Segment Information (Tables)

12 Months Ended

Dec. 31, 2011

Segment Information [Abstract]

Reconciliation of Revenue from Segments to Consolidated [Table Text Block]

For the years ended December 31,			2011		2010		2009
Revenues:
	U.S.		$	4,910,366	$	4,961,839	$	4,255,534
	Canada			1,051,828		976,172		777,235
	Europe & South Africa			1,247,065		957,713		826,880
	Asia Pacific			1,429,092		1,242,189		1,085,088
	Corporate and Other			191,187		123,817		122,085
		Total	$	8,829,538	$	8,261,730	$	7,066,822

Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]

For the years ended December 31,			2011		2010		2009
Income before income taxes:
	U.S.		$	436,709	$	539,390	$	308,718
	Canada			166,613		122,378		106,335
	Europe & South Africa			100,043		85,834		52,341
	Asia Pacific			67,120		88,760		83,546
	Corporate and Other			63,895		27,455		41,405
		Total	$	834,380	$	863,817	$	592,345

Reconciliation of Assets from Segment to Consolidated [Table Text Block]

For the years ended December 31,			2011		2010		2009
Assets:
	U.S.		$	18,151,490	$	17,470,744	$	15,569,263
	Canada			3,453,094		3,441,915		3,026,515
	Europe & South Africa			1,932,452		1,584,007		1,400,580
	Asia Pacific			2,995,205		2,440,316		2,060,425
	Corporate and Other			5,571,791		4,144,926		3,192,718
		Total	$	32,104,032	$	29,081,908	$	25,249,501

Reconciliation Of Interest Expense From Segment To Consolidated [Table Text Block]

For the years ended December 31,			2011		2010		2009
Interest expense:
	Corporate and Other		$	102,638	$	90,996	$	69,940
		Total	$	102,638	$	90,996	$	69,940

Reconciliation Of Depreciation And Amortization From Segment To Consolidated [Table Text Block]

For the years ended December 31,			2011		2010		2009
Depreciation and amortization:
	U.S.		$	476,667	$	761,725	$	733,345
	Canada			170,671		167,030		145,330
	Europe & South Africa			61,160		67,403		58,297
	Asia Pacific			189,847		145,666		114,300
	Corporate and Other			9,002		8,405		7,446
		Total	$	907,347	$	1,150,229	$	1,058,718
The table above includes amortization of deferred acquisition costs, including the effect from investment related gains and losses.