Financing Transactions (Components Of Debt) (Details)	Sep. 30, 2011 USD ($)	Sep. 30, 2011 EUR (€)	Dec. 31, 2010 USD ($)	Sep. 30, 2011 4.5% Guaranteed Eurobond Notes Due 2013 [Member] USD ($)	Dec. 31, 2010 4.5% Guaranteed Eurobond Notes Due 2013 [Member] USD ($)	Sep. 30, 2011 Floating Rate Senior Notes Due 2013 [Member] USD ($)	Dec. 31, 2010 Floating Rate Senior Notes Due 2013 [Member] USD ($)	Sep. 30, 2011 2014 Notes [Member] USD ($)	Jun. 23, 2011 2014 Notes [Member]	Dec. 31, 2010 2014 Notes [Member] USD ($)	Sep. 30, 2011 2016 Notes [Member] USD ($)	Jun. 23, 2011 2016 Notes [Member]	Dec. 31, 2010 2016 Notes [Member] USD ($)	Sep. 30, 2011 5.625% Notes Due 2018 [Member] USD ($)	Dec. 31, 2010 5.625% Notes Due 2018 [Member] USD ($)	Sep. 30, 2011 5.4% Notes Due 2019 [Member] USD ($)	Dec. 31, 2010 5.4% Notes Due 2019 [Member] USD ($)	Sep. 30, 2011 2021 Notes [Member] USD ($)	Jun. 23, 2011 2021 Notes [Member]	Dec. 31, 2010 2021 Notes [Member] USD ($)	Sep. 30, 2011 Zero-Coupon Liquid Yield Option Notes Due 2021 (LYONs) [Member] USD ($)	Dec. 31, 2010 Zero-Coupon Liquid Yield Option Notes Due 2021 (LYONs) [Member] USD ($)
U.S. dollar-denominated commercial paper	$ 1,562,700,000		$ 180,000,000
Senior notes				669,500,000	668,900,000	300,000,000		400,000,000			500,000,000			500,000,000	500,000,000	750,000,000	750,000,000	600,000,000
Zero-coupon Liquid Yield Option Notes due 2021 (LYONs)																					377,600,000	573,400,000
Other	235,900,000		152,400,000
Total debt	5,895,700,000		2,824,700,000
Less - currently payable	82,284,000		40,761,000
Long-term debt	5,813,406,000		2,783,907,000
Guaranteed Eurobond Notes 4.5% due 2013 in Euros		€ 500,000,000
Interest rate of debt instrument				4.50%				1.30%	1.30%		2.30%	2.30%		5.625%		5.40%		3.90%	3.90%
Debt instrument, maturity year				2013				2014			2016			2018		2019		2021