Guarantor Financial Information (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended			3 Months Ended						3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended			9 Months Ended	3 Months Ended	9 Months Ended		3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Dec. 31, 2011 Bermuda Reorganization Note [Member]	Dec. 31, 2001 Bermuda Reorganization Note [Member]	Sep. 30, 2012 Ireland Reorganization Note [Member]	Sep. 30, 2009 Ireland Reorganization Note [Member]	Mar. 31, 2005 Senior Notes Due in 2015 [Member]	Dec. 31, 2001 Senior Notes Due in 2015 [Member]	Sep. 30, 2012 IR New Jersey [Member]	Sep. 30, 2011 IR New Jersey [Member]	Sep. 30, 2012 IR New Jersey [Member]	Sep. 30, 2011 IR New Jersey [Member]	Dec. 31, 2011 IR New Jersey [Member]	Sep. 30, 2012 IR Global [Member]	Sep. 30, 2011 IR Global [Member]	Sep. 30, 2012 IR Global [Member]	Sep. 30, 2011 IR Global [Member]	Dec. 31, 2011 IR Global [Member]	Sep. 30, 2012 IR International [Member]	Sep. 30, 2011 IR International [Member]	Sep. 30, 2012 IR International [Member]	Sep. 30, 2011 IR International [Member]	Dec. 31, 2011 IR International [Member]	Sep. 30, 2011 Immaterial Error Correction [Member] IR New Jersey [Member]	Sep. 30, 2011 Immaterial Error Correction [Member] IR Global [Member]	Sep. 30, 2011 Immaterial Error Correction [Member] IR Global [Member]	Dec. 31, 2011 Immaterial Error Correction [Member] IR Global [Member]	Sep. 30, 2011 Immaterial Error Correction [Member] IR International [Member]	Sep. 30, 2011 Immaterial Error Correction [Member] IR International [Member]	Dec. 31, 2011 Immaterial Error Correction [Member] IR International [Member]
Stated interest rate for debt instruments							11.00%				4.75%
Principal amount of notes							$ 3,600,000,000		$ 15,000,000,000	$ 300,000,000
Repayments of Notes payable						1,000,000,000
Settlement of net intercompany payables									4,100,000,000
Amount outstanding								10,800,000,000
Equity earnings (loss) in affiliates, net of tax	0	0	0	0								47,000,000	28,400,000	182,700,000	122,700,000		387,700,000	189,600,000	1,020,000,000	356,100,000		334,500,000	490,900,000	653,300,000	557,400,000			120,300,000	26,700,000		117,200,000	25,100,000
Investment in affiliates	0		0		0							8,151,700,000		8,151,700,000		7,921,100,000	18,270,700,000		18,270,700,000		17,362,200,000	20,919,500,000		20,919,500,000		20,206,300,000				(58,100,000)			(59,000,000)
Net cash provided by (used in) operating activities			735,500,000	740,800,000										(109,400,000)	(105,400,000)				(216,800,000)	(140,800,000)				(11,300,000)	(10,400,000)		(113,000,000)		3,500,000
Net cash provided by (used in) continuing financing activities			$ (837,400,000)	$ (650,300,000)										$ 100,300,000	$ 365,300,000				$ (25,000,000)	$ 214,900,000				$ 11,300,000	$ (1,600,000)		$ 113,000,000		$ (3,500,000)