Stockholders' Equity (Details) - USD ($)		1 Months Ended	3 Months Ended
	Jan. 07, 2015	Jan. 28, 2016	Jan. 31, 2016	Jan. 31, 2015
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common Stock, Shares, Outstanding, Beginning Balance			80,883,000
Common Stock, Value, Issued, Beginning Balance			$ 721,419,000
Issued to participants in the Employee Stock Purchase Plan (ESPP) (in shares)			6,000
Issued to participants in the Employee Stock Purchase Plan (ESPP)			$ 342,000
Issued to participants in the Dividend Reinvestment and Stock Purchase Plan (in shares)			77,000
Issued to participants in the Dividend Reinvestment and Stock Purchase Plan			$ 4,260,000
Issued to participants in the Incentive Compensation Plan (ICP) (in shares)			106,000
Issued to participants in the ICP			$ 6,056,000
Costs from issuance of common stock			$ (21,000)	$ (137,000)
Common Stock, Shares, Outstanding, Ending Balance			81,072,000
Common Stock, Value, Issued, Ending Balance			$ 732,056,000
ATM Sales Agreement Aggregate Amount	$ 170,000,000
ATM Sales Agreement Commission Percentage			1.50%
Cash dividends paid per share of common stock (usd per share)			$ 0.33	$ 0.32
Forward Contract Indexed to Issuer's Equity [Line Items]
Forward Contract Indexed to Issuer's Equity, Shares		360,000
Forward Contract Indexed to Issuer's Equity, Forward Rate Per Share		$ 57.90
Initial Forward Price Per Share		$ 57.04
Forward Contract Indexed to Issuer's Equity, Settlement Alternatives			Under the terms of this FSA, at our election, we may physically settle in shares, cash or net settle for all or a portion of our obligation under the agreement.
Forward Contract Indexed to Issuer's Equity, Classification			we have classified the FSA as an equity transaction because the FSA is indexed to our own stock and physical settlement is within our control
Forward Contract Amount Recorded in Consolidated Financial Statements			$ 0
Forward Contract Indexed to Issuer's Equity, Indexed Shares			360,000
Forward Contract Indexed to Issuer's Equity, Settlement Alternatives, Cash, at Fair Value			$ 20,500,000
Net Settlement Price Per Share			$ 57.03
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income from equity method investments			$ (9,202,000)	$ (8,265,000)
Income taxes			3,378,000	3,264,000
Net income			(97,790,000)	(92,978,000)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Accumulated OCIL beginning balance, net of tax			(855,000)	(237,000)
Total other comprehensive income (loss)			368,000	(827,000)
Accumulated OCIL ending balance, net of tax			(487,000)	(1,064,000)
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net income			$ 506,000	117,000
Maximum
Forward Contract Indexed to Issuer's Equity [Line Items]
Forward Contract Indexed to Issuer's Equity, Settlement Date			Oct. 31, 2016
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
OCIL before reclassifications, net of tax			$ (138,000)	(944,000)
Amounts reclassified from accumulated OCIL, net of tax			505,000	117,000
Total other comprehensive income (loss)			367,000	(827,000)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income from equity method investments			832,000	192,000
Income taxes			(327,000)	(75,000)
Net income			505,000	117,000
Accumulated Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Total other comprehensive income (loss)			1,000	0
Accumulated Defined Benefit Plans Adjustment | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income from equity method investments			2,000	0
Income taxes			(1,000)	0
Net income			$ 1,000	$ 0