Benefit Obligations Benefit Obligations (Schedule of Company's Pension and Post Retirement Benefit Plans) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Amounts Recognized in Accumulated Other Comprehensive Income Consist of:
Net amount recognized	$ (58)		$ 11		$ 0
Accumulated other comprehensive income (loss), related to equity method investee			(10)
Other comprehensive (income) loss, tax effect	26		4
Pension Benefits [Member]
Change in Projected Benefit Obligation
Projected benefit obligation as of beginning of period	4,199		3,761
Service cost	34		28		28
Interest cost	154		170		182
Participant contributions	0		0
Plan amendments	(1)		0
Net actuarial (gain) loss	(119)	[1]	466	[1]
Settlements	(172)		0
Benefits paid	(244)	[2]	(242)	[2]
Federal subsidy on Medicare Part D	0		0
Curtailments	(67)		0
Exchange rate changes	6		16
Other	9		0
Projected benefit obligation as of end of period	3,799		4,199		3,761
Change in Plan Assets
Fair value of plan assets as of beginning of period	2,896		2,562
Actual return on plan assets	171		294
Employer contributions	59		270
Participant contributions	0		0
Settlements	(173)		0
Benefits paid	(244)	[2]	(242)	[2]
Exchange rate changes	0		12
Fair value of plan assets as of end of period	2,709		2,896		2,562
Funded status, as of end of period	(1,090)		(1,303)
Amounts Recognized in the Consolidated Balance Sheets Consist of:
Noncurrent Other assets	11		26
Current Other liabilities	(23)		(23)
Benefit obligations	(1,078)		(1,306)
Net amount recognized	(1,090)		(1,303)
Amounts Recognized in Accumulated Other Comprehensive Income Consist of:
Net actuarial (gain) loss	9	[3]	9	[3]
Prior service (benefit) cost	(3)	[4]	6	[4]
Net amount recognized	6		15
Benefits paid	(244)	[2]	(242)	[2]
Postretirement Benefits [Member]
Change in Projected Benefit Obligation
Projected benefit obligation as of beginning of period	292		281
Service cost	2		1		1
Interest cost	9		11		13
Participant contributions	23		22
Plan amendments	(92)		4
Net actuarial (gain) loss	(37)	[1]	12	[1]
Settlements	(23)		0
Benefits paid	(43)		(46)
Federal subsidy on Medicare Part D	6		6
Curtailments	0		0
Exchange rate changes	(1)		1
Other	0		0
Projected benefit obligation as of end of period	136		292		281
Change in Plan Assets
Fair value of plan assets as of beginning of period	0		0
Actual return on plan assets	0		0
Employer contributions	43		24
Participant contributions	23		22
Settlements	(23)		0
Benefits paid	(43)		(46)
Exchange rate changes	0		0
Fair value of plan assets as of end of period	0		0		0
Funded status, as of end of period	(136)		(292)
Amounts Recognized in the Consolidated Balance Sheets Consist of:
Noncurrent Other assets	0		0
Current Other liabilities	(55)		(24)
Benefit obligations	(81)		(268)
Net amount recognized	(136)		(292)
Amounts Recognized in Accumulated Other Comprehensive Income Consist of:
Net actuarial (gain) loss	0		0
Prior service (benefit) cost	(75)	[4]	4	[4]
Net amount recognized	(75)		4
Benefits paid	(43)		(46)
Nonqualified Pension Benefits [Member]
Change in Projected Benefit Obligation
Benefits paid	(22)		(22)
Change in Plan Assets
Benefits paid	(22)		(22)
Amounts Recognized in Accumulated Other Comprehensive Income Consist of:
Benefits paid	(22)		(22)
Equity Method Investee Pension Plans and Postretirement Benefit Plans [Member]
Amounts Recognized in Accumulated Other Comprehensive Income Consist of:
Accumulated other comprehensive income (loss), related to equity method investee	$ 9		$ 9

[1] Primarily relates to change in discount rates.

[2] Includes benefit payments to nonqualified pension plans of $22 million and $22 million as of December 31, 2013 and 2012, respectively.

[3] Amount includes accumulated other comprehensive losses of $9 million and $9 million as of December 31, 2013 and 2012, respectively, related to the pension plans of the Company's equity method investments.

[4] Amount shown net of an income tax expense of $26 million and income tax benefit of $4 million as of December 31, 2013 and 2012, respectively, in the consolidated statements of equity (Note 16).