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

No definition available.

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ 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))
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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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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

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-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

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Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ 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

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 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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-Paragraph 1
-Subparagraph (SX 210.5-02.17)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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- Definition

Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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Long-Term Debt (Detail) - USD ($)	3 Months Ended
Long-Term Debt (Detail) - USD ($)	Mar. 31, 2017	Dec. 31, 2016	Aug. 31, 2016	Mar. 31, 2016
Debt Instrument [Line Items]
Long-term debt	$ 2,150,000,000	$ 2,150,000,000		$ 2,100,000,000
Debt issuance costs	(15,018,000)	(15,729,000)		(14,573,000)
Long-term Debt	2,134,982,000	2,134,271,000		2,085,427,000
Less: current portion, net	(250,000,000)	0		(300,000,000)
Long-term debt	1,884,982,000	2,134,271,000		1,785,427,000
2010 Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	500,000,000	500,000,000		500,000,000
2011 Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	300,000,000	300,000,000		600,000,000
2013 Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	500,000,000	500,000,000		500,000,000
2014 Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	500,000,000	500,000,000		500,000,000
2016 Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 350,000,000	$ 350,000,000		$ 0
Debt instrument, face amount			$ 350,000,000.0
Debt instrument, stated interest rate			2.35%
Prior to Par Call Date \| 2016 Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	100.00%
Interest rate margin for loans	20.00%
Subsequent to Par Call Date \| 2016 Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Debt instrument, redemption price, percentage	100.00%