Long-Term Debt (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Debt Instrument [Line Items]
Total Debt	$ 1,910,807	$ 1,859,809	$ 1,598,963
Less current portion	474,023us-gaap_LongTermDebtCurrent	302,087us-gaap_LongTermDebtCurrent	125,130us-gaap_LongTermDebtCurrent
Long-term debt	1,436,784us-gaap_LongTermDebtNoncurrent	1,557,722us-gaap_LongTermDebtNoncurrent	1,473,833us-gaap_LongTermDebtNoncurrent
Loss on early extinguishment of debt	0	1,474
Bank debt [Member]
Debt Instrument [Line Items]
Total Debt	1,110,807	1,059,809	798,963
5 1/2% Senior Notes [Member]
Debt Instrument [Line Items]
Total Debt	300,000	300,000	300,000
5% Senior Notes [Member]
Debt Instrument [Line Items]
Total Debt	500,000	500,000	500,000
Revolving Loan [Member] \| Bank debt [Member]
Debt Instrument [Line Items]
Total Debt	359,500	182,358	0
Senior Notes [Member] \| Five and One Half Percent Senior Notes due 2022 [Member]
Debt Instrument [Line Items]
Senior note interest rate (percent)	5.50%	5.50%	5.50%
Senior Notes [Member] \| Five Percent Senior Notes due 2020 [Member]
Debt Instrument [Line Items]
Senior note interest rate (percent)	5.00%	5.00%	5.00%
Bank revolving loans and term loans [Member] \| Bank debt [Member]
Debt Instrument [Line Items]
Less current portion	389,600
U S Term Loans [Member] \| Bank debt [Member]
Debt Instrument [Line Items]
Total Debt	365,000	365,000	365,000
Canadian Term Loans [Member] \| Bank debt [Member]
Debt Instrument [Line Items]
Total Debt	52,515	62,734	60,235
Euro Term Loans [Member] \| Bank debt [Member]
Debt Instrument [Line Items]
Total Debt	236,192	304,194	266,156
Other Foreign Bank Revolving And Term Loans [Member] \| Bank debt [Member]
Debt Instrument [Line Items]
Total Debt	97,600	145,523	107,572
Less current portion	$ 84,400

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

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

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+ References

No definition available.

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

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Amount of long-term debt, after unamortized discount or premium, scheduled 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

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 210.5-02.19,20)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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