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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, 2016 |  | $ 561 | $ 842 | $ 12,388 | $ (5,093) | $ (2,506) | $ 80
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Change in accrued stock compensation costs |  |  | 26 |  |  |  |
Issuance of shares under stock compensation plans and employee stock purchase plans |  |  | (82) |  |  | 255 |
Cumulative effect of adoption of new revenue recognition standard and other new accounting standards |  |  |  | 0 | 0 |  |
Cumulative effect of adoption of new revenue recognition standard and other new accounting standards | Accounting Standards Update 2014-09 |  |  |  | 0 |  |  |
Net income | $ 1,482 |  |  | 1,463 |  |  | 19
Deconsolidation of subsidiary |  |  |  |  |  |  | 0
Dividend equivalents declared – (per share amounts: $1.58 in 2018 and $1.43 in 2017) |  |  |  | (4) |  |  |
Dividends declared – (per share amounts: $1.58 in 2018 and $1.43 in 2017) |  |  |  | (734) |  |  |
Other comprehensive (loss) income, net of tax | 533 |  |  |  | 533 |  |
Purchase of treasury shares |  |  |  |  |  | (600) |
Distributions and other changes |  |  |  |  |  |  | (14)
Other |  |  | 3 |  |  |  |
Balance, end of period at Sep. 30, 2017 | 7,131 |  | 783 | 13,113 | (4,560) | (2,851) | 85
Balance, beginning of year at Dec. 31, 2017 | 7,442 | $ 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 revenue recognition standard and other new accounting standards |  |  |  | 0 | (14) |  |
Cumulative effect of adoption of new revenue recognition standard and other new accounting standards | Accounting Standards Update 2014-09 |  |  |  | 364 |  |  |
Net income | 1,511 |  |  | 1,497 |  |  | 14
Net income | Accounting Standards Update 2014-09 | 1,511 |  |  |  |  |  |
Deconsolidation of subsidiary |  |  |  |  |  |  | 0
Dividend equivalents declared – (per share amounts: $1.58 in 2018 and $1.43 in 2017) |  |  |  | (5) |  |  |
Dividends declared – (per share amounts: $1.58 in 2018 and $1.43 in 2017) |  |  |  | (800) |  |  |
Other comprehensive (loss) income, net of tax | (431) |  |  |  | (431) |  |
Purchase of treasury shares |  |  |  |  |  | (675) |
Distributions and other changes |  |  |  |  |  |  | (12)
Other |  |  | 0 |  |  |  |
Balance, end of period at Sep. 30, 2018 | 7,538 |  | $ 771 | $ 14,196 | $ (4,488) | $ (3,587) | $ 85
Balance, end of period (Accounting Standards Update 2014-09) at Sep. 30, 2018 | $ 7,538 |  |  |  |  |  |

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