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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of stock-based compensation cost |
|  | Third Quarter |  | First Nine Months
|  | 2021 |  | 2020 |  | 2021 |  | 2020
|  | ($ in millions)
Stock-based compensation expense |  | $ | 14 |  |  | $ | 13 |  |  | $ | 46 |  |  | $ | 25 |
Total tax benefit |  | 3 |  |  | 10 |  |  | 28 |  |  | 39 |
Schedule of LTIP awards | During 2021, we granted stock options, restricted stock units (RSUs) and performance share units (PSUs) pursuant to the Long-Term Incentive Plan (LTIP), as follows:
|  | Third Quarter |  | First Nine Months
|  | Granted |  | Weighted-Average Grant-Date Fair Value |  | Granted |  | Weighted-Average Grant-Date Fair Value
Stock options |  | — |  |  | $ | — |  |  | 42,770 |  |  | $ | 62.49 |
RSUs |  | 2,490 |  |  | 258.14 |  |  | 179,345 |  |  | 239.01 |
PSUs |  | — |  |  | — |  |  | 50,060 |  |  | 240.69 |
Schedule of cash proceeds received from share-based payment awards |
|  | Third Quarter |  | First Nine Months
|  | 2021 |  | 2020 |  | 2021 |  | 2020
|  | ($ in millions)
Options exercised |  | 22,502 |  | 313,358 |  |  | 363,982 |  |  | 998,996 |
Cash received upon exercise |  | $ | 2 |  |  | $ | 27 |  |  | $ | 33 |  |  | $ | 82 |
Related tax benefit realized |  | 1 |  |  | 8 |  |  | 13 |  |  | 24 |
Restricted Stock Units (RSUs) |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of share-based compensation, activity |
|  | Third Quarter |  | First Nine Months
|  | 2021 |  | 2020 |  | 2021 |  | 2020
|  | ($ in millions)
RSUs vested |  | 1,100 |  |  | 1,635 |  |  | 260,227 |  |  | 203,934 |
Common Stock issued net of tax withholding |  | 761 |  |  | 1,630 |  |  | 184,272 |  |  | 145,342 |
Related tax benefit realized |  | $ | — |  |  | $ | — |  |  | $ | 7 |  |  | $ | 4 |
Performance Share Units |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Schedule of share-based compensation, activity |
|  | First Nine Months
|  | 2021 |  | 2020
|  | ($ in millions)
PSUs earned |  | 78,727 |  |  | 235,935
Common Stock issued net of tax withholding |  | 49,967 |  |  | 156,450
Related tax benefit realized |  | $ | 1 |  |  | $ | 7 |

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- Definition Tabular disclosure of cash received from exercise of stock options and similar instruments granted under share-based payment arrangements and tax benefit from exercise of stock options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=120381028&loc=SL79508275-113901 + Details
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- Definition Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of activity for award under share-based payment arrangement. Includes, but is not limited to, outstanding award at beginning and end of year, granted, exercised, forfeited, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the weighted-average grant-date fair value of equity options or other equity instruments granted during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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