Stock Ownership Plans (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 years	Dec. 31, 2013	Dec. 31, 2012	Feb. 24, 2014	Feb. 28, 2013	Feb. 27, 2012	Dec. 31, 2011	May 31, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Price				$ 13.08	$ 7.39	$ 6.28
Total Fair Value of Market Based Awards - 2012			$ 8
Total fair value of market based awards - 2013 Awards		8
Unrecognized Compensation Cost - Stock Options	20
Fair value of the Free Cash Flow (FCF) performance awards	5	9	7
Closing stock price at year end	$ 13.25	$ 12.02	$ 5.73
Target payout of Free Cash Flows (FCF) performance awards	100.00%
Stock Issued During Period, Shares, Employee Stock Purchase Plans	2,618,000	3,833,000	3,979,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	30,535,000	37,339,000	36,593,000				33,576,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 9	$ 7	$ 7				$ 8
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	7,072,000	13,913,000	17,073,000
Measurement period - market based awards - 2012 Awards	3 years
Measurement period - market based awards - 2013 Awards		3 years
Measurement period - market based awards - 2011 Awards			3 years
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate - 2012 Awards	0.66%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate - 2013 Awards		0.34%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 13	$ 8	$ 6
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	(11,205,000)	(10,307,000)	(10,158,000)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	$ 7	$ 8	$ 9
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	(2,671,000)	(2,860,000)	(3,898,000)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period, Weighted Average Grant Date Fair Value	$ 8	$ 7	$ 7
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	39,508,000	44,892,000	54,881,000				60,921,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	4,943,000	1,992,000	4,726,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	(4,418,000)	(7,221,000)	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price	$ 8	$ 8	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period	(5,909,000)	(4,760,000)	(10,766,000)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price	$ 17	$ 21	$ 15
Stock-based compensation expense	103	105	108
Common Stock, Shares Authorized	2,000,000,000	2,000,000,000
Common Stock, Capital Shares Reserved for Future Issuance	179,000,000
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	(28)	(29)	(32)
Share-based compensation, net of tax benefit	75	76	76
compensation expense, per share - basic	$ 0.06	$ 0.06	$ 0.05
compensation expense, per share - diluted	$ 0.06	$ 0.06	$ 0.05
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price	$ 13.02	$ 7.44	$ 6.23
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 5.07	$ 2.84	$ 2.60
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	37.00%	36.00%	43.00%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	6 years	5 years 10 months 24 days	5 years 10 months 24 days
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Minimum	1.69%	0.89%	0.95%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum	2.09%	1.72%	1.15%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value	24	24	1
Total fair value of market based awards - 2014 Awards	6
Employee Stock Ownership Plan (ESOP), Compensation Expense	8	7	4
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 11	$ 12	$ 12				$ 13
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term	5 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value	145
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	29,380,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 12
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value	109
Options expected to vest	9,477,000
Options expected to vest, weighted average exercise price	$ 10
Options expected to vest, weighted average remaining contractual life	7 years 10 months 24 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Expected to Vest, Outstanding, Aggregate Intrinsic Value	35
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number	38,857,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price	$ 11
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term	4 years 10 months 24 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value	144
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value	146	80	60
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate - 2011 Awards			0.38%
Amount of employees total compensation eligible for GESOP purchase	10.00%
Global Employee Stock Purchase Plan - Exercise Amount equivalent to 85% of Fair Market Value of Common Stock at beginning or end of each offering period (whichever is less)	85.00%
Unrecognized Compensation Cost - Non-vested stock awards	133
Unrecognized Compensation Cost	153
weighted average remaining vesting period	1 year 3 months
annualweightedaverageforfeiturerate	9.00%
Nonqualified Options Vesting Period	4 years
Nonqualified Options Contractual Life	10 years
voting power of all classes of stock	10.00%
Exercise price of the fair market value of our common stock on the date of grant	110.00%
Qualified options expire over a period not to exceed	5 years
Qualified options exercise price	$ 0
Qualified options vesting period	5
High end of range [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of the target number of performance-based DSUs awarded	150.00%
Employee stock purchase plan, purchase price, range	$ 11.04	$ 7.96	$ 5.16
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of the target number of performance-based DSUs awarded	0.00%
Employee stock purchase plan, purchase price, range	$ 10.12	$ 5.01	$ 4.82
2011 LTIP Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common Stock, Shares Authorized								146,000,000
Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	50,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	20,000,000
Cost of products sold [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	6	8	15
Selling, General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	79	79	69
Research and Development Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 18	$ 18	$ 24