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Borrowings - Additional Information (Detail) |  |  |  | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 04, 2016 USD ($) shares | Jun. 01, 2015 USD ($) | Jul. 16, 2013 USD ($) | Dec. 31, 2016 USD ($) $ / shares shares | Dec. 31, 2015 USD ($) shares | Dec. 31, 2014 USD ($) shares | May 16, 2016 USD ($) | May 21, 2014 USD ($) | Jun. 13, 2011 USD ($) | Aug. 09, 2010 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  | 3.875% | 3.875% | 3.875% |  |  |  |
Convertible note hedge transactions, purchased call options |  |  |  | $ 88,000,000 |  |  |  |  |  |
Convertible note hedge transactions, net of tax |  |  |  | $ 56,000,000 |  |  |  |  |  |
Conversion of convertible notes, shares issued upon conversion | shares | 2,170,000 |  |  | 1,700,000 | 2,700,000 | 1,900,000 |  |  |  |
Warrants expiration period |  |  |  | 180 days |  |  |  |  |  |
Strike price of warrants (in dollars per share) | $ / shares |  |  |  | $ 74.65 |  |  |  |  |  |
Proceeds from sale of warrants |  |  |  | $ 59,400,000 |  |  |  |  |  |
Convertible debt, fair value |  |  |  | 316,300,000 |  |  |  |  |  |
Initial equity component |  |  |  | 83,700,000 |  |  |  |  |  |
Convertible notes, carrying value, net of tax |  |  |  | 53,300,000 |  |  |  |  |  |
Proceeds from Convertible Debt |  |  |  | 400,000,000 |  |  |  |  |  |
Debt discount |  |  |  | $ 83,700,000 |  |  |  |  |  |
Effective interest rate |  |  |  | 7.814% |  |  |  |  |  |
Shares received from dealer counterparties | shares |  |  |  | 400,000 |  |  |  |  |  |
Ownership percentage of subsidiaries |  |  |  | 50.00% |  |  |  |  |  |
Proceeds from accounts receivable securitization |  | $ 12,100,000 |  |  |  |  |  |  |  |
Settlement and exchange of convertible notes with common or treasury stock |  |  |  | $ 35,286,000 | $ 133,000 | $ 43,000 |  |  |  |
Total long-term debt |  |  |  | 1,033,323,000 | 1,059,200,000 |  |  |  |  |
Reduction in borrowings |  |  |  | 714,565,000 | 303,757,000 | 480,102,000 |  |  |  |
Loss on extinguishment of debt |  |  |  | $ 19,261,000 | 10,454,000 | $ 0 |  |  |  |
Exchange Consideration [Member] | Convertible Debt | Convertible Notes Payable |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Conversion of convertible notes, shares issued upon conversion | shares |  |  |  | 300,000 |  |  |  |  |  |
Extinguishment of debt, amount | $ 219,200,000 |  |  |  |  |  |  |  |  |
Long Term Debt, Repayments Of Principal, Cash Consideration Per Principal Amount | 1,000 |  |  |  |  |  |  |  |  |
Reduction in borrowings | 220,700,000 |  |  |  |  |  |  |  |  |
Repayments of accrued debt interest | 1,500,000 |  |  |  |  |  |  |  |  |
Loss on extinguishment of debt | $ 16,300,000 |  |  |  |  |  |  |  |  |
Hedge Unwind Agreements and Warrant Unwind Agreements | Convertible Debt | Convertible Notes Payable |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Shares received from dealer counterparties | shares | 300,000 |  |  |  |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Conversion of convertible notes, shares issued upon conversion | shares |  |  |  | 7,981,422 |  |  |  |  |  |
Revolving Credit Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Proceeds from long-term lines of credit |  | 246,000,000 |  | $ 265,000,000 | 246,000,000 |  |  |  |  |
Repayments of Lines of Credit |  |  |  | 451,000,000 |  |  |  |  |  |
Standby Letters of Credit |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Line of credit facility amount outstanding |  |  |  | $ 3,200,000 | 3,800,000 |  |  |  |  |
Convertible Senior Subordinated Notes [Member] |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Convertible subordinated debt |  |  |  |  |  |  |  |  |  | $ 400,000,000
Interest rate |  |  |  |  |  |  |  |  |  | 3.875%
Number of trading days |  |  |  | 20 days |  |  |  |  |  |
Number of consecutive trading days |  |  |  | 30 days |  |  |  |  |  |
Percentage of conversion price of applicable trading day |  |  |  | 130.00% |  |  |  |  |  |
Number of business days |  |  |  | 5 days |  |  |  |  |  |
Principal amount of convertible notes |  |  |  | $ 1,000 |  |  |  |  |  |
Percentage of the product of the last reported sale price of the common stock (less than) |  |  |  | 98.00% |  |  |  |  |  |
Convertible notes conversion rate |  |  |  | 16.3084 |  |  |  |  |  |
Conversion price, per share (in dollars per share) | $ / shares |  |  |  | $ 61.32 |  |  |  |  |  |
Conversion of convertible notes, shares issued upon conversion | shares |  |  |  | 400,000 |  |  |  |  |  |
Settlement and exchange of convertible notes with common or treasury stock |  |  |  | $ 44,400,000 | $ 400,000 |  |  |  |  |
Extinguishment of debt, amount |  |  |  | 44,400,000 |  |  |  |  |  |
Loss on extinguishment of debt |  |  |  | $ 3,000,000 |  |  |  |  |  |
Securitization Program |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  | 1.52% | 1.18% |  |  |  |  |
Maximum amount available under receivable securitization |  |  |  | $ 50,000,000 |  |  |  |  |  |
Securitization program, at a rate of 1.52% at December 31, 2016 and 1.18% at December 31, 2015 |  |  |  | $ 50,000,000 | $ 43,300,000 |  |  |  |  |
New Senior Credit Facility | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Maximum amount available for borrowing |  |  | $ 850,000,000 |  |  |  |  |  |  |
Federal funds effective rate plus |  |  | 0.50% |  |  |  |  |  |  |
Prime rate or one month LIBOR plus |  |  | 1.00% |  |  |  |  |  |  |
Senior credit facility interest rate |  |  |  | 2.27% |  |  |  |  |  |
Leverage ratio, required |  |  | 4.0 |  |  |  |  |  |  |
Interest coverage ratio, required |  |  | 3.50 |  |  |  |  |  |  |
Liquidity minimum threshold |  |  | $ 400,000,000 |  |  |  |  |  |  |
Leverage ratio |  |  |  | 2.00 |  |  |  |  |  |
Interest coverage ratio |  |  |  | 11.22 |  |  |  |  |  |
New Senior Credit Facility | Line of Credit | Revolving Credit Facility | Prime Rate | Minimum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Applicable margin |  |  | 0.25% |  |  |  |  |  |  |
New Senior Credit Facility | Line of Credit | Revolving Credit Facility | Prime Rate | Maximum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Applicable margin |  |  | 1.00% |  |  |  |  |  |  |
New Senior Credit Facility | Line of Credit | Revolving Credit Facility | LIBOR |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Senior credit facility interest rate |  |  |  | 0.77% |  |  |  |  |  |
New Senior Credit Facility | Line of Credit | Revolving Credit Facility | LIBOR | Minimum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Applicable margin |  |  | 1.25% |  |  |  |  |  |  |
New Senior Credit Facility | Line of Credit | Revolving Credit Facility | LIBOR | Maximum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Applicable margin |  |  | 2.00% |  |  |  |  |  |  |
New Senior Credit Facility | Line of Credit | Revolving Credit Facility | Rate Spread |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Senior credit facility interest rate |  |  |  | 1.50% |  |  |  |  |  |
5.25% Senior Notes due 2024 | Senior Notes |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  | 5.25% | 5.25% |  |  | 5.25% |  |
Senior notes |  |  |  | $ 250,000,000 | $ 250,000,000 |  |  | $ 250,000,000 |  |
Ownership percentage of subsidiaries |  |  |  | 100.00% |  |  |  |  |  |
Basis spread on variable rate |  |  |  | 0.50% |  |  |  |  |  |
5.25% Senior Notes due 2024 | Senior Notes | Minimum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Declining percent of redemption price to principal amount |  |  |  | 0.875% |  |  |  |  |  |
5.25% Senior Notes due 2024 | Senior Notes | Maximum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent of redemption price to principal amount |  |  |  | 102.625% |  |  |  |  |  |
Declining percent of redemption price to principal amount |  |  |  | 100.00% |  |  |  |  |  |
5.25% Senior Notes due 2024 | Senior Notes | Debt Instrument Redemption Prior To June 15, 2019 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent of redemption price to principal amount on redemption |  |  |  | 100.00% |  |  |  |  |  |
Make whole premium as percentage of principal amount of notes subject to redemption |  |  |  | 1.00% |  |  |  |  |  |
5.25% Senior Notes due 2024 | Senior Notes | Debt Instrument Redemption Prior To June 15 2017 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent of redemption price to principal amount on redemption |  |  |  | 105.25% |  |  |  |  |  |
Percent of principal amount of notes redeemable |  |  |  | 35.00% |  |  |  |  |  |
4.875% Senior Notes due 2026 | Senior Notes |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  | 4.875% |  |  |
Senior notes |  |  |  | $ 400,000,000 | $ 0 |  | $ 400,000,000 |  |  |
Basis spread on variable rate |  |  |  | 0.50% |  |  |  |  |  |
Fee amount |  |  |  |  |  |  | $ 6,500,000 |  |  |
4.875% Senior Notes due 2026 | Senior Notes | Minimum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Declining percent of redemption price to principal amount |  |  |  | 0.813% |  |  |  |  |  |
4.875% Senior Notes due 2026 | Senior Notes | Maximum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent of redemption price to principal amount |  |  |  | 102.438% |  |  |  |  |  |
Declining percent of redemption price to principal amount |  |  |  | 100.00% |  |  |  |  |  |
4.875% Senior Notes due 2026 | Senior Notes | Debt Instrument Redemption Prior To June 1, 2021 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent of redemption price to principal amount on redemption |  |  |  | 100.00% |  |  |  |  |  |
Make whole premium as percentage of principal amount of notes subject to redemption |  |  |  | 1.00% |  |  |  |  |  |
4.875% Senior Notes due 2026 | Senior Notes | Debt Instrument Redemption Prior To June 1, 2019 |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Percent of redemption price to principal amount on redemption |  |  |  | 104.875% |  |  |  |  |  |
Percent of principal amount of notes redeemable |  |  |  | 40.00% |  |  |  |  |  |
6.875% Senior Subordinated Notes Due 2019 | Senior Notes |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  | 4.875% | 4.875% |  |  |  | 6.875% |
Senior subordinated notes |  |  |  |  |  |  |  |  | $ 250,000,000 |
Prepayment of debt, make-whole amount |  | $ 8,600,000 |  |  |  |  |  |  |  |
Write off of deferred debt issuance cost |  |  |  |  | $ 1,900,000 |  |  |  |  |

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- Definition Exercise price of the warrants. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column A + Details
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- Definition The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 + Details
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- Definition The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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- Definition The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031897-161870 + Details
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- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870 + Details
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- Definition Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Conversion Rate -URI http://asc.fasb.org/extlink&oid=6509012 Reference 3: 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)(5)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644 + Details
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- Definition Amount of the fee that accompanies borrowing money under the debt instrument. + 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(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + 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 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 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 The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the 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)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition 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. + 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),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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