Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2011

Accounting Policies [Abstract]

Components Of Fixed Assets

December 31,
(In millions of dollars)	2011			2010
Furniture and equipment	$	1,101		$	1,079
Land and buildings	405			402
Leasehold and building improvements	767			752
	2,273			2,233
Less-accumulated depreciation and amortization	(1,469		)	(1,411		)
	$	804		$	822

Basic Earnings per Share Calculation for Continuing Operations

Basic EPS Calculation Continuing Operations
(In millions, except per share figures)	2011		2010		2009
Net income from continuing operations	$	982	$	565	$	531
Less: Net income attributable to non-controlling interests	22		16		14
Net income from continuing operations attributable to the Company	960		549		517
Less: Portion attributable to participating securities	6		6		12
Net income attributable to common shares for basic earnings per share	$	954	$	543	$	505
Basic weighted average common shares outstanding	542		540		522

Schedule of Earnings per Share for Net Income

Basic EPS Calculation Net Income
(In millions, except per share figures)	2011		2010		2009
Net income attributable to the Company	$	993	$	855	$	227
Less: Portion attributable to participating securities	6		11		4
Net income attributable to common shares for basic earnings per share	$	987	$	844	$	223
Basic weighted average common shares outstanding	542		540		522

Diluted Earnings per Share for Continuing Operations

Diluted EPS Calculation Continuing Operations
(In millions, except per share figures)	2011		2010		2009
Net income from continuing operations	$	982	$	565	$	531
Less: Net income attributable to non-controlling interests	22		16		14
Net income from continuing operations attributable to the Company	960		549		517
Less: Portion attributable to participating securities	6		6		12
Net income attributable to common shares for diluted earnings per share	$	954	$	543	$	505
Basic weighted average common shares outstanding	542		540		522
Dilutive effect of potentially issuable common shares	9		4		2
Diluted weighted average common shares outstanding	551		544		524
Average stock price used to calculate common stock equivalents	$	29.40	$	23.76	$	21.44

Schedule of Diluted Earnings per Share for Net Income

Diluted EPS Calculation Net Income
(In millions, except per share figures)	2011		2010		2009
Net income attributable to the Company	$	993	$	855	$	227
Less: Portion attributable to participating securities	6		11		4
Net income attributable to common shares for diluted earnings per share	$	987	$	844	$	223
Basic weighted average common shares outstanding	542		540		522
Dilutive effect of potentially issuable common shares	9		4		2
Diluted weighted average common shares outstanding	551		544		524
Average stock price used to calculate common stock equivalents	$	29.40	$	23.76	$	21.44