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Earnings Per Share (Schedule of Earnings Per Share, Basic and Diluted) (Details) - USD ($) shares in Millions, $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Numerator |  |
Net Income Available to Common Shareholders - Basic | $ 413.0 | $ 281.7
Dilutive effect of Equity Units | 0.5 | 0.0
Net Income Available to Common Shareholders - Diluted | $ 413.5 | $ 281.7
Denominator |  |
Basic Average Common Shares Outstanding | 406.0 | 392.7
Dilutive potential common shares |  |
Equity Units purchase contracts | 29.1 | 0.0
Equity Units purchase contract payment balance | 4.0 | 0.0
Shares contingently issuable under employee stock plans | 1.0 | 0.6
Shares restricted under stock plans | 0.4 | 0.3
ATM forward agreements | 0.9 | 0.3
Diluted Average Common Shares | 441.4 | 393.9

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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of contingently issuable shares. Contingently issuable shares are those shares that are issuable for little or no cash contingent on certain conditions being met. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 54 -URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e2603-109256 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 44 -URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e2062-109256 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e1828-109256 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e2600-109256 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e2597-109256 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 48 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e2538-109256 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 48 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e2538-109256 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 23 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e1757-109256 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 51 -URI http://asc.fasb.org/extlink&oid=125511455&loc=d3e2574-109256 + Details
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