Pension, Other Postretirement Benefits and Savings Plans (Change in Fair Value of Pension Plan Assets) (Details) (Fair Value, Inputs, Level 3 [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
U.S. [Member] | Partnership Interests [Member]
Defined Benefit Plan Disclosure [Line Items]
Beginning balance	$ 157	$ 138
Realized gains (losses)	4	9
Unrealized gains (losses) relating to instruments still held at the reporting date	0	(2)
Purchases, sales, issuances and settlements (net)	30	12
Transfers out of Level 3	0
Foreign currency translation	0	0
Ending balance	191	157
U.S. [Member] | Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Beginning balance	2	3
Realized gains (losses)	0	0
Unrealized gains (losses) relating to instruments still held at the reporting date	0	(1)
Purchases, sales, issuances and settlements (net)	0	0
Transfers out of Level 3	1
Foreign currency translation	0	0
Ending balance	3	2
U.S. [Member] | Commingled Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Ending balance	0	0
U.S. [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Ending balance	0	0
Non-U.S. [Member] | Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Beginning balance	19	23
Realized gains (losses)	0	0
Unrealized gains (losses) relating to instruments still held at the reporting date	0	0
Purchases, sales, issuances and settlements (net)	0	(3)
Transfers out of Level 3	0
Foreign currency translation	0	(1)
Ending balance	19	19
Non-U.S. [Member] | Commingled Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Beginning balance	122	118
Realized gains (losses)	0	(2)
Unrealized gains (losses) relating to instruments still held at the reporting date	5	(2)
Purchases, sales, issuances and settlements (net)	10	9
Transfers out of Level 3	0
Foreign currency translation	6	(1)
Ending balance	143	122
Non-U.S. [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Beginning balance	122	100
Realized gains (losses)	0	0
Unrealized gains (losses) relating to instruments still held at the reporting date	0	5
Purchases, sales, issuances and settlements (net)	10	18
Transfers out of Level 3	0
Foreign currency translation	6	(1)
Ending balance	$ 138	$ 122