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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Millions | Common Stock [Member] | Additional Paid-In Capital [Member] | Retained Earnings [Member] Cumulative Effect, Period of Adoption, Adjustment [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss) [Member] Cumulative Effect, Period of Adoption, Adjustment [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Treasury Stock [Member] | Noncontrolling Interests [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2017 | $ 6 | $ 4,933 |  | $ 8,588 |  | $ 8 | $ (7,516) | $ 23 |  | $ 6,042
Beginning balance, shares at Dec. 31, 2017 | 630,282 |  |  |  |  |  | (196,964) |  |  |
Equity roll forward |  |  |  |  |  |  |  |  |  |
Consolidated net income |  |  |  | 1,925 |  |  |  | (2) |  | 1,923
Other comprehensive income (loss), net of tax |  |  |  |  |  | (90) |  |  |  | (90)
Cash dividends declared |  |  |  | (802) |  |  |  |  |  | (802)
Equity-based compensation transactions, net of tax |  | 60 |  | 1 |  |  | $ 90 |  |  | 151
Equity-based compensation transactions, net of tax, shares |  |  |  |  |  |  | 2,345 |  |  |
Common stock repurchase program |  |  |  |  |  |  | $ (1,008) |  |  | $ (1,008)
Common stock repurchase program, shares |  |  |  |  |  |  | (11,673) |  |  | (11,673,000)
Divestiture of noncontrolling interest |  |  |  |  |  |  |  | (19) |  | $ (19)
Other, net |  |  |  |  |  |  |  | (1) |  | (1)
Other, net, shares |  |  |  |  |  |  | (7) |  |  |
Ending balance at Dec. 31, 2018 | $ 6 | 4,993 | $ 85 | 9,797 | $ (5) | (87) | $ (8,434) | 1 | $ 80 | 6,276
Ending balance, shares at Dec. 31, 2018 | 630,282 |  |  |  |  |  | (206,299) |  |  |
Equity roll forward |  |  |  |  |  |  |  |  |  |
Consolidated net income |  |  |  | 1,670 |  |  |  | 1 |  | 1,671
Other comprehensive income (loss), net of tax |  |  |  |  |  | 79 |  |  |  | 79
Cash dividends declared |  |  |  | (876) |  |  |  |  |  | (876)
Equity-based compensation transactions, net of tax |  | 56 |  | 1 |  |  | $ 107 |  |  | 164
Equity-based compensation transactions, net of tax, shares |  |  |  |  |  |  | 2,585 |  |  |
Common stock repurchase program |  |  |  |  |  |  | $ (244) |  |  | $ (244)
Common stock repurchase program, shares |  |  |  |  |  |  | (2,247) |  |  | (2,247,000)
Other, net, shares |  |  |  |  |  |  | 5 |  |  |
Ending balance at Dec. 31, 2019 | $ 6 | 5,049 | $ (2) | 10,592 |  | (8) | $ (8,571) | 2 | $ (2) | $ 7,070
Ending balance, shares at Dec. 31, 2019 | 630,282 |  |  |  |  |  | (205,956) |  |  |
Equity roll forward |  |  |  |  |  |  |  |  |  |
Consolidated net income |  |  |  | 1,496 |  |  |  |  |  | 1,496
Other comprehensive income (loss), net of tax |  |  |  |  |  | 47 |  |  |  | 47
Cash dividends declared |  |  |  | (927) |  |  |  |  |  | (927)
Equity-based compensation transactions, net of tax |  | 80 |  | 1 |  |  | $ 91 |  |  | 172
Equity-based compensation transactions, net of tax, shares |  |  |  |  |  |  | 2,158 |  |  |
Common stock repurchase program |  |  |  |  |  |  | $ (402) |  |  | $ (402)
Common stock repurchase program, shares |  |  |  |  |  |  | (3,687) |  |  | (3,687,000)
Other, net |  |  |  | (1) |  |  | $ 1 |  |  |
Other, net, shares |  |  |  |  |  |  | 4 |  |  |
Ending balance at Dec. 31, 2020 | $ 6 | $ 5,129 |  | $ 11,159 |  | $ 39 | $ (8,881) | $ 2 |  | $ 7,454
Ending balance, shares at Dec. 31, 2020 | 630,282 |  |  |  |  |  | (207,481) |  |  |

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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=109259400&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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- Definition Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method. + 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=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 3: 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 + Details
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