Cash collateral for insurance obligations.

No definition available.

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- Definition

Debt Instrument, Face Amount, Number Of Tenors

+ References

No definition available.

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- Definition

Line Of Credit, Accordion Feature, Increase Limit

+ References

No definition available.

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- Definition

Line Of Credit Facility, Renewal Options

+ References

No definition available.

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- Definition

Line Of Credit Facility, Renewal Term

+ References

No definition available.

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- Definition

Number Of Series Notes

+ References

No definition available.

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- Definition

Sublimit for issuance of standby letters of credit

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No definition available.

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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.

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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
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-Name Accounting Standards Codification
-Topic 835
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- 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

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- Definition

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

+ References

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- 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

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

+ References

No definition available.

+ Details

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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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- 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

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- Definition

Gross amount of debt extinguished.

+ References

No definition available.

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- Definition

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

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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-SubTopic 10
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-Subparagraph (b)
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- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

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- 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.

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- Definition

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.

+ References

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- Definition

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

+ References

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- 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

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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 14
-Subparagraph (b)
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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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-Section S99
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-Subparagraph (SX 210.4-08.(f))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690

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- 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.

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Debt (Narrative) (Details)		1 Months Ended				12 Months Ended
Debt (Narrative) (Details)	Dec. 13, 2018 USD ($)	Oct. 31, 2020 USD ($) renewal_option	Apr. 30, 2020 USD ($) renewal_option	Mar. 31, 2020 USD ($)	Jul. 31, 2019 USD ($) renewal_option	Jan. 30, 2021 USD ($) note	Feb. 01, 2020 USD ($) note	Feb. 02, 2019 USD ($)	May 31, 2020 USD ($)	Jun. 30, 2019 USD ($)
Debt Instrument [Line Items]
Loss on early extinguishment of debt						$ 239,953,000	$ 0	$ 0
Collateral trust						56,100,000	56,000,000.0
Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount of unsecured senior notes		$ 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
Unamortized discount and debt issuance costs						$ 26,900,000	$ 2,100,000
Number of series notes \| note						8	2
Senior Notes \| Level 1
Debt Instrument [Line Items]
Unsecured senior notes estimated fair value						$ 2,800,000,000	$ 335,000,000
Unsecured Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity for revolving credit facility (up to)					$ 800,000,000				$ 800,000,000	$ 600,000,000
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
Amount borrowed from revolving credit facility				$ 800,000,000
Interest rate, margin in addition to LIBOR (percent)				0.875%
Current interest rate for revolving credit facility borrowings (percent)				1.76%
Repayment of revolving credit facility		800,000,000
Amount outstanding under the revolving credit facility						0
Current borrowing capacity						800,000,000
Standby Letters of Credit
Debt Instrument [Line Items]
Amount outstanding under the revolving credit facility						0
Letters of credit, outstanding						15,300,000	4,200,000
Senior Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity for revolving credit facility (up to)									$ 500,000,000
Amount outstanding under the revolving credit facility		0
Trade Letters of Credit
Debt Instrument [Line Items]
Letters of credit, outstanding						16,300,000	$ 11,200,000
6.53% Series B Senior Notes due 2021 \| Series B Unsecured Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount of unsecured senior notes						$ 65,000,000
Unsecured senior notes interest rate (percent)						6.53%
3.375% Senior Notes due 2024 \| Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount of unsecured senior notes						$ 250,000,000
Unsecured senior notes interest rate (percent)						3.375%
6.38% Series A Senior Notes \| Series A Unsecured Senior Notes
Debt Instrument [Line Items]
Unsecured senior notes interest rate (percent)	6.38%
Extinguishment of debt	$ 85,000,000
4.600% Senior Notes due 2025 \| Senior Notes
Debt Instrument [Line Items]
Aggregate principal amount of unsecured senior notes			$ 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]
Aggregate principal amount of unsecured senior notes			$ 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]
Aggregate principal amount of unsecured senior notes			$ 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]
Aggregate principal amount of unsecured senior notes			$ 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]
Aggregate principal amount of unsecured senior notes		$ 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]
Aggregate principal amount of unsecured senior notes		$ 500,000,000
Unsecured senior notes interest rate (percent)		1.875%				1.875%