Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2021

Equity [Abstract]

Schedule of Repurchase Agreements

The following table summarizes the Company’s share repurchase activity (in millions, except per share data):

	Years Ended December 31
	2021		2020
Shares repurchased	12.4		8.5
Average price per share	$	286.82	$	206.28
Costs recorded to retained earnings
Total repurchase cost	$	3,543	$	1,761
Additional associated costs	—		2
Total costs recorded to retained earnings	$	3,543	$	1,763

Schedule of Components of Weighted Average Number of Shares Outstanding

Weighted average ordinary shares outstanding are as follows (in millions):

	Years Ended December 31
	2021	2020	2019
Basic weighted average ordinary shares outstanding	224.7	231.9	238.6
Dilutive effect of potentially issuable shares	1.4	1.2	2.0
Diluted weighted average ordinary shares outstanding	226.1	233.1	240.6

Components of Accumulated Other Comprehensive Loss, Net of Related Tax

Changes in Accumulated other comprehensive loss by component, net of related tax, are as follows (in millions):

	Change in Fair Value of Financial Instruments (1)		Foreign Currency Translation Adjustments		Postretirement Benefit Obligation (2)		Total
Balance at December 31, 2018	(15)		(1,319)		(2,575)		(3,909)
Other comprehensive income (loss) before reclassifications:
Other comprehensive income (loss) before reclassifications	(10)		15		(287)		(282)
Tax benefit (expense)	1		(1)		58		58
Other comprehensive income (loss) before reclassifications, net	(9)		14		(229)		(224)
Amounts reclassified from accumulated other comprehensive income (loss):
Amounts reclassified from accumulated other comprehensive income	14		—		109		123
Tax expense	(2)		—		(21)		(23)
Amounts reclassified from accumulated other comprehensive income, net (3)	12		—		88		100
Net current period other comprehensive income (loss)	3		14		(141)		(124)
Balance at December 31, 2019	(12)		(1,305)		(2,716)		(4,033)
Other comprehensive income (loss) before reclassifications:
Other comprehensive income (loss) before reclassifications	1		258		(255)		4
Tax benefit	—		2		60		62
Other comprehensive income (loss) before reclassifications, net	1		260		(195)		66
Amounts reclassified from accumulated other comprehensive income (loss):
Amounts reclassified from accumulated other comprehensive income	15		—		125		140
Tax expense	(3)		—		(31)		(34)
Amounts reclassified from accumulated other comprehensive income, net (3)	12		—		94		106
Net current period other comprehensive income (loss)	13		260		(101)		172
Balance at December 31, 2020	$	1	$	(1,045)	$	(2,817)	$	(3,861)
Other comprehensive income (loss) before reclassifications:
Other comprehensive income (loss) before reclassifications	—		(290)		227		(63)
Tax benefit (expense)	—		2		(58)		(56)
Other comprehensive income (loss) before reclassifications, net	—		(288)		169		(119)
Amounts reclassified from accumulated other comprehensive income (loss):
Amounts reclassified from accumulated other comprehensive income	2		—		142		144
Tax expense	(1)		—		(34)		(35)
Amounts reclassified from accumulated other comprehensive income, net (3)	1		—		108		109
Net current period other comprehensive income (loss)	1		(288)		277		(10)
Balance at December 31, 2021	$	2	$	(1,333)	$	(2,540)	$	(3,871)

(1)Reclassifications from this category included in Accumulated other comprehensive loss are recorded in Total revenue, Interest expense, and Compensation and benefits in the Consolidated Statements of Income. Refer to Note 13 “Derivatives and Hedging” for further information regarding the Company’s derivative and hedging activity.

(2)Reclassifications from this category included in Accumulated other comprehensive loss are recorded in Other income (expense) in the Consolidated Statements of Income.

(3)It is the Company’s policy to release income tax effects from Accumulated other comprehensive loss using the portfolio approach.