Equity (Reconciliation of Ordinary Shares) (Details) - shares shares in Millions	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Ordinary shares
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (shares)	259.7	263.3
Shares issued under incentive plans, net	0.5
Repurchase of ordinary shares (shares)	(1.9)	(0.7)
Ending balance (shares)	258.3	263.6
Ordinary shares held in treasury, at cost
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (shares)	24.5
Shares issued under incentive plans, net	0.0
Repurchase of ordinary shares (shares)	0.0
Ending balance (shares)	24.5

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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- Definition

Number, before forfeiture, of shares issued under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

+ References

No definition available.

+ Details

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- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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