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Consolidated Statements of Equity (Unaudited) - USD ($) $ in Millions | Total | Common Stock | Additional Paid-in Capital | Retained Earnings | Accumulated Other Comprehensive Loss | Treasury Shares | Non-Controlling Interests
--- | --- | --- | --- | --- | --- | --- | ---
Balance, beginning of year at Dec. 31, 2017 |  | $ 561 | $ 784 | $ 13,140 | $ (4,043) | $ (3,083) | $ 83
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Change in accrued stock compensation costs |  |  | 20 |  |  |  |
Issuance of shares under stock compensation plans and employee stock purchase plans |  |  | (33) |  |  | 171 |
Cumulative effect of adoption of new accounting standards | Accounting Standards Update 2014-09 |  |  |  | 364 |  |  |
Cumulative effect of adoption of new accounting standards | Accounting Standards Update 2016-01 |  |  |  |  | (14) |  |
Net income attributable to the Company | $ 1,511 |  |  | 1,497 |  |  | 14
Dividend equivalents declared |  |  |  | (5) |  |  |
Dividends declared |  |  |  | (800) |  |  |
Other comprehensive loss, net of tax | (431) |  |  |  | (431) |  |
Purchase of treasury shares |  |  |  |  |  | (675) |
Net non-controlling interests (disposed) acquired |  |  |  |  |  |  | 0
Distributions and other changes |  |  |  |  |  |  | (12)
Balance, end of period at Sep. 30, 2018 | $ 7,538 |  | 771 | 14,196 | (4,488) | (3,587) | 85
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Dividends declared per share (in dollars per share) | $ 1.580 |  |  |  |  |  |
Balance, beginning of year at Jun. 30, 2018 |  | 561 | 732 | 14,131 | (4,265) | (3,443) | 81
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Change in accrued stock compensation costs |  |  | 46 |  |  |  |
Issuance of shares under stock compensation plans and employee stock purchase plans |  |  | (7) |  |  | 31 |
Cumulative effect of adoption of new accounting standards | Accounting Standards Update 2014-09 |  |  |  | 0 |  |  |
Cumulative effect of adoption of new accounting standards | Accounting Standards Update 2016-01 |  |  |  |  | 0 |  |
Net income attributable to the Company | $ 279 |  |  | 276 |  |  | 3
Dividend equivalents declared |  |  |  | (2) |  |  |
Dividends declared |  |  |  | (209) |  |  |
Other comprehensive loss, net of tax | (223) |  |  |  | (223) |  |
Purchase of treasury shares |  |  |  |  |  | (175) |
Net non-controlling interests (disposed) acquired |  |  |  |  |  |  | 0
Distributions and other changes |  |  |  |  |  |  | 1
Balance, end of period at Sep. 30, 2018 | $ 7,538 |  | 771 | 14,196 | (4,488) | (3,587) | 85
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Dividends declared per share (in dollars per share) | $ 0.415 |  |  |  |  |  |
Balance, beginning of year at Dec. 31, 2018 | $ 7,584 | 561 | 817 | 14,347 | (4,647) | (3,567) | 73
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Change in accrued stock compensation costs |  |  | 65 |  |  |  |
Issuance of shares under stock compensation plans and employee stock purchase plans |  |  | (5) |  |  | 29 |
Cumulative effect of adoption of new accounting standards | Accounting Standards Update 2014-09 |  |  |  | 0 |  |  |
Cumulative effect of adoption of new accounting standards | Accounting Standards Update 2016-01 |  |  |  |  | 0 |  |
Net income attributable to the Company | 1,377 |  |  | 1,351 |  |  | 3
Dividend equivalents declared |  |  |  | (2) |  |  |
Dividends declared |  |  |  | (231) |  |  |
Other comprehensive loss, net of tax | (284) |  |  |  | (284) |  |
Purchase of treasury shares |  |  |  |  |  | (200) |
Net non-controlling interests (disposed) acquired |  |  |  |  |  |  | (100)
Distributions and other changes |  |  |  |  |  |  | 2
Balance, end of period at Sep. 30, 2019 | $ 7,797 |  | 796 | 14,811 | (4,931) | (3,617) | 177
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Dividends declared per share (in dollars per share) | $ 1.740 |  |  |  |  |  |
Balance, beginning of year at Jun. 30, 2019 |  | $ 561 | 736 | 14,741 | (4,527) | (3,446) | 272
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Change in accrued stock compensation costs |  |  | 23 |  |  |  |
Issuance of shares under stock compensation plans and employee stock purchase plans |  |  | (44) |  |  | 250 |
Cumulative effect of adoption of new accounting standards | Accounting Standards Update 2014-09 |  |  |  | 0 |  |  |
Cumulative effect of adoption of new accounting standards | Accounting Standards Update 2016-01 |  |  |  |  | 0 |  |
Net income attributable to the Company | $ 306 |  |  | 303 |  |  | 26
Dividend equivalents declared |  |  |  | (6) |  |  |
Dividends declared |  |  |  | (881) |  |  |
Other comprehensive loss, net of tax | (404) |  |  |  | (404) |  |
Purchase of treasury shares |  |  |  |  |  | (300) |
Net non-controlling interests (disposed) acquired |  |  |  |  |  |  | 95
Distributions and other changes |  |  |  |  |  |  | (17)
Balance, end of period at Sep. 30, 2019 | $ 7,797 |  | $ 796 | $ 14,811 | $ (4,931) | $ (3,617) | $ 177
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Dividends declared per share (in dollars per share) | $ 0.455 |  |  |  |  |  |

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