Debt Instrument, Face Amount, Number Of Tenors

No definition available.

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- Definition

Line Of Credit, Accordion Feature, Increase Limit

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Line Of Credit Facility, Renewal Options

+ References

No definition available.

+ Details

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- Definition

Line Of Credit Facility, Renewal Term

+ References

No definition available.

+ Details

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- Definition

Number Of Series Notes

+ References

No definition available.

+ Details

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- Definition

Sublimit for issuance of standby letters of credit

+ References

No definition available.

+ Details

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Balance Type:	credit
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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
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.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(2)
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The cash outflow for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Balance Type:	credit
Period Type:	duration

- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

- Definition

The effective interest rate at the end of the reporting period.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3255-108585

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Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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+ Details

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Period Type:	instant

- Details

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- Details

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- Details

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- Details

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Debt (Narrative) (Details)	1 Months Ended
Debt (Narrative) (Details)	Oct. 31, 2020 USD ($) renewal_option	Apr. 30, 2020 USD ($) renewal_option	Mar. 31, 2020 USD ($)	Jul. 31, 2019 USD ($) renewal_option	May 01, 2021 USD ($) note	Jan. 30, 2021 USD ($) note	May 31, 2020 USD ($)	May 02, 2020 USD ($) note
Debt Instrument [Line Items]
Short-term debt					$ 0	$ 0		$ 805,000,000
$800 million revolving credit facility
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 800,000,000	800,000,000		$ 800,000,000
Sublimit for issuance of standby letters of credit				300,000,000
Option to increase credit facility, additional amount (up to)				$ 300,000,000
Number of renewal options \| renewal_option				2
Renewal option, term				1 year
Proceeds from borrowings			$ 800,000,000
Basis points margin over LIBOR (percent)			0.875%
Interest rate (percent)			1.76%
Repayment of revolving credit facility	$ 800,000,000
Amount outstanding under the revolving credit facility					0
Standby Letters of Credit
Debt Instrument [Line Items]
Amount outstanding under the revolving credit facility					0
Senior Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity							$ 500,000,000
Short-term debt	0
Senior Notes
Debt Instrument [Line Items]
Debt instrument	$ 1,000,000,000.0	$ 2,000,000,000.0
Number of tenors \| renewal_option	2	4
Proceeds from debt issuance, net of discounts and other issuance costs	$ 987,200,000	$ 1,973,000,000
Cash tender offer, principal amount, accepted for purchase	775,000,000
Payment for cash tender offer, principal amount	1,003,000,000.000
Loss on early extinguishment of debt	240,000,000
Total unamortized discount and debt issuance costs					$ 25,800,000	$ 26,900,000		$ 29,400,000
Number of series notes \| note					8	8		6
Senior Notes \| Level 1
Debt Instrument [Line Items]
Unsecured senior notes estimated fair value					$ 2,700,000,000	$ 2,800,000,000		$ 2,500,000,000
6.530% Series B Senior Notes due 2021 \| 6.530% Series B Senior Notes due 2021
Debt Instrument [Line Items]
Debt instrument					$ 65,000,000
Unsecured senior notes interest rate (percent)					6.53%
3.375% Senior Notes due 2024 \| Senior Notes
Debt Instrument [Line Items]
Debt instrument					$ 250,000,000
Unsecured senior notes interest rate (percent)					3.375%
4.600% Senior Notes due 2025 \| Senior Notes
Debt Instrument [Line Items]
Debt instrument		$ 700,000,000
Unsecured senior notes interest rate (percent)		4.60%			4.60%
4.700% Senior Notes due 2027 \| Senior Notes
Debt Instrument [Line Items]
Debt instrument		$ 400,000,000
Unsecured senior notes interest rate (percent)		4.70%			4.70%
Cash tender offer, principal amount, accepted for purchase	158,000,000
4.800% Senior Notes due 2030 \| Senior Notes
Debt Instrument [Line Items]
Debt instrument		$ 400,000,000
Unsecured senior notes interest rate (percent)		4.80%			4.80%
Cash tender offer, principal amount, accepted for purchase	266,000,000
5.450% Senior Notes due 2050 \| Senior Notes
Debt Instrument [Line Items]
Debt instrument		$ 500,000,000
Unsecured senior notes interest rate (percent)		5.45%			5.45%
Cash tender offer, principal amount, accepted for purchase	351,000,000
0.875% Senior Notes due 2026 \| Senior Notes
Debt Instrument [Line Items]
Debt instrument	$ 500,000,000
Unsecured senior notes interest rate (percent)	0.875%				0.875%
1.875% Senior Notes due 2031 \| Senior Notes
Debt Instrument [Line Items]
Debt instrument	$ 500,000,000
Unsecured senior notes interest rate (percent)	1.875%				1.875%