Retirement Plans (Tables)

12 Months Ended

Dec. 31, 2015

Compensation and Retirement Disclosure [Abstract]

Schedule of Assumptions Used [Table Text Block]

Certain weighted-average actuarial assumptions used to determine benefit obligations of our international pension plans at December 31 were as follows:

	2015	2014
Discount rate	4.2%	4.1%
Rate of compensation increase	5.4%	5.3%

Certain weighted-average actuarial assumptions used to determine net periodic benefit cost of our international pension plans for the years ended December 31 were as follows:

	2015	2014	2013
Discount rate	4.1%	4.8%	4.8%
Expected long-term return on plan assets	5.9%	6.4%	6.4%
Rate of compensation increase	5.3%	5.4%	5.5%

Schedule of Expected Benefit Payments [Table Text Block]

The following table presents expected benefit payments over the next 10 years for our international pension plans.

Millions of dollars
2016	$	51
2017	37
2018	39
2019	44
2020	44
Years 2021 - 2025	280

Schedule of Net Benefit Costs [Table Text Block]

The following table presents additional information about our international pension plans.

	December 31
Millions of dollars	2015		2014
Amounts recognized on the Consolidated Balance Sheets
Accrued employee compensation and benefits	$	20	$	22
Employee compensation and benefits	155		325
Pension plans in which projected benefit obligation exceeded plan assets
Projected benefit obligation	$	1,042	$	1,232
Fair value of plan assets	867		884
Pension plans in which accumulated benefit obligation exceeded plan assets
Accumulated benefit obligation	$	964	$	1,120
Fair value of plan assets	846		860

Schedule of Allocation of Plan Assets [Table Text Block]

The following table sets forth by level within the fair value hierarchy the fair value of assets held by our international pension plans.

Millions of dollars	Level 1		Level 2		Level 3		Total
Cash and equivalents	$	—	$	46	$	—	$	46
Common/collective trust funds
Equity funds (a)	—		209		—		209
Bond funds (b)	—		212		38		250
Alternatives funds (c)	—		42		46		88
Real estate funds (d)	—		231		—		231
Other assets	2		19		27		48
Fair value of plan assets at December 31, 2015	$	2	$	759	$	111	$	872
Common/collective trust funds
Equity funds (a)	$	—	$	320	$	—	$	320
Bond funds (b)	—		197		70		267
Alternatives fund (c)	—		148		—		148
Real estate funds (d)	—		86		—		86
Other assets	6		33		31		70
Fair value of plan assets at December 31, 2014	$	6	$	784	$	101	$	891