance Type:	na
Period Type:	instant

- Definition

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.

+ References

No definition available.

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- Definition

Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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- Definition

Interest and debt related expenses associated with nonoperating financing activities of the entity.

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Balance Type:	debit
Period Type:	duration

- Definition

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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- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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Debt and lines of credit - Additional Information (Details)	1 Months Ended	3 Months Ended		9 Months Ended
	Feb. 28, 2021 USD ($)	Sep. 30, 2021 USD ($) seriesOfDebt	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) seriesOfDebt	Sep. 30, 2020 USD ($)
Debt Instrument [Line Items]
Commercial paper		$ 0		$ 0
Retirement of debt				550,000,000	$ 500,000,000
Interest and debt expense		$ 45,000,000	$ 49,000,000	$ 135,000,000	$ 142,000,000
Senior unsecured notes
Debt Instrument [Line Items]
Number of series of debt issued \| seriesOfDebt		3		3
Principal amount		$ 1,500,000,000		$ 1,500,000,000
Debt issuance costs		10,000,000		10,000,000
Notes due 2026 at 1.125%
Debt Instrument [Line Items]
Principal amount		$ 500,000,000		$ 500,000,000
Long-term debt stated interest rate (in percentage)		1.125%		1.125%
Notes due 2031 at 1.90%
Debt Instrument [Line Items]
Principal amount		$ 500,000,000		$ 500,000,000
Long-term debt stated interest rate (in percentage)		1.90%		1.90%
Notes due 2051 at 2.70%
Debt Instrument [Line Items]
Principal amount		$ 500,000,000		$ 500,000,000
Long-term debt stated interest rate (in percentage)		2.70%		2.70%
Notes due 2021 at 2.75%
Debt Instrument [Line Items]
Long-term debt stated interest rate (in percentage)		2.75%		2.75%
Retirement of debt	$ 550,000,000
Revolving credit facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		$ 2,000,000,000		$ 2,000,000,000