XML 26 R16.htm IDEA: XBRL DOCUMENT
v3.21.1

Earnings Per Share | 3 Months Ended
--- | ---
Mar. 31, 2021
Earnings Per Share [Abstract] |
Earnings Per Share | 7. Earnings Per Share The following table provides a reconciliation between basic and diluted earnings per share:
Millions, Except Per Share Amounts, |  |  |  |
for the Three Months Ended March 31, | 2021 | 2020
Net income | $ | 1,341 | $ | 1,474
Weighted-average number of shares outstanding: |  |  |  |
Basic |  | 667.6 |  | 684.3
Dilutive effect of stock options |  | 0.8 |  | 0.9
Dilutive effect of retention shares and units |  | 0.8 |  | 1.0
Diluted |  | 669.2 |  | 686.2
Earnings per share – basic | $ | 2.01 | $ | 2.15
Earnings per share – diluted | $ | 2.00 | $ | 2.15
Stock options excluded as their inclusion would be anti-dilutive |  | 0.3 |  | 0.7

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109243012&loc=SL65017193-207537 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3630-109257 + Details
Name: | us-gaap_EarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration