Debt - Additional Information (Detail)	1 Months Ended				12 Months Ended					12 Months Ended		1 Months Ended	12 Months Ended					12 Months Ended			1 Months Ended	12 Months Ended
	Dec. 31, 2012 USD ($)	Apr. 30, 2012 USD ($)	May 31, 2008 USD ($)	Nov. 30, 2007 USD ($)	Dec. 31, 2012 USD ($) Property	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2012 JPY (¥)	Mar. 31, 2007 USD ($)	Dec. 31, 2012 Revolver [Member]	Dec. 31, 2012 Global Facility [Member]	Mar. 31, 2010 Convertible Note 2010 [Member] USD ($)	Dec. 31, 2012 Senior Term Loan [Member] USD ($) SecurityLoan Renewals	Dec. 31, 2012 Senior Term Loan [Member] EUR (€) SecurityLoan	Mar. 16, 2010 3.25% convertible senior notes maturing in 2015 [Member] USD ($)	Dec. 31, 2012 Secured Mortgage Debt [Member] USD ($)	Dec. 31, 2012 Secured Mortgage Debt [Member] JPY (¥)	Dec. 31, 2012 Secured Mortgage Debt [Member]	Dec. 31, 2012 Secured Mortgage Debt [Member] Minimum [Member]	Dec. 31, 2012 Secured Mortgage Debt [Member] Maximum [Member]	Mar. 31, 2007 Convertible Note in 2007 and 2008 [Member] USD ($)	Dec. 31, 2012 TMK bonds due March 2012 at 0.00% [Member] USD ($) Property	Dec. 31, 2012 TMK bonds due March 2012 at 0.00% [Member] JPY (¥) Property	Dec. 31, 2012 Secured Mortagage Debt [Member] USD ($)
Debt [Line Items]
Original principal amount						$ 894,500,000	$ 3,000,000,000
Gain (loss) on early extinguishment of debt, net					(14,114,000)	258,000	(201,486,000)
Global credit facility borrowing limit	1,700,000,000				1,700,000,000
Potential future global credit facility borrowing limit	2,700,000,000				2,700,000,000
Global facility maturity date										Mar. 01, 2014	Jun. 03, 2015		Feb. 02, 2014	Feb. 02, 2014
Global Facility Extended maturity date										Feb. 27, 2015	Jun. 03, 2016
Cross acceleration included in defaults	50,000,000				50,000,000
Debt revolver borrowing amount	424,000,000				424,000,000			36,500,000,000
Potential future debt revolver borrowing amount	656,000,000				656,000,000			56,500,000,000
Debt issued															460,000,000									1,000,000,000
Interest Rate															3.30%				0.80%	7.60%
Conversion rate of notes to shares of common stock			5.8569	5.4874								25.8244									5.8752
Base principal amount per note												1,000									1,000
Conversion price of exchangeable notes			$ 170.74	$ 182.24					$ 170.21			$ 38.72
Percentage of closing price of common stock, represented premium					20.00%
Approximate represented premium					20% over the closing price of our common stock
Amount of exchangeable notes paid off	141,400,000	448,900,000
Unamortized discount on debt	66,000,000				66,000,000	22,600,000
Unamortized discount related to exchangable debt	4,200,000				4,200,000
Additional paid in capital under conversion option					381,500,000	381,500,000
Number of share issued on debt conversion					2,800,000		11,900,000
Fair Value Of Derivative Instruments	39,800,000				39,800,000	17,500,000
Foreign currency exchange gain loss					22,300,000
Foreign currency exchange gain loss						45,000,000
Value of bonds issued																						424,500,000	36,600,000,000
Undepreciated value of properties securing bonds																						767,300,000
Number of properties secured in mortgage notes					107																	9	9
Interest rates of bonds issued					1.60%																	0.80%	0.80%
Interest rates of bonds issued					7.90%																	1.40%	1.40%
Increase in value of bonds																144,500,000	12,400,000,000
Prior interest rate of bonds issued																			1.80%	4.00%
Reduced interest rate of bonds issued																			1.00%	1.80%
Bonds maturity date																		2012 to 2014
Extended maturity date																		December 2014 to April 2018
Undepreciated value of properties securing mortgage notes	1.3				1.3
Aggregate lender - commitments	2,118,300,000				2,118,300,000	2,184,600,000	1,601,500,000						648,500,000	487,500,000
Increased borrowing limit													1,300,000,000	987,500,000
Number of extensions to maturity period													3	3
Period for extension													Up to one year	Up to one year
Term loans assumed													2	2
Exchangeable Senior Notes Outstanding					6,100,000,000
Senior Notes Outstanding	180,700,000				180,700,000
Amount of capitalized interest					$ 546,600,000	$ 467,400,000	$ 381,800,000