Stockholders' Equity And Accumulated Other Comprehensive (Loss) Earnings (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended						213 Months Ended			1 Months Ended	12 Months Ended				12 Months Ended			213 Months Ended	12 Months Ended
	Dec. 31, 2013 agreement	Dec. 31, 2012 agreement	Dec. 31, 2011 agreement	Dec. 31, 2008	Dec. 31, 2006	Dec. 31, 2005	Dec. 31, 2013	Dec. 31, 2010	Dec. 31, 2013 OTTI Securities [Member]	Aug. 31, 2012 Class A Common Stock [Member]	Dec. 31, 2013 Class A Common Stock [Member]	Dec. 31, 2012 Class A Common Stock [Member]	Dec. 31, 2013 Class B Common Stock [Member]	Dec. 31, 2012 Class B Common Stock [Member]	Dec. 31, 2013 Treasury Stock [Member]	Dec. 31, 2012 Treasury Stock [Member]	Dec. 31, 2011 Treasury Stock [Member]	Dec. 31, 2013 Treasury Stock [Member]	Dec. 31, 2013 Philippine peso [Member]	Dec. 31, 2012 Philippine peso [Member]	Dec. 31, 2012 MXN [Member]	Dec. 31, 2011 MXN [Member]	Dec. 31, 2012 Euro [Member]	Dec. 31, 2011 Euro [Member]	Dec. 31, 2013 Brazilian Real [Member]	Dec. 31, 2011 Brazilian Real [Member]	Dec. 31, 2013 South African rand [Member]	Dec. 31, 2011 South African rand [Member]	Dec. 31, 2013 Authorized Unissued And Reserved For Stock Plans [Member] Class A Common Stock [Member]	Dec. 31, 2013 Authorized But Unissued Shares [Member] Class A Common Stock [Member]	Dec. 31, 2013 Authorized But Unissued Shares [Member] Class B Common Stock [Member]
Class of Stock [Line Items]
Number Of Accelerated Share Repurchase Agreements Executed	4	4	2
Percentage of increases in exchange rate values																				7.00%	8.00%		2.00%
Percentage of decreases in exchange rate values																			8.00%			11.00%		3.00%	13.00%	11.00%	19.00%	18.00%
Additional authorized amount added to repurchase authority										$ 200.0
Stock repurchase program, authorized amount										4,850.0
Stock repurchase program, remaining authorized repurchase amount											169.0
Shares repurchased during period, shares	2.7	8.1	7.9				110.3
Stock repurchased during period, value	82.0	190.0	250.0				4,680.0								82.0	190.0	250.0
Shares reissued in connection with employee benefit programs																		0.5
Treasury stock, shares, retired				16.0	16.0	44.0
Treasury stock, shares	33.8	31.1					33.8
Shares authorized											900.0	900.0	10.0	10.0															16.3	804.2	1.8
Percentage of shares received in initial transaction in accelerated share repurchase	85.00%
Percentage of shares related to holdback provision in accelerated share repurchase	15.00%
Accumulated other comprehensive income	$ (35.2)	$ (5.1)	$ (21.1)				$ (35.2)	$ 11.9	$ 0.1