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v2.4.0.8

Schedule of Debt Outstanding (Parenthetical) (Detail) | 6 Months Ended |
--- | --- | ---
Jun. 30, 2013 | Dec. 31, 2012
Revolving Credit Facility |  |
Debt Instrument [Line Items] |  |
Revolving Credit Facility maturity date | Dec. 31, 2017 |
Weighted average rate | 1.70% | 1.70%
Senior Notes interest payable dates | interest payable periodically at variable interest rates. |
Senior Notes 4.625% Due 2023 |  |
Debt Instrument [Line Items] |  |
Interest rate stated percentage of Senior Notes | 4.625% |
Note maturity date | May 31, 2023 |
Senior Notes interest payable dates | interest payable semi-annually in May and November at 4.625%. |
Senior Notes 4.125% Due 2020 |  |
Debt Instrument [Line Items] |  |
Interest rate stated percentage of Senior Notes | 4.125% |
Note maturity date | Apr. 30, 2020 |
Senior Notes interest payable dates | interest payable semi-annually in April and October at 4.125%. |
Senior Notes 7.75% Due 2017 |  |
Debt Instrument [Line Items] |  |
Interest rate stated percentage of Senior Notes | 7.75% |
Note maturity date | Jun. 30, 2017 |
Senior Notes interest payable dates | interest payable semi-annually in June and December at 7.75%. |

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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 SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: 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 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 SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: 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 Weighted average interest rate of short-term debt outstanding. + 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 210.5-02.19(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Subparagraph b -Article 5 + Details
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