Other Financial Data Schedule of Other Current Assets (Details)	Jun. 30, 2014 USD ($)		Dec. 31, 2013 USD ($)		Jun. 30, 2014 Notes Payable, Other Payables [Member] Debt Securities 6.25 Percent, Due 2014 [Member] USD ($)	Jun. 30, 2014 Notes Payable, Other Payables [Member] Debt Securities 6.25 Percent, Due 2014 [Member] EUR (€)
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage					6.25%	6.25%
Debt Instrument, Face Amount					$ 681,000,000	€ 500,000,000
Interest Payable, Current					42,000,000
Assets Held in Trust, Current	723,000,000	[1]	0	[1]
Prepaid expenses	237,000,000		229,000,000
Taxes receivable	213,000,000		111,000,000
Deferred project costs	99,000,000		98,000,000
Deferred tax assets	81,000,000		93,000,000
Other	43,000,000		32,000,000
Other Assets, Current	$ 1,396,000,000		$ 563,000,000

[1] (1)Deposit with trustee relates to the 6.25% €500 million debt securities due July 2014 and the related accrued interest, which is described further in Note 9 "Debt." The principal amount included in this balance is $681 million and the accrued interest amount is $42 million.