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RETIREMENT PLANS (Details)
 3 Months Ended 12 Months Ended
Dec. 31, 2016
USD ($)
shares
Sep. 30, 2016
USD ($)
Dec. 31, 2018
USD ($)
shares
Dec. 31, 2017
USD ($)
shares
Dec. 31, 2016
USD ($)
shares
Change in projected benefit obligation [Roll Forward]          
Actuarial (gain) loss     $ (99,000,000) $ 21,000,000 $ (97,000,000)
Amounts recognized in accumulated other comprehensive income consist of [Abstract]          
amortization of prior service costs (in years) 8        
Amortization of: [Abstract]          
Change in service costs of net periodic benefit costs for calculation method change         2,000,000
Change in interest costs of net periodic benefit costs for calculation method change         (22,000,000)
Change in service and interest costs of net periodic benefit costs for calculation method change         (20,000,000)
Other changes in plan assets and benefit obligations recognized in other comprehensive income [Abstract]          
Current year prior service credit     0 0 (103,000,000)
Amortization of: [Abstract]          
Prior service credit     40,000,000 43,000,000 48,000,000
Total     $ 40,000,000 $ 43,000,000 (55,000,000)
Post Retirement Welfare Plans [Member]          
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]          
Defined Benefit Plan, Health Care Cost Trend Rate Assumed, Next Fiscal Year     6.50%    
Defined Benefit Plan, Plan Assets, Allocations [Abstract]          
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage     100.00%    
Defined Benefit Plan, Actual Plan Asset Allocations (in hundredths)     100.00% 100.00%  
Change in projected benefit obligation [Roll Forward]          
Benefit obligation, beginning of year     $ 738,000,000 $ 737,000,000  
Service cost     0 3,000,000 5,000,000
Interest cost     22,000,000 23,000,000 27,000,000
Actuarial (gain) loss     (33,000,000) 30,000,000  
Plan amendments and other $ (106,000,000)        
Plan participants' contributions     11,000,000 12,000,000  
Effect of currency exchange     (1,000,000) 1,000,000  
Federal subsidy on benefits paid     0 1,000,000  
Benefits paid     (65,000,000) (69,000,000)  
Benefit obligation, end of year 737,000,000   672,000,000 738,000,000 737,000,000
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year     148,000,000 149,000,000  
Actual return on plan assets     (6,000,000) 22,000,000  
Effect of currency exchange     0 0  
Company contributions     43,000,000 43,000,000  
Reserve for third party contributions     4,000,000 (10,000,000)  
Plan participants' contributions     11,000,000 12,000,000  
Benefits paid     (65,000,000) (69,000,000)  
Federal subsidy on benefits paid     0 1,000,000  
Fair value of plan assets, end of year $ 149,000,000   135,000,000 148,000,000 149,000,000
Funded status at end of year     (537,000,000) (590,000,000)  
Amounts recognized in the Consolidated Statements of Financial Position consist of [Abstract]          
Other noncurrent asset     41,000,000 38,000,000  
Current liabilities     (45,000,000) (44,000,000)  
Post-employment obligations     (533,000,000) (584,000,000)  
Net amount recognized, end of year     (537,000,000) (590,000,000)  
Amounts recognized in accumulated other comprehensive income consist of [Abstract]          
Prior service (credit) cost     (182,000,000) (222,000,000)  
Defined Benefit Plan, Expected Amortization of Prior Service Cost (Credit), Next Fiscal Year     (39,000,000)    
Components of net periodic benefit cost [Abstract]          
Service cost     0 3,000,000 5,000,000
Interest cost     22,000,000 23,000,000 27,000,000
Expected return on plan assets     (5,000,000) (5,000,000) (6,000,000)
Amortization of: [Abstract]          
Prior service (credit) cost     (40,000,000) (40,000,000) (44,000,000)
Mark-to-market adjustment     (26,000,000) 23,000,000 11,000,000
Net periodic benefit cost     (49,000,000) 4,000,000 (7,000,000)
Other changes in plan assets and benefit obligations recognized in other comprehensive income [Abstract]          
Current year prior service credit     0 0 106,000,000
Amortization of: [Abstract]          
Prior service credit     (40,000,000) (40,000,000) (44,000,000)
Total     $ (40,000,000) $ (40,000,000) $ 62,000,000
Weighted-average assumptions used to determine benefit obligations for years ended [Abstract]          
Discount rate (in hundredths) 3.91%   4.26% 3.54% 3.91%
Rate of compensation increase (in hundredths) 3.25%   3.25% 3.25% 3.25%
Health care cost trend [Abstract]          
Initial (in hundredths)     6.50% 6.75% 7.00%
Decreasing to ultimate trend of (in hundredths)     5.00% 5.00% 5.00%
Projected year reaches ultimate trend rate     2025 2025 2021
Weighted-average assumptions used to determine net periodic cost for years ended [Abstract]          
Discount rate ( in hundredths)     3.54% 3.91% 4.17%
Discount rate for service costs     3.28% 4.31% 4.57%
Discount rate for interest costs     3.14% 3.28% 3.42%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets     3.75% 3.75% 3.75%
Rate of compensation increase (in hundredths)     3.25% 3.25% 3.50%
Health Care Cost Trend [Abstract]          
Initial (in hundredths)     6.75% 7.00% 7.50%
Decreasing to ultimate trend of (in hundredths)     5.00% 5.00% 5.00%
Projected Year that reaches ultimate trend rate     2025 2021 2021
Defined Benefit Plan, Effect of One Percentage Point Increase on Service and Interest Cost Components     $ 0    
Defined Benefit Plan, Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate     2025    
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate     5.00%    
Estimated future benefits payments [Abstract]          
2019     $ 57,000,000    
2020     57,000,000    
2021     57,000,000    
2022     53,000,000    
2023     47,000,000    
2024-2028     $ 225,000,000    
Post Retirement Welfare Plans [Member] | Private Equity Securities [Member]          
Defined Benefit Plan, Plan Assets, Allocations [Abstract]          
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage     0.00%    
Defined Benefit Plan, Actual Plan Asset Allocations (in hundredths)     0.00% 0.00%  
Post Retirement Welfare Plans [Member] | Debt Securities [Member]          
Defined Benefit Plan, Plan Assets, Allocations [Abstract]          
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage     100.00%    
Defined Benefit Plan, Actual Plan Asset Allocations (in hundredths)     100.00% 100.00%  
Post Retirement Welfare Plans [Member] | Real Estate [Member]          
Defined Benefit Plan, Plan Assets, Allocations [Abstract]          
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage     0.00%    
Defined Benefit Plan, Actual Plan Asset Allocations (in hundredths)     0.00% 0.00%  
Post Retirement Welfare Plans [Member] | Other Investment Companies [Member]          
Defined Benefit Plan, Plan Assets, Allocations [Abstract]          
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage [1]     0.00%    
Defined Benefit Plan, Actual Plan Asset Allocations (in hundredths) [1]     0.00% 0.00%  
Voluntary employees' beneficiary association (VEBA) trust [Member] | Post Retirement Welfare Plans [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year     $ 115,000,000    
Fair value of plan assets, end of year     107,000,000 $ 115,000,000  
Voluntary employees' beneficiary association (VEBA) trust [Member] | Post Retirement Welfare Plans [Member] | Fair Value, Inputs, Level 1 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year     2,000,000    
Fair value of plan assets, end of year     3,000,000 2,000,000  
Voluntary employees' beneficiary association (VEBA) trust [Member] | Post Retirement Welfare Plans [Member] | Fair Value, Inputs, Level 2 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year     113,000,000    
Fair value of plan assets, end of year     104,000,000 113,000,000  
Voluntary employees' beneficiary association (VEBA) trust [Member] | Post Retirement Welfare Plans [Member] | Fair Value, Inputs, Level 3 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year     0    
Fair value of plan assets, end of year     0 0  
Voluntary employees' beneficiary association (VEBA) trust [Member] | Post Retirement Welfare Plans [Member] | Cash and Cash Equivalents [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [2]     2,000,000    
Fair value of plan assets, end of year [2]     3,000,000 2,000,000  
Voluntary employees' beneficiary association (VEBA) trust [Member] | Post Retirement Welfare Plans [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [2]     2,000,000    
Fair value of plan assets, end of year [2]     3,000,000 2,000,000  
Voluntary employees' beneficiary association (VEBA) trust [Member] | Post Retirement Welfare Plans [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [2]     0    
Fair value of plan assets, end of year [2]     0 0  
Voluntary employees' beneficiary association (VEBA) trust [Member] | Post Retirement Welfare Plans [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [2]     0    
Fair value of plan assets, end of year [2]     0 0  
Voluntary employees' beneficiary association (VEBA) trust [Member] | Post Retirement Welfare Plans [Member] | Fixed Income (US) [Member] | Debt Securities [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [3]     82,000,000    
Fair value of plan assets, end of year [3]     78,000,000 82,000,000  
Voluntary employees' beneficiary association (VEBA) trust [Member] | Post Retirement Welfare Plans [Member] | Fixed Income (US) [Member] | Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [3]     0    
Fair value of plan assets, end of year [3]     0 0  
Voluntary employees' beneficiary association (VEBA) trust [Member] | Post Retirement Welfare Plans [Member] | Fixed Income (US) [Member] | Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [3]     82,000,000    
Fair value of plan assets, end of year [3]     78,000,000 82,000,000  
Voluntary employees' beneficiary association (VEBA) trust [Member] | Post Retirement Welfare Plans [Member] | Fixed Income (US) [Member] | Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [3]     0    
Fair value of plan assets, end of year [3]     0 0  
Voluntary employees' beneficiary association (VEBA) trust [Member] | Post Retirement Welfare Plans [Member] | Fixed Income (Non-U.S.) [Member] | Debt Securities [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [3]     31,000,000    
Fair value of plan assets, end of year [3]     26,000,000 31,000,000  
Voluntary employees' beneficiary association (VEBA) trust [Member] | Post Retirement Welfare Plans [Member] | Fixed Income (Non-U.S.) [Member] | Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [3]     0    
Fair value of plan assets, end of year [3]     0 0  
Voluntary employees' beneficiary association (VEBA) trust [Member] | Post Retirement Welfare Plans [Member] | Fixed Income (Non-U.S.) [Member] | Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [3]     31,000,000    
Fair value of plan assets, end of year [3]     26,000,000 31,000,000  
Voluntary employees' beneficiary association (VEBA) trust [Member] | Post Retirement Welfare Plans [Member] | Fixed Income (Non-U.S.) [Member] | Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [3]     0    
Fair value of plan assets, end of year [3]     $ 0 $ 0  
Employee stock ownership plan which is a component of Eastman Investment Plan EIP/ESOP [Member]          
Defined Contribution Investment Plan and Employee Stock Ownership Plan          
Anticipated percentage of employer contribution to the plan for all U.S. employees (in hundredths)     5.00%    
Allocated shares in the ESOP (in shares) | shares 2,183,950   2,119,614 2,130,176 2,183,950
Percentage of an employee's remuneration that is being matched by the employer (in hundredths)     7.00%    
Percentage of company match of the first seven percent of employee's compensation contributed to the plan (in hundredths)     50.00%    
Charges for domestic contributions to the Defined Contribution plans     $ 67,000,000 $ 64,000,000 $ 63,000,000
Domestic Plan [Member]          
Defined Benefit Plan, Information about Plan Assets [Abstract]          
Amount of defined benefit pension plan funded by the company     0 200,000,000  
Defined Benefit Plan, Pension Plan with Project Benefit Obligation in Excess of Plan Assets [Abstract]          
Projected benefit obligation     1,726,000,000 1,709,000,000  
Fair value of plan assets     1,585,000,000 1,597,000,000  
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract]          
Projected benefit obligation     1,726,000,000 170,000,000 [4]  
Accumulated benefit obligation     1,667,000,000 159,000,000 [4]  
Fair value of plan assets     1,585,000,000 117,000,000 [4]  
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year     2,054,000,000    
Fair value of plan assets, end of year     1,820,000,000 2,054,000,000  
Domestic Plan [Member] | Investments measured at net asset value [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [5]     2,030,000,000    
Fair value of plan assets, end of year [5]     1,802,000,000 2,030,000,000  
Domestic Plan [Member] | Cash and Cash Equivalents [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [2]     20,000,000    
Fair value of plan assets, end of year [2]     16,000,000 20,000,000  
Domestic Plan [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [2]     20,000,000    
Fair value of plan assets, end of year [2]     16,000,000 20,000,000  
Domestic Plan [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [2]     0    
Fair value of plan assets, end of year [2]     0 0  
Domestic Plan [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [2]     0    
Fair value of plan assets, end of year [2]     0 0  
Domestic Plan [Member] | United States [Member] | Public Equity Funds [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [6]     4,000,000    
Fair value of plan assets, end of year [6]     2,000,000 4,000,000  
Domestic Plan [Member] | United States [Member] | Public Equity Funds [Member] | Fair Value, Inputs, Level 1 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [6]     4,000,000    
Fair value of plan assets, end of year [6]     2,000,000 4,000,000  
Domestic Plan [Member] | United States [Member] | Public Equity Funds [Member] | Fair Value, Inputs, Level 2 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [6]     0    
Fair value of plan assets, end of year [6]     0 0  
Domestic Plan [Member] | United States [Member] | Public Equity Funds [Member] | Fair Value, Inputs, Level 3 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [6]     0    
Fair value of plan assets, end of year [6]     0 0  
Domestic Plan [Member] | Other Alternative Investments [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [7]     0    
Fair value of plan assets, end of year [7]     0 0  
Domestic Plan [Member] | Other Alternative Investments [Member] | Fair Value, Inputs, Level 1 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [7]     0    
Fair value of plan assets, end of year [7]     0 0  
Domestic Plan [Member] | Other Alternative Investments [Member] | Fair Value, Inputs, Level 2 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [7]     0    
Fair value of plan assets, end of year [7]     0 0  
Domestic Plan [Member] | Other Alternative Investments [Member] | Fair Value, Inputs, Level 3 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [7]     0    
Fair value of plan assets, end of year [7]     0 0  
Domestic Plan [Member] | Cash and cash equivalents, public equity, and other investments [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year     24,000,000    
Fair value of plan assets, end of year     18,000,000 24,000,000  
Domestic Plan [Member] | Cash and cash equivalents, public equity, and other investments [Member] | Fair Value, Inputs, Level 1 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year     24,000,000    
Fair value of plan assets, end of year     18,000,000 24,000,000  
Domestic Plan [Member] | Cash and cash equivalents, public equity, and other investments [Member] | Fair Value, Inputs, Level 2 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year     0    
Fair value of plan assets, end of year     0 0  
Domestic Plan [Member] | Cash and cash equivalents, public equity, and other investments [Member] | Fair Value, Inputs, Level 3 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year     0    
Fair value of plan assets, end of year     $ 0 $ 0  
Domestic Plan [Member] | Pension Plan [Member]          
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]          
Expected Long-Term Rate of Return on Plan Assets     7.43% 7.48%  
Defined Benefit Plan, Plan Assets, Allocations [Abstract]          
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage     100.00%    
Defined Benefit Plan, Actual Plan Asset Allocations (in hundredths)     100.00% 100.00%  
Change in projected benefit obligation [Roll Forward]          
Benefit obligation, beginning of year     $ 2,154,000,000 $ 2,141,000,000  
Service cost     35,000,000 37,000,000 39,000,000
Interest cost     67,000,000 66,000,000 74,000,000
Actuarial (gain) loss     (119,000,000) 94,000,000  
Plan participants' contributions     0 0  
Effect of currency exchange     0 0  
Federal subsidy on benefits paid     0 0  
Benefits paid     (178,000,000) (184,000,000)  
Benefit obligation, end of year $ 2,141,000,000   1,959,000,000 2,154,000,000 2,141,000,000
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year     2,054,000,000 1,959,000,000  
Actual return on plan assets     (61,000,000) 271,000,000  
Effect of currency exchange     0 0  
Company contributions     5,000,000 8,000,000  
Reserve for third party contributions     0 0  
Plan participants' contributions     0 0  
Benefits paid     (178,000,000) (184,000,000)  
Federal subsidy on benefits paid     0 0  
Fair value of plan assets, end of year $ 1,959,000,000   1,820,000,000 2,054,000,000 1,959,000,000
Funded status at end of year     (139,000,000) (100,000,000)  
Amounts recognized in the Consolidated Statements of Financial Position consist of [Abstract]          
Other noncurrent asset     2,000,000 12,000,000  
Current liabilities     (4,000,000) (3,000,000)  
Post-employment obligations     (137,000,000) (109,000,000)  
Net amount recognized, end of year     (139,000,000) (100,000,000)  
Accumulated benefit obligation basis for all defined benefit pension plans     1,900,000,000 2,031,000,000  
Amounts recognized in accumulated other comprehensive income consist of [Abstract]          
Prior service (credit) cost     2,000,000 1,000,000  
Components of net periodic benefit cost [Abstract]          
Service cost     35,000,000 37,000,000 39,000,000
Interest cost     67,000,000 66,000,000 74,000,000
Expected return on plan assets     (147,000,000) (140,000,000) (138,000,000)
Amortization of: [Abstract]          
Prior service (credit) cost     (1,000,000) (4,000,000) (4,000,000)
Mark-to-market adjustment     89,000,000 (37,000,000) 34,000,000
Net periodic benefit cost     43,000,000 (78,000,000) 5,000,000
Other changes in plan assets and benefit obligations recognized in other comprehensive income [Abstract]          
Current year prior service credit     0 0 (3,000,000)
Amortization of: [Abstract]          
Prior service credit     (1,000,000) (4,000,000) (4,000,000)
Total     $ (1,000,000) $ (4,000,000) $ (7,000,000)
Weighted-average assumptions used to determine benefit obligations for years ended [Abstract]          
Discount rate (in hundredths) 3.89%   4.29% 3.57% 3.89%
Rate of compensation increase (in hundredths) 3.25%   3.25% 3.25% 3.25%
Weighted-average assumptions used to determine net periodic cost for years ended [Abstract]          
Discount rate ( in hundredths)     3.57% 3.89% 4.13%
Discount rate for service costs     3.64% 3.89% 4.13%
Discount rate for interest costs     3.18% 3.24% 3.33%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets     7.48% 7.49% 7.60%
Rate of compensation increase (in hundredths)     3.25% 3.25% 3.50%
Estimated future benefits payments [Abstract]          
2019     $ 200,000,000    
2020     168,000,000    
2021     159,000,000    
2022     156,000,000    
2023     151,000,000    
2024-2028     $ 718,000,000    
Domestic Plan [Member] | Pension Plan [Member] | Private Equity Securities [Member]          
Defined Benefit Plan, Plan Assets, Allocations [Abstract]          
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage     43.00%    
Defined Benefit Plan, Actual Plan Asset Allocations (in hundredths)     43.00% 48.00%  
Domestic Plan [Member] | Pension Plan [Member] | Debt Securities [Member]          
Defined Benefit Plan, Plan Assets, Allocations [Abstract]          
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage     40.00%    
Defined Benefit Plan, Actual Plan Asset Allocations (in hundredths)     44.00% 40.00%  
Domestic Plan [Member] | Pension Plan [Member] | Real Estate [Member]          
Defined Benefit Plan, Plan Assets, Allocations [Abstract]          
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage     2.00%    
Defined Benefit Plan, Actual Plan Asset Allocations (in hundredths)     2.00% 2.00%  
Domestic Plan [Member] | Pension Plan [Member] | Other Investment Companies [Member]          
Defined Benefit Plan, Plan Assets, Allocations [Abstract]          
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage [1]     15.00%    
Defined Benefit Plan, Actual Plan Asset Allocations (in hundredths) [1]     11.00% 10.00%  
Foreign Plan [Member]          
Defined Benefit Plan, Pension Plan with Project Benefit Obligation in Excess of Plan Assets [Abstract]          
Projected benefit obligation     $ 840,000,000 $ 658,000,000  
Fair value of plan assets     713,000,000 530,000,000  
Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Abstract]          
Projected benefit obligation     568,000,000 618,000,000  
Accumulated benefit obligation     547,000,000 596,000,000  
Fair value of plan assets     448,000,000 492,000,000  
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year     773,000,000    
Fair value of plan assets, end of year     713,000,000 773,000,000  
Foreign Plan [Member] | Investments measured at net asset value [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [5]     665,000,000    
Fair value of plan assets, end of year [5]     609,000,000 665,000,000  
Foreign Plan [Member] | Cash and Cash Equivalents [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [2]     57,000,000    
Fair value of plan assets, end of year [2]     53,000,000 57,000,000  
Foreign Plan [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [2]     57,000,000    
Fair value of plan assets, end of year [2]     53,000,000 57,000,000  
Foreign Plan [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [2]     0    
Fair value of plan assets, end of year [2]     0 0  
Foreign Plan [Member] | Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [2]     0    
Fair value of plan assets, end of year [2]     0 0  
Foreign Plan [Member] | United States [Member] | Public Equity Funds [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [6]     0    
Fair value of plan assets, end of year [6]     0 0  
Foreign Plan [Member] | United States [Member] | Public Equity Funds [Member] | Fair Value, Inputs, Level 1 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [6]     0    
Fair value of plan assets, end of year [6]     0 0  
Foreign Plan [Member] | United States [Member] | Public Equity Funds [Member] | Fair Value, Inputs, Level 2 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [6]     0    
Fair value of plan assets, end of year [6]     0 0  
Foreign Plan [Member] | United States [Member] | Public Equity Funds [Member] | Fair Value, Inputs, Level 3 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [6]     0    
Fair value of plan assets, end of year [6]     0 0  
Foreign Plan [Member] | Other Alternative Investments [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [7]     51,000,000    
Fair value of plan assets, end of year [7]     51,000,000 51,000,000  
Foreign Plan [Member] | Other Alternative Investments [Member] | Fair Value, Inputs, Level 1 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [7]     0    
Fair value of plan assets, end of year [7]     0 0  
Foreign Plan [Member] | Other Alternative Investments [Member] | Fair Value, Inputs, Level 2 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [7]     0    
Fair value of plan assets, end of year [7]     0 0  
Foreign Plan [Member] | Other Alternative Investments [Member] | Fair Value, Inputs, Level 3 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [7]     51,000,000    
Fair value of plan assets, end of year [7]     51,000,000 51,000,000  
Foreign Plan [Member] | Cash and cash equivalents, public equity, and other investments [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year     108,000,000    
Fair value of plan assets, end of year     104,000,000 108,000,000  
Foreign Plan [Member] | Cash and cash equivalents, public equity, and other investments [Member] | Fair Value, Inputs, Level 1 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year     57,000,000    
Fair value of plan assets, end of year     53,000,000 57,000,000  
Foreign Plan [Member] | Cash and cash equivalents, public equity, and other investments [Member] | Fair Value, Inputs, Level 2 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year     0    
Fair value of plan assets, end of year     0 0  
Foreign Plan [Member] | Cash and cash equivalents, public equity, and other investments [Member] | Fair Value, Inputs, Level 3 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year     51,000,000    
Fair value of plan assets, end of year     $ 51,000,000 $ 51,000,000  
Foreign Plan [Member] | Pension Plan [Member]          
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]          
Expected Long-Term Rate of Return on Plan Assets     4.49% 4.83%  
Defined Benefit Plan, Plan Assets, Allocations [Abstract]          
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage     100.00%    
Defined Benefit Plan, Actual Plan Asset Allocations (in hundredths)     100.00% 100.00%  
Change in projected benefit obligation [Roll Forward]          
Benefit obligation, beginning of year     $ 893,000,000 $ 801,000,000  
Service cost     14,000,000 13,000,000 $ 12,000,000
Interest cost     20,000,000 20,000,000 23,000,000
Actuarial (gain) loss   $ (30,000,000) (20,000,000) (11,000,000)  
Plan participants' contributions     1,000,000 1,000,000  
Effect of currency exchange     (45,000,000) 90,000,000  
Federal subsidy on benefits paid     0 0  
Benefits paid     (23,000,000) (21,000,000)  
Benefit obligation, end of year $ 801,000,000   840,000,000 893,000,000 801,000,000
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year     773,000,000 667,000,000  
Actual return on plan assets     (19,000,000) 31,000,000  
Effect of currency exchange     (39,000,000) 76,000,000  
Company contributions     20,000,000 19,000,000  
Reserve for third party contributions     0 0  
Plan participants' contributions     1,000,000 1,000,000  
Benefits paid     (23,000,000) (21,000,000)  
Federal subsidy on benefits paid     0 0  
Fair value of plan assets, end of year $ 667,000,000   713,000,000 773,000,000 667,000,000
Funded status at end of year     (127,000,000) (120,000,000)  
Amounts recognized in the Consolidated Statements of Financial Position consist of [Abstract]          
Other noncurrent asset     0 8,000,000  
Current liabilities     (1,000,000) (1,000,000)  
Post-employment obligations     (126,000,000) (127,000,000)  
Net amount recognized, end of year     (127,000,000) (120,000,000)  
Accumulated benefit obligation basis for all defined benefit pension plans     796,000,000 845,000,000  
Amounts recognized in accumulated other comprehensive income consist of [Abstract]          
Prior service (credit) cost     0 1,000,000  
Components of net periodic benefit cost [Abstract]          
Service cost     14,000,000 13,000,000 12,000,000
Interest cost     20,000,000 20,000,000 23,000,000
Expected return on plan assets     (37,000,000) (35,000,000) (32,000,000)
Amortization of: [Abstract]          
Prior service (credit) cost     1,000,000 1,000,000 0
Mark-to-market adjustment     36,000,000 (7,000,000) 52,000,000
Net periodic benefit cost     34,000,000 (8,000,000) 55,000,000
Other changes in plan assets and benefit obligations recognized in other comprehensive income [Abstract]          
Current year prior service credit     0 0 0
Amortization of: [Abstract]          
Prior service credit     1,000,000 1,000,000 0
Total     $ 1,000,000 $ 1,000,000 $ 0
Weighted-average assumptions used to determine benefit obligations for years ended [Abstract]          
Discount rate (in hundredths) 2.33%   2.35% 2.25% 2.33%
Rate of compensation increase (in hundredths) 2.94%   2.94% 2.95% 2.94%
Weighted-average assumptions used to determine net periodic cost for years ended [Abstract]          
Discount rate ( in hundredths)     2.25% 2.33% 3.26%
Discount rate for service costs     2.25% 2.33% 3.26%
Discount rate for interest costs     2.25% 2.33% 3.26%
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets     4.83% 5.02% 5.11%
Rate of compensation increase (in hundredths)     2.95% 2.94% 3.00%
Estimated future benefits payments [Abstract]          
2019     $ 22,000,000    
2020     25,000,000    
2021     24,000,000    
2022     25,000,000    
2023     27,000,000    
2024-2028     167,000,000    
Foreign Plan [Member] | Pension Plan [Member] | Other Investments [Member] | Fair Value, Inputs, Level 3 [Member]          
Change in plan assets [Roll Forward]          
Fair value of plan assets, beginning of year [8]     51,000,000 $ 44,000,000  
Defined benefit plan unrealized gains [8]     0 7,000,000  
Fair value of plan assets, end of year [8] $ 44,000,000   $ 51,000,000 $ 51,000,000 $ 44,000,000
Foreign Plan [Member] | Pension Plan [Member] | Private Equity Securities [Member]          
Defined Benefit Plan, Plan Assets, Allocations [Abstract]          
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage     23.00%    
Defined Benefit Plan, Actual Plan Asset Allocations (in hundredths)     19.00% 22.00%  
Foreign Plan [Member] | Pension Plan [Member] | Debt Securities [Member]          
Defined Benefit Plan, Plan Assets, Allocations [Abstract]          
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage     54.00%    
Defined Benefit Plan, Actual Plan Asset Allocations (in hundredths)     54.00% 55.00%  
Foreign Plan [Member] | Pension Plan [Member] | Real Estate [Member]          
Defined Benefit Plan, Plan Assets, Allocations [Abstract]          
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage     5.00%    
Defined Benefit Plan, Actual Plan Asset Allocations (in hundredths)     8.00% 7.00%  
Foreign Plan [Member] | Pension Plan [Member] | Other Investment Companies [Member]          
Defined Benefit Plan, Plan Assets, Allocations [Abstract]          
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage [1]     18.00%    
Defined Benefit Plan, Actual Plan Asset Allocations (in hundredths) [1]     19.00% 16.00%  
[1] U.S. primarily consists of private equity and natural resource and energy related limited partnership investments. Non-U.S. primarily consists of annuity contracts and alternative investmen
[2] Cash & Cash Equivalents: Funds generally invested in actively managed collective trust funds or interest bearing accounts.
[3] Debt: The fixed income securities are primarily valued upon a market approach, using matrix pricing and considering a security's relationship to other securities for which quoted prices in an active market may be available, or an income approach, converting future cash flows to a single present value amount. Inputs used in developing fair value estimates include reported trades, broker quotes, benchmark yields, and base spreads
[4] Return on assets during 2017, including returns on $200 million contributions made in 2016, resulted in the fair value of plan assets exceeding the accumulated benefit obligation for a significant U.S. pension plan.
[5] Investments Measured at Net Asset Value: The underlying debt and public equity investments in this category are generally held in common trust funds, which are either actively or passively managed investment vehicles, that are valued at the net asset value per unit/share multiplied by the number of units/shares held as of the measurement date. The other alternative investments in this category are valued under the practical expedient method which is based on the most recently reported net asset value provided by the management of each private investment fund, adjusted as appropriate, for any lag between the date of the financial reports and the measurement date.
[6] Public Equity - United States: Common stock equity securities which are primarily valued using a market approach based on the quoted market prices.
[7] Other Investments: Primarily consist of insurance contracts which are generally valued using a crediting rate that approximates market returns and investments in underlying securities whose market values are unobservable and determined using pricing models, discounted cash flow methodologies, or similar techniques.
[8] Primarily consists of insurance contracts.