Based on the provision of the credit agreement, the amount of the Company's limit to pay dividends.

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Based upon the minimum tangible net worth requirement, as defined by the credit facility, the amount of the Company's ability to repurchase its common stock.

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The number of additional common shares that would be issued convertible debt was exchanged into common shares.

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debt instrument, convertible, number of shares issued per $1,000 of notes exchanged.

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The Company's leverage ratio as of the balance sheet date.

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The maximum leverage ratio (as defined) to maintain compliance with the line of credit.

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Maximum borrowing capacity for unsecured long-term debt

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Percentage of holding in subsidiary.

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The denomination for which the senior debt is based upon.

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Senior note payable.

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No definition available.

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Tangible net worth, as defined by the debt instrument.

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No definition available.

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The price per share of the conversion feature embedded in the debt instrument.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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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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No definition available.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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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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Date the debt instrument was repurchased, in CCYY-MM-DD format.

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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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The lowest amount of net worth (total assets minus total liabilities) required by secondary market investors or state-imposed regulatory mandates.

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The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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

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The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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Carrying value as of the balance sheet date of uncollateralized debt obligation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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Loans Payable, Senior Notes, and Mortgage Company Loan Facility Senior Notes (Details Textual 3) - USD ($)	1 Months Ended		3 Months Ended		12 Months Ended
	Nov. 30, 2018	Sep. 30, 2012	Oct. 31, 2019	Jan. 31, 2018	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017	Nov. 02, 2018	Sep. 15, 2017	Sep. 05, 2012
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			$ 1,628,150,000		$ 1,628,150,000
Senior Note Payable (Textual) [Abstract]
Percentage of Holding In Subsidiary			100.00%		100.00%
Issued Senior Notes			$ 2,659,898,000		$ 2,659,898,000	$ 2,861,375,000
Repayments of Senior Debt					$ 600,000,000		$ 687,500,000
Senior unsecured term loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	Nov. 01, 2023				Nov. 01, 2024
Maximum borrowing capacity for unsecured long-term debt			1,000,000,000.0		$ 1,000,000,000.0
Maximum Permissible Leverage Ratio					175.00%
Unsecured Long-term Debt, Noncurrent			800,000,000		$ 800,000,000	500,000,000		$ 500,000,000.0
Minimum Net Worth Required for Compliance			2,700,000,000		$ 2,700,000,000
Existing Leverage Ratio					0.50
Tangible Net Worth			5,020,000,000.00		$ 5,020,000,000.00
Ability to repurchase common stock			$ 3,530,000,000		$ 3,530,000,000
Senior Note Payable (Textual) [Abstract]
Debt Instrument, Interest Rate, Effective Percentage			3.11%		3.11%
Ability to pay dividends			$ 2,320,000,000		$ 2,320,000,000
6.75% Senior Notes due 2019 [Member]
Senior Note Payable (Textual) [Abstract]
Interest rate on notes			6.75%		6.75%
Issued Senior Notes			$ 0		$ 0	250,000,000
Repayments of Senior Debt					$ 250,000,000.0
3.80% Senior Notes Due 2029 [Member]
Senior Note Payable (Textual) [Abstract]
Interest rate on notes			3.80%		3.80%
Issued Senior Notes			$ 400,000,000		$ 400,000,000	0
Proceeds from Debt, Net of Issuance Costs			$ 396,400,000
4.0% Senior Notes due 2018 [Member]
Senior Note Payable (Textual) [Abstract]
Interest rate on notes			4.00%	4.00%	4.00%
Issued Senior Notes			$ 0		$ 0	350,000,000
Repayments of Senior Debt				$ 350,000,000.0
4.350% Senior Notes Due 2028 [Member]
Senior Note Payable (Textual) [Abstract]
Interest rate on notes			4.35%	4.35%	4.35%
Issued Senior Notes			$ 400,000,000	$ 400,000,000.0	$ 400,000,000	400,000,000
Proceeds from Debt, Net of Issuance Costs				$ 396,400,000
0.5% Exchangeable Senior Notes Due 2032 [Member]
Senior Note Payable (Textual) [Abstract]
Interest rate on notes									0.50%
Debt Instrument, Redemption Price, Percentage							100.00%
Debt Instrument, Repurchase Date							Sep. 15, 2017
Debt Instrument, Repurchase Amount									$ 287,500,000
Debt Conversion, Convertible, number of shares issued per note exchanged		20.3749
PrincipalAmountDenomination										$ 1,000
Debt Instrument, Convertible, Conversion Price										$ 49.08
Additional common share if convertible debt exchanged			5,900,000
4.875% Senior Notes Due 2027 [Member]
Senior Note Payable (Textual) [Abstract]
Interest rate on notes			4.875%		4.875%
Issued Senior Notes			$ 450,000,000		$ 450,000,000	450,000,000
4.875% Senior Notes Due 2025 [Member]
Senior Note Payable (Textual) [Abstract]
Interest rate on notes			4.875%		4.875%
Issued Senior Notes			$ 350,000,000		$ 350,000,000	350,000,000
Guarantor Subsidiaries [Member]
Senior Note Payable (Textual) [Abstract]
Noncontrolling Interest, Ownership Percentage by Parent			100.00%		100.00%
Issued Senior Notes
Repayments of Senior Debt