

($ in millions)	Unrealized Foreign Currency Translation Adjustments					Pension and Other Postretirement Benefit Adjustments, net of tax (c)					Unrealized Gain (Loss) on Derivatives, net of tax (d)					Accumulated Other Comprehensive Loss
January 1, 2019				($1,734	)				($568	)				$2					($2,300	)
Current year deferrals to AOCI (a)	31					—					—					31
Current year deferrals to AOCI, net of tax (b)	51					(8	)				—					43
Reclassifications from AOCI to net income	—					2					—					2
Period change				$82					($6	)				$—					$76
March 31, 2019				($1,652	)				($574	)				$2					($2,224	)

January 1, 2018				($1,567	)				($493	)				$3					($2,057	)
Current year deferrals to AOCI	189					—					—					189
Current year deferrals to AOCI, net of tax (b)	(45	)				14					(5	)				(36	)
Reclassifications from AOCI to net income	—					3					3					6
Period change				$144					$17					($2	)				$159
Reclassification from AOCI to Retained earnings - Adoption ASU 2018-02			(23		)			(84		)			—					(107		)
March 31, 2018				($1,446	)				($560	)				$1					($2,005	)

(a)

Except for income taxes of $6 million related to foreign currency impacts of certain unasserted earnings, unrealized foreign currency translation adjustments related to translation of foreign denominated balance sheets are not presented net of tax given that no deferred U.S. income taxes have been provided on undistributed earnings of non-U.S. subsidiaries because they are deemed to be reinvested for an indefinite period of time.


(b)	The tax cost related to unrealized foreign currency translation adjustments on tax inter-branch transactions and net investment hedges for the three months ended March 31, 2019 and 2018 was $17 million and $21 million, respectively.


(c)	The tax cost (benefit) related to the adjustment for pension and other postretirement benefits for the three months ended March 31, 2019 and 2018 was $1 million and ($1) million, respectively. Reclassifications from AOCI are included in the computation of net periodic benefit costs (See Note 11, "Pensions and Other Postretirement Benefits").


(d)	The tax cost (benefit) related to the changes in the unrealized gain (loss) on derivatives was insignificant for the three months ended March 31, 2019, and was ($1) million for the three months ended March 31, 2018. Reclassifications from AOCI are included in the gain recognized on cash flow hedges (See Note 13, "Financial Instruments, Hedging Activities and Fair Value Measurements").