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

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

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- Definition

Maximum contractual interest rate for funds borrowed, under the debt agreement.

+ References

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- Definition

Minimum 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)(2))

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

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Debt - Long-Term Debt and Short-Term Borrowings (Parenthetical) (Detail)										12 Months Ended
	Dec. 31, 2013 Senior Notes, interest at 7.375%, maturing 2015 [Member]	Dec. 31, 2012 Senior Notes, interest at 7.375%, maturing 2015 [Member]	Dec. 31, 2013 Senior Notes, interest at 6.75%, maturing 2018 [Member]	Dec. 31, 2012 Senior Notes, interest at 6.75%, maturing 2018 [Member]	Dec. 31, 2013 Senior Notes, interest at 7.15%, maturing 2019 [Member]	Dec. 31, 2012 Senior Notes, interest at 7.15%, maturing 2019 [Member]	Dec. 31, 2013 Senior Notes, interest at 3.125%, maturing 2023 [Member]	Dec. 31, 2012 Senior Notes, interest at 3.125%, maturing 2023 [Member]	Dec. 05, 2012 Senior Notes, interest at 3.125%, maturing 2023 [Member]	Dec. 31, 2013 Mortgages and other, interest rates ranging from 1.00% to 9.00%, various maturities [Member]	Dec. 31, 2012 Mortgages and other, interest rates ranging from 1.00% to 9.00%, various maturities [Member]
Debt Instrument [Line Items]
Interest rate, stated rate	7.375%	7.375%	6.75%	6.75%	7.15%	7.15%	3.125%	3.125%	3.125%
Minimum interest rate, stated percentage on revolving credit facilities										1.00%	1.00%
Maximum interest rate, stated percentage on revolving credit facilities										9.00%	9.00%