Financing Arrangements and Derivative Financial Instruments (Notes, Long-term Debt, and Capital Leases - Narrative) (Details) In Millions, unless otherwise specified	12 Months Ended					12 Months Ended		12 Months Ended		12 Months Ended			12 Months Ended										12 Months Ended
	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2012 8.25% Senior Notes due 2020 [Member] USD ($)	Dec. 31, 2012 Long-term Debt [Member] USD ($)	Dec. 31, 2012 7% Notes due 2022 [Member] USD ($)	Feb. 28, 2012 7% Notes due 2022 [Member] USD ($)	Dec. 31, 2012 10.5% Notes due 2016 [Member] USD ($)	Mar. 29, 2012 10.5% Notes due 2016 [Member] USD ($)	Dec. 31, 2012 8.75% Notes due 2020 [Member] USD ($)	Dec. 31, 2012 7% Notes due 2028 [Member] USD ($)	Dec. 31, 2012 Short-term Debt [Member] USD ($)	Dec. 31, 2012 Period Commencing August 30, 2015 [Member] 8.25% Senior Notes due 2020 [Member]	Dec. 31, 2012 Period Commencing August 30, 2016 [Member] 8.25% Senior Notes due 2020 [Member]	Dec. 31, 2012 Period Commencing August 30, 2017 [Member] 8.25% Senior Notes due 2020 [Member]	Dec. 31, 2012 Period Commencing August 30, 2018 [Member] 8.25% Senior Notes due 2020 [Member]	Dec. 31, 2012 Period Commencing May 15, 2017 [Member] 7% Notes due 2022 [Member]	Dec. 31, 2012 Period Commencing May 15, 2018 [Member] 7% Notes due 2022 [Member]	Dec. 31, 2012 Period Commencing May 15, 2019 [Member] 7% Notes due 2022 [Member]	Dec. 31, 2012 Period Commencing May 15, 2020 [Member] 7% Notes due 2022 [Member]	Dec. 31, 2012 6.75% Euro Notes due 2019 [Member] EUR (€)	Apr. 20, 2011 6.75% Euro Notes due 2019 [Member]	Dec. 31, 2012 6.75% Euro Notes due 2019 [Member] Period Commencing April 30, 2015 [Member]	Dec. 31, 2012 6.75% Euro Notes due 2019 [Member] Period Commencing April 30, 2016 [Member]	Dec. 31, 2012 6.75% Euro Notes due 2019 [Member] Period Commencing April 30, 2017 [Member]
Debt Instrument [Line Items]
Credit Arrangements	$ 8,387				$ 7,837							$ 550
Debt Instrument, Face Amount				1,000		700	700		650	282	150										250
Debt Instrument, Unused Borrowing Capacity, Amount	2,949				2,501							448
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate	38.00%
Average Variable Interest Rate For All Variable Rate Credit Arrangements	5.50%
Interest on Notes				8.25%		7.00%	7.00%	10.50%	10.50%	8.75%	7.00%										6.75%
Debt Instrument, Maturity Date						May 15, 2022				Aug. 15, 2020	Mar. 15, 2028										Apr. 15, 2019
Carrying Amount of Early Debt Repayment	650
Notes sold at as a percentage of principle amount							100.00%															100.00%
Debt Instrument, Interest Rate, Effective Percentage				8.349%						9.20%
Debt Instrument, Issuance Date						Feb. 28, 2012
Redemption Price In Percentage													104.125%	102.75%	101.375%	100.00%	103.50%	102.333%	101.167%	100.00%			103.375%	101.688%	100.00%
Redemption Price In Percentage Plus A Make-Whole Premium				100.00%		100.00%				100.00%	100.00%										100.00%
Percent of Notes That May Be Redeemed With Certain Equity Offerings				35.00%		35.00%															35.00%
Redemption Price In Percentage With Proceeds Of Certain Equity Offerings				108.25%		107.00%															106.75%
Debt Instrument, Restrictive Covenants										The terms of the indenture for these notes, among other things, limit our ability and the ability of certain of our subsidiaries to (i) incur secured debt, (ii) engage in sale and leaseback transactions, and (iii) consolidate, merge, sell or otherwise dispose of all or substantially all of our assets. These covenants are subject to significant exceptions and qualifications.	The terms of the indenture for these notes, among other things, limit our ability and the ability of certain of our subsidiaries to (i) incur secured debt, (ii) engage in sale and leaseback transactions, and (iii) consolidate, merge, sell or otherwise dispose of all or substantially all of our assets. These covenants are subject to significant exceptions and qualifications.										The terms of the indenture for these notes, among other things, limit the ability of the Company and certain of its subsidiaries, including GDTE, (i) to incur additional debt or issue redeemable preferred stock, (ii) pay dividends or make certain other restricted payments or investments, (iii) incur liens, (iv) sell assets, (v) incur restrictions on the ability of our subsidiaries to pay dividends to us, (vi) enter into affiliate transactions, (vii) engage in sale and leaseback transactions, and (viii) consolidate, merge, sell or otherwise dispose of all or substantially all of our assets. These covenants are subject to significant exceptions and qualifications. For example, if these notes are assigned an investment grade rating by Moody’s and Standard & Poor's and no default has occurred or is continuing, certain covenants will be suspended.
Repayments Of Long Term Debt Including Prepayment Premium On Redemption Of Notes								709
Cash premium paid on redemption of Long-term debt		37	50					59	59
Write-off Deferred Financing Costs		16	6					27
Write off of Deferred Debt Issuance Cost								$ 27