Shareholders' Equity and Redeemable Non-controlling Interests, Shareholders' Equity (Tables)

3 Months Ended

Mar. 31, 2020

Shareholders Equity and Redeemable Non-controlling Interests Abstract [Abstract]

Schedule of share repurchase authorization [Table Text Block]

The following table summarizes our share repurchase activity for the periods presented:

Millions of dollars, except shares and per share amounts	Shares Repurchased	Average Purchase Price		Total Purchase Price, Including Commissions and Fees
For three months ended March 31, 2020:
September 2019 Share Repurchase Authorization	50,685	$	78.93	$	4
For three months ended March 31, 2019:
June 2018 Share Repurchase Authorization	5,648,900	$	86.38	$	488

Due to the timing of settlements, total cash paid for share repurchases for the three months ended March 31, 2020 and 2019 was $4 million and $512 million, respectively.

Schedule of changes in ordinary and treasury shares outstanding during the period [Table Text Block]

Ordinary Shares—The changes in the outstanding amounts of ordinary shares are as follows:

	Three Months Ended March 31,
	2020	2019
Ordinary shares outstanding:
Beginning balance	333,476,883	375,696,661
Share-based compensation	196,037	235,550
Employee stock purchase plan	81,215	42,792
Purchase of ordinary shares	(50,685)	(5,648,900)
Ending balance	333,703,450	370,326,103

Treasury Shares—The changes in the amounts of treasury shares held by the Company are as follows:

	Three Months Ended March 31,
	2020	2019
Ordinary shares held as treasury shares:
Beginning balance	6,568,745	24,513,619
Share-based compensation	(196,037)	(235,550)
Employee stock purchase plan	(81,215)	(42,792)
Purchase of ordinary shares	50,685	5,648,900
Ending balance	6,342,178	29,884,177

Schedule of accumulated other comprehensive income (loss) [Table Text Block]

Accumulated Other Comprehensive Income (Loss)—The components of, and after-tax changes in, Accumulated other comprehensive loss as of and for the three months ended March 31, 2020 and 2019 are presented in the following tables:

Millions of dollars	Financial Derivatives		Unrealized Gains on Available -for-Sale Debt Securities		Defined Benefit Pension and Other Postretirement Benefit Plans		Foreign Currency Translation Adjustments		Total
Balance – January 1, 2020	$	(200)	$	—	$	(711)	$	(873)	$	(1,784)
Other comprehensive loss before reclassifications	(388)		(3)		—		(195)		(586)
Tax (expense) benefit before reclassifications	88		1		—		(4)		85
Amounts reclassified from accumulated other comprehensive loss	(53)		—		14		—		(39)
Tax (expense) benefit	15		—		(4)		—		11
Net other comprehensive income (loss)	(338)		(2)		10		(199)		(529)
Balance – March 31, 2020	$	(538)	$	(2)	$	(701)	$	(1,072)	$	(2,313)

Millions of dollars	Financial Derivatives		Defined Benefit Pension and Other Postretirement Benefit Plans		Foreign Currency Translation Adjustments		Total
Balance – January 1, 2019	$	(68)	$	(442)	$	(853)	$	(1,363)
Other comprehensive loss before reclassifications	(19)		—		(7)		(26)
Tax (expense) benefit before reclassifications	4		—		(3)		1
Amounts reclassified from accumulated other comprehensive loss	(45)		7		—		(38)
Tax (expense) benefit	10		(2)		—		8
Net other comprehensive income (loss)	(50)		5		(10)		(55)
Balance – March 31, 2019	$	(118)	$	(437)	$	(863)	$	(1,418)

Reclassification out of accumulated other comprehensive income (loss) [Table Text Block]

The amounts reclassified out of each component of Accumulated other comprehensive loss are as follows: 

	Three Months Ended March 31,				Affected Line Item on the Consolidated Statements of Income
Millions of dollars	2020		2019
Reclassification adjustments for:
Financial derivatives:
Foreign currency	$	(53)	$	(39)	Other income, net
Commodities	—		(6)		Sales and other operating revenue
Commodities	—		4		Cost of sales
Interest rates	—		(4)		Interest expense
Income tax benefit	(15)		(10)		Provision for income taxes
Financial derivatives, net of tax	(38)		(35)
Amortization of defined pension items:
Prior service cost	1		—		Other income, net
Actuarial loss	13		7		Other income, net
Income tax expense	4		2		Provision for income taxes
Defined pension items, net of tax	10		5
Total reclassifications, before tax	(39)		(38)
Income tax benefit	(11)		(8)		Provision for income taxes
Total reclassifications, after tax	$	(28)	$	(30)	Amount included in net income