Guarantor Subsidiaries Condensed Statement of Cash Flows (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Condensed Financial Statements Captions [Line Items]
Net cash (used for) provided by operating activities	$ 32,040	$ 981
Net cash used for investing activities	(120,801)	(10,098)
Net cash provided by (used for) financing activities	100,167	(9,724)
Effect of changes in currency exchange rates	(1,834)	2,530
Increase (decrease) in cash	9,572	(16,311)
Cash, beginning of year	215,766	285,615
Cash, end of period	225,338	269,304
Parent Company
Condensed Financial Statements Captions [Line Items]
Net cash (used for) provided by operating activities	(69,250)	(1,309)
Net cash used for investing activities	(1,484)	(2,873)
Net cash provided by (used for) financing activities	100,495	(9,725)
Increase (decrease) in cash	29,761	(13,907)
Cash, beginning of year	22,335	75,621
Cash, end of period	52,096	61,714
Guarantor Subsidiaries
Condensed Financial Statements Captions [Line Items]
Net cash (used for) provided by operating activities	123,428	107,900
Net cash used for investing activities	(4,912)	(5,007)
Net cash provided by (used for) financing activities	(120,962)	(110,773)
Increase (decrease) in cash	(2,446)	(7,880)
Cash, beginning of year	5,473	14,024
Cash, end of period	3,027	6,144
Non-Guarantor Subsidiaries
Condensed Financial Statements Captions [Line Items]
Net cash (used for) provided by operating activities	117,084	24,895
Net cash used for investing activities	(114,405)	(2,218)
Net cash provided by (used for) financing activities	(18,588)	(19,731)
Effect of changes in currency exchange rates	(1,834)	2,530
Increase (decrease) in cash	(17,743)	5,476
Cash, beginning of year	187,958	195,970
Cash, end of period	170,215	201,446
Elimination
Condensed Financial Statements Captions [Line Items]
Net cash (used for) provided by operating activities	(139,222)	(130,505)
Net cash provided by (used for) financing activities	$ 139,222	$ 130,505

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section 45

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6361293&loc=d3e6676-107765

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash Equivalents

-URI http://asc.fasb.org/extlink&oid=6507016

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 8, 9

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 7, 26

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash

-URI http://asc.fasb.org/extlink&oid=6506951

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3044-108585

Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 7

-Footnote 1

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.1)

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

Reference 9: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 1

-Article 5

+ Details

- Definition

Amount of increase (decrease) in cash and cash equivalents. Cash and cash equivalents are the amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

+ References+ Details

- Definition

The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label.

+ References+ Details