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Condensed Consolidated Statement of Comprehensive Income - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Statement of Comprehensive Income [Abstract] |  |  |  |
Net Income from operations | $ 1,349 | $ 1,434 | $ 4,856 | $ 4,434
Foreign currency translation adjustments |  |  |  |
Foreign currency translation adjustments arising during period | (185) | 514 | (378) | 909
Less: Reclassification adjustments for loss on sale of an investment in a foreign entity recognized in Other income, net | 0 | 3 | 3 | 3
Foreign currency translation adjustments | (185) | 511 | (381) | 906
Tax (benefit) expense | (4) | 0 | (60) | 0
Foreign Currency Translation Adjustments, Net of Tax | (181) | 511 | (321) | 906
Pension and post-retirement benefit plans |  |  |  |
Pension and post-retirement benefit plans adjustments during the period | (17) | (50) | 9 | (54)
Amortization of actuarial loss, prior service cost and transition obligation | 86 | 132 | 262 | 395
Total pension and post-retirement benefit plans, before tax | (69) | (82) | (271) | (341)
Tax expense | (15) | (53) | (64) | (149)
Pension and Other Postretirement Benefit Plans, Net of Tax | (54) | (29) | (207) | (192)
Unrealized gain (loss) on available-for-sale securities |  |  |  |
Unrealized holding gain (loss) arising during period | 0 | 19 | 0 | 17
Reclassification adjustments for gain included in Other income, net | 0 | 138 | 0 | 545
Other Comprehensive Income (Loss), ASU 2016-01 adoption impact on Securities Arising During Period | 0 | 0 | (5) | 0
Total unrealized gain (loss) on available for-sale securities, before tax | 0 | (119) | (5) | (528)
Tax expense (benefit) | 0 | (43) | 0 | (199)
Total unrealized gain (loss) on available for-sale securities, net of tax | 0 | (76) | (5) | (329)
Change in unrealized cash flow hedging |  |  |  |
Unrealized cash flow hedging (loss) gain arising during the period | 95 | 310 | (105) | 440
Gain (Loss) reclassified into Product Sales | (2) | 24 | 26 | 14
Total unrealized (loss) gain on cash-flow hedging, before tax | 97 | 286 | (131) | 426
Tax expense (benefit) | 28 | 73 | (28) | 105
Total unrealized gain (loss) on cash-flow hedging, net of tax | 69 | 213 | (103) | 321
Other comprehensive income (loss), net of tax | (58) | 677 | (222) | 1,090
Comprehensive income | 1,291 | 2,111 | 4,634 | 5,524
Less: Comprehensive income attributable to noncontrolling interest | 92 | 144 | 249 | 362
Comprehensive income attributable to common shareowners | $ 1,199 | $ 1,967 | $ 4,385 | $ 5,162

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