Pfizer Inc. reports the following footnote disclosure in its 2018 Form 10-K. The following table provides the components of Income from continuing operations before provision (benefit) for taxes on income:

Year Ended December 31, $ millions	2018	2017	2016
United States	$(4,491)	$(7,017)	$(8,705)
International	16,614	19,568	17,224
Income from continuing operations before provision for taxes	$12,123	$12,551	$8,519

The following table provides the components of Provision (benefit) for taxes on income based on the location of the taxing authorities:

$ millions	2018	2017	2016
United States
Current income taxes:
Federal	$668	$1,267	$342
State and local	9	46	(53)
Deferred income taxes:
Federal	$(1,696)	$(2,105)	$(427)
State and local	16	(310)	(108)
Total U.S. tax provision	$(1,003)	$(1,102)	$(246)
TCJA(a)
Current income taxes	$(3,096)	$13,398	$-
Deferred income taxes	2,488	$(24,271)	0
Total TCJA tax provision	$(608)	$(10,873)	$-
International
Current income taxes	$2,888	$2,763	$1,563
Deferred income taxes	(569)	(43)	(179)
Total international tax provision	$2,319	$2,720	$1,384

(a) In the fourth quarter of 2017, we recorded an estimate of certain tax effects of the TCJA, including (i) the impact on deferred tax assets and liabilities from the reduction in the U.S. Federal corporate tax rate from 35% to 21%, (ii) the impact on valuation allowances and other state income tax considerations, (iii) the $15.2 billion repatriation tax liability on accumulated post-1986 foreign earnings for which we plan to elect, with the filing of our 2018 U.S. Federal Consolidated Income Tax Return, payment over eight years through 2026 that is reported in Other taxes payable in our consolidated balance sheet as of December 31, 2017 and (iv) deferred taxes on basis differences expected to give rise to future taxes on global intangible low-taxed income. As a result of the TCJA, in the fourth quarter of 2017, we reversed an estimate of the deferred taxes that are no longer expected to be needed due to the change to the territorial tax system.

Required a. What is the amount of income tax expense reported by Pfizer for each year? What amount is current versus deferred?

	2018	2017	2016
Current tax	Answer	Answer	Answer
Deferred tax	Answer	Answer	Answer
Total tax	Answer	Answer	Answer

b. What is Pfizers effective (average) tax rate for each year? Note: Round your percentage to one decimal place (for example, enter 6.7% for 6.6655%).

	2018	2017	2016
Effective tax rate	Answer	Answer	Answer

c. Use the pretax information to determine the effective tax rate for U.S. operations for each year. Note: Round your percentage to one decimal place (for example, enter 6.7% for 6.6655%).

	2018	2017	2016
Effective tax rate	Answer	Answer	Answer

d. The footnote includes amounts related to the TCJA of 2017. What was the effect on the companys tax expense in 2017 and 2018 due to the TCJA? Note: Do not use a negative sign with your answer. 2017 effect: $Answer Answerreduction inincrease of tax expense 2018 effect: $Answer Answerreduction inincrease of tax expense