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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, 2015 |  | $ 561 | $ 861 | $ 11,302 | $ (4,220) | $ (1,991) | $ 89
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Change in accrued stock compensation costs |  |  | 14 |  |  |  |
Issuance of shares under stock compensation plans and employee stock purchase plans and related tax impact in 2016 |  |  | (63) |  |  | 250 |
Other |  |  | 0 |  |  |  |
Net income | $ 1,354 |  |  | 1,332 |  |  | 22
Dividend equivalents declared – (per share amounts: $1.43 in 2017 and $1.30 in 2016) |  |  |  | (5) |  |  |
Dividends declared – (per share amounts: $1.43 in 2017 and $1.30 in 2016) |  |  |  | (676) |  |  |
Other comprehensive income (loss), net of tax | (69) |  |  |  | (69) |  |
Purchase of treasury shares |  |  |  |  |  | (625) |
Deconsolidation of subsidiary |  |  |  |  |  |  | (14)
Distributions and other changes |  |  |  |  |  |  | (14)
Balance, end of period at Sep. 30, 2016 | 6,754 |  | 812 | 11,953 | (4,289) | (2,366) | 83
Balance, beginning of year at Dec. 31, 2016 | 6,272 | $ 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 and related tax impact in 2016 |  |  | (82) |  |  | 255 |
Other |  |  | (3) |  |  |  |
Net income | 1,482 |  |  | 1,463 |  |  | 19
Dividend equivalents declared – (per share amounts: $1.43 in 2017 and $1.30 in 2016) |  |  |  | (4) |  |  |
Dividends declared – (per share amounts: $1.43 in 2017 and $1.30 in 2016) |  |  |  | (734) |  |  |
Other comprehensive income (loss), net of tax | 533 |  |  |  | 533 |  |
Purchase of treasury shares |  |  |  |  |  | (600) |
Deconsolidation of subsidiary |  |  |  |  |  |  | 0
Distributions and other changes |  |  |  |  |  |  | (14)
Balance, end of period at Sep. 30, 2017 | $ 7,131 |  | $ 783 | $ 13,113 | $ (4,560) | $ (2,851) | $ 85

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