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Share repurchase program (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
	Mar. 01, 2022	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Feb. 21, 2023	Aug. 04, 2021
Equity, Class of Treasury Stock [Line Items]
Shares acquired (in shares)		829,718		829,718
Foreign currency loss				$ 305	$ 134
August 4, 2021 Board Authorized Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Aggregate consideration amount of repurchase program							$ 150
March 1, 2022 Board Authorized Increase
Equity, Class of Treasury Stock [Line Items]
Aggregate consideration amount of repurchase program	$ 150
Stock repurchase program authorized amount increase	300
February 2023 Stock Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Aggregate consideration amount of repurchase program		$ 479		$ 479		$ 900
Share Repurchase Programs
Equity, Class of Treasury Stock [Line Items]
Shares acquired (in shares)		456,900		456,900
August 30, 2020 Board Authorized Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Foreign currency loss		$ 157	$ 28	$ 213	$ 63
Maximum | March 1, 2022 Board Authorized Increase
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program aggregate consideration	$ 450

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Amount before tax of foreign currency transaction realized and unrealized loss recognized in the income statement.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 830
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481956/830-20-45-1

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Amount of stock repurchase plan authorized.

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Number of previously issued common shares repurchased by the issuing entity and held in treasury.

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