Shareholders' Equity (Summary of Share Repurchases) (Details) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
Mar. 31, 2022 USD ($) $ / shares shares
Shareholders' Equity [Abstract]
Total number of shares purchased (in millions) \| shares	1.3
Average price paid per share \| $ / shares	$ 332.00
Total price paid (in millions) \| $	$ 431.6

Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

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 https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.3-04)
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration