Description of the Company and Basis of Presentation (Schedule of Changes in Accounting Policy Regarding Pension and Other Postretirement Benefits - Consolidated Statements of Cash Flows) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net earnings (loss)	$ 447	$ 541	[1]
Pension and postretirement benefit expense	(16)	7	[1]
Pension and postretirement contributions	(49)	(151)	[1]
Deferred income taxes, net	7	(87)	[1]
Other liabilities	143	29	[1]
As Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net earnings (loss)		510
Pension and postretirement benefit expense		0
Pension and postretirement contributions		0
Deferred income taxes, net		(96)
Other liabilities		(75)
Effect of Change [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net earnings (loss)		31
Pension and postretirement benefit expense		7
Pension and postretirement contributions		(151)
Deferred income taxes, net		9
Other liabilities		$ 104

[1] As Adjusted (Note 1)