Debt Instrument, Redemption Price, Discounted Scheduled Payments, Discount Rate, Basis Spread on Variable Rate

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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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.

+ Details

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Definition

Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph e
-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

+ Details

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- Definition

Amount, after accumulated amortization, of debt discount.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

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-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399

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- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585

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Balance Type:	credit
Period Type:	duration

- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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Debt (Senior Notes) (Narrative) (Details) - USD ($)	1 Months Ended		12 Months Ended
Debt (Senior Notes) (Narrative) (Details) - USD ($)	Jan. 31, 2017	Sep. 30, 2012	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Debt Instrument
Payments of Debt Issuance Costs			$ 21,581,000	$ 0	$ 0
Senior Notes \| 2017 Senior Notes
Debt Instrument
Proceeds from Issuance of Long-term Debt	$ 989,900,000
Debt Instrument, Unamortized Discount	1,600,000		1,600,000
Debt Issuance Costs, Gross	$ 8,500,000		$ 8,500,000
Senior Notes \| 4.95% Senior Notes
Debt Instrument
Debt Instrument, Redemption Price, Discounted Scheduled Payments, Discount Rate, Basis Spread on Variable Rate	0.40%		0.40%
Debt Instrument, Maturity Date	Feb. 15, 2027
Debt Instrument, Face Amount	$ 500,000,000		$ 500,000,000	0
Debt Instrument, Interest Rate, Stated Percentage	4.95%		4.95%
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes \| 3.70% Senior Notes
Debt Instrument
Debt Instrument, Redemption Price, Discounted Scheduled Payments, Discount Rate, Basis Spread on Variable Rate	0.30%		0.30%
Debt Instrument, Maturity Date	Feb. 15, 2022
Debt Instrument, Face Amount	$ 500,000,000		$ 500,000,000	0
Debt Instrument, Interest Rate, Stated Percentage	3.70%		3.70%
Debt Instrument, Redemption Price, Percentage	100.00%
Senior Notes \| 2012 Senior Notes
Debt Instrument
Proceeds from Issuance of Long-term Debt		$ 345,800,000
Debt Instrument, Unamortized Discount		1,300,000
Payments of Debt Issuance Costs		$ 2,900,000
Senior Notes \| 3.75% Senior Notes
Debt Instrument
Debt Instrument, Redemption Price, Discounted Scheduled Payments, Discount Rate, Basis Spread on Variable Rate		0.50%
Debt Instrument, Maturity Date	Sep. 21, 2017
Debt Instrument, Face Amount	$ 350,000,000	$ 350,000,000	$ 350,000,000	$ 350,000,000
Debt Instrument, Interest Rate, Stated Percentage		3.75%
Debt Instrument, Redemption Price, Percentage		100.00%