Benefit Plans (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined benefit pension plans
Benefit obligation
Balance at the end of the period	$ 493	$ 548
US Plans
Benefit obligation
Balance at the beginning of the period	323	271
Service cost	8	7	7
Interest cost	11	12	13
Benefits paid	(14)	(15)
Actuarial (gain) loss	(36)	48
Business Combinations/Transfers	1
Balance at the end of the period	293	323	271
Fair value of plan assets
Balance at the beginning of the period	257	222
Actual return on plan assets	41	27
Employer contributions	13	23
Benefits paid	(14)	(15)
Balance at the end of the period	297	257	222
Funded status	4	(66)
Amounts recognized in the Consolidated Balance Sheets
Non-current asset	16
Current liabilities	(1)	(1)
Non-current liabilities	(11)	(65)
Net asset (liability) recognized	4	(66)
Amounts recognized in Accumulated Other Comprehensive Loss, excluding tax effects, that have not yet been recognized as components of net periodic benefit cost
Net actuarial loss	7	67
Net amount recognized	7	67
Information about plan obligations and assets for plans with an accumulated benefit obligation in excess of plan assets
Projected benefit obligation	10	323
Accumulated benefit obligation	8	314
Fair value of plan assets		257
Components of Net Periodic Benefit Costs
Service cost	8	7	7
Interest cost	11	12	13
Expected return on plan assets	(18)	(16)	(15)
Amortization of actuarial loss	2	1	1
Settlement/curtailment			2
Net periodic benefit cost	3	4	8
Amount related to the amortization of the entity's accumulated actuarial loss included in accumulated other comprehensive loss that will be recognized in net pension expense in next fiscal year	0.5
Amounts recorded in Other Comprehensive Income and net periodic benefit cost
Net actuarial gain	(58)
Amortization of actuarial loss	(2)
Total recorded in other comprehensive income	(60)
Net periodic benefit cost	3	4	8
Total recorded in other comprehensive income and net periodic benefit cost	(57)
Weighted average assumptions used to determine the company's obligations
Discount rate (as a percent)	4.60%	3.60%
Rate of compensation increase (as a percent)	4.22%	4.19%
Weighted average assumptions used to determine the company's net periodic benefit cost
Discount rate (as a percent)	3.60%	4.50%	5.35%
Expected long-term return on plan assets (as a percent)	7.25%	7.25%	7.25%
Rate of compensation increase (as a percent)	4.19%	4.19%	2.75%
US Plans | Minimum
Employee benefit plans
Percent of base salary, bonus and overtime credited to participating employees' accounts by the Company	3.00%
US Plans | Maximum
Employee benefit plans
Percent of base salary, bonus and overtime credited to participating employees' accounts by the Company	10.00%
Non-US Plans
Benefit obligation
Balance at the beginning of the period	272	216
Service cost	9	8	5
Interest cost	12	13	15
Benefits paid	(12)	(12)
Actuarial (gain) loss	(15)	34
Business Combinations/Transfers		12
Curtailment/settlement	(2)	(4)
Foreign currency translation	(14)	5
Balance at the end of the period	250	272	216
Fair value of plan assets
Balance at the beginning of the period	189	156
Actual return on plan assets	16	12
Employer contributions	43	15
Benefits paid	(12)	(12)
Business Combinations/Transfers		15
Foreign currency translation	(13)	3
Balance at the end of the period	223	189	156
Funded status	(27)	(83)
Amounts recognized in the Consolidated Balance Sheets
Non-current asset	26	1
Current liabilities	(3)	(3)
Non-current liabilities	(50)	(81)
Net asset (liability) recognized	(27)	(83)
Amounts recognized in Accumulated Other Comprehensive Loss, excluding tax effects, that have not yet been recognized as components of net periodic benefit cost
Net actuarial loss	59	92
Transition obligation	2	2
Net amount recognized	61	94
Information about plan obligations and assets for plans with an accumulated benefit obligation in excess of plan assets
Projected benefit obligation	52	262
Accumulated benefit obligation	42	227
Fair value of plan assets	3	178
Components of Net Periodic Benefit Costs
Service cost	9	8	5
Interest cost	12	13	15
Expected return on plan assets	(12)	(13)	(11)
Amortization of actuarial loss	5	4	2
Amortization of transition obligation		1	1
Settlement/curtailment		1
Net periodic benefit cost	14	14	12
Amount related to the amortization of the entity's accumulated actuarial loss included in accumulated other comprehensive loss that will be recognized in net pension expense in next fiscal year	3.0
Amount related to the amortization of transition obligation included in accumulated other comprehensive loss that will be recognized in net pension expense in next fiscal year	0.3
Amounts recorded in Other Comprehensive Income and net periodic benefit cost
Net actuarial gain	(23)
Amortization of actuarial loss	(5)
Foreign currency translation	(5)
Total recorded in other comprehensive income	(33)
Net periodic benefit cost	14	14	12
Total recorded in other comprehensive income and net periodic benefit cost	$ (19)
Weighted average assumptions used to determine the company's obligations
Discount rate (as a percent)	5.60%	4.85%
Rate of compensation increase (as a percent)	4.39%	4.35%
Weighted average assumptions used to determine the company's net periodic benefit cost
Discount rate (as a percent)	4.88%	5.68%	5.73%
Expected long-term return on plan assets (as a percent)	6.69%	6.81%	6.73%
Rate of compensation increase (as a percent)	4.35%	4.51%	3.79%
Canadian plan
Weighted average assumptions used to determine the company's net periodic benefit cost
Expected long-term return on plan assets (as a percent)	6.10%
US Postretirement Benefit Plans
Employee benefit plans
Age of employees upon attaining which they can avail benefits accrued during their employment	65 years
Term of treasury notes used to calculate interest on accrued benefits	5 years