Stock-Based Compensation Stock-Based Compensation (Details 5) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Defined Benefit Plan, Service Cost	$ 2
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	33
Defined Benefit Plan, Plan Amendments	88
Defined Benefit Plan, Net Periodic Benefit Cost	37		27		21
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Noncurrent Liabilities	(155)	[1]	(116)	[1]
Accumulated Other Comprehensive Loss	(117)		(113)		(100)	(104)
Retirement and Restoration Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension Benefit Obligation	(394)		(343)
Fair Value of Plan Assets	265		247
Net Amount Recognized in Consolidated Balance Sheet	(129)		(96)
Noncurrent Liabilities	(123)		(90)
Net Prior Service (Cost) Credit, Before Tax	(88)		(2)
Net Gains (Losses), Before Tax	56		133
Accumulated Other Comprehensive Loss	(144)		(135)
Medical and Life Plans [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Pension Benefit Obligation	(36)		(27)
Fair Value of Plan Assets	0		0
Net Amount Recognized in Consolidated Balance Sheet	(36)		(27)
Noncurrent Liabilities	(34)		(26)
Net Prior Service (Cost) Credit, Before Tax	6		8
Net Gains (Losses), Before Tax	15		12
Accumulated Other Comprehensive Loss	$ (9)		$ (4)

[1] Amount includes liabilities accrued under our defined benefit pension plan, restoration plan, and other postretirement benefit plans. See Note 12. Stock-Based and Other Compensation Plans.