Debt and Financing Arrangements (Details)	3 Months Ended																		3 Months Ended				3 Months Ended
	Jun. 30, 2011	Mar. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Jun. 30, 2010 USD ($)	Dec. 31, 2009 USD ($)	Dec. 31, 2009 3 year, floating rate loan agreement 1 [Member] JPY (¥)	Dec. 31, 2009 3 year, floating rate loan agreement 2 [Member] JPY (¥)	Mar. 31, 2010 3 year, floating rate loan agreement 3 [Member] JPY (¥)	Mar. 31, 2011 5.25% fixed rate notes [Member] USD ($)	Jun. 30, 2010 5.25% fixed rate notes [Member] USD ($)	Mar. 31, 2010 5.25% fixed rate notes [Member] USD ($)	Dec. 31, 2009 5.25% fixed rate notes [Member] USD ($)	Jun. 30, 2011 11.50% notes due 2042 [Member] USD ($)	Mar. 31, 2011 Floating rate senior unsecured notes due 2014 [Member] USD ($)	Mar. 31, 2011 1.75% senior unsecured fixed rate notes due 2014 [Member] USD ($)	Mar. 31, 2011 4.25% senior unsecured fixed rate notes due 2021 [Member] USD ($)	Mar. 31, 2011 5.70% senior unsecured fixed rate notes due 2041 [Member] USD ($)	Mar. 31, 2010 5.0% senior unsecured fixed rate notes due 2020 [Member] USD ($)	Mar. 31, 2011 Floating rate loan [Member] EUR (€)	Mar. 31, 2011 Four-year credit facility [Member] USD ($)	Mar. 31, 2011 Five-year credit facility [Member] USD ($)	Jun. 30, 2010 Revolving credit facility [Member] EUR (€)	Jun. 30, 2010 One year committed, revolving credit facility [Member] EUR (€)	Mar. 31, 2011 Committed revolving facility [Member] USD ($)	Jun. 30, 2011 150 million euro revolving credit facility [Member] EUR (€)	Jun. 30, 2011 50 million euro revolving credit facility [Member] EUR (€)
Debt and Financing Arrangements (Textuals)
Principal amount of debt													$ 8,000,000	$ 350,000,000	$ 450,000,000	$ 500,000,000	$ 300,000,000	$ 500,000,000	€ 100,000,000
Interest rate on notes									5.25%				11.50%		1.75%	4.25%	5.70%	5.00%
Length of debt, years						3 years	3 years	3 years											6 years
Debt retired, amount			82,000,000			12,000,000,000	7,000,000,000	18,000,000,000	654,000,000	18,000,000	61,000,000	13,000,000
Debt and Financing Arrangements (Textuals)
Amount of credit facility retired																					2,050,000,000	50,000,000		100,000,000	150,000,000	50,000,000
Amount of credit facility																				2,500,000,000			50,000,000
Length of credit facility, years																				4 years	5 years		1 year
Number of equity units exercised	157,820
Number of shares of common stock issued during the period as a result of equity units exercised	766,673
Aggregate net proceeds from the issues of notes		1,600,000,000
Number of convertible senior notes redeemed				200
Par value of convertible senior notes redeemed				200,000
Number of convertible senior notes repurchased					1,685
Par value of convertible senior notes repurchased					$ 1,685,000
Interest rate on convertible senior notes	6.50%			6.50%	6.50%