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Accumulated other comprehensive income (loss), net of tax (Tables)
 12 Months Ended
Mar. 31, 2020
Changes in Each Component of AOCI
Changes in each component of AOCI for the fiscal years ended March 31, 2018, 2019 and 2020 are as follows:
             
 
2018
 
 
2019
 
 
2020
 
 
(in millions of yen)
 
AOCI, balance at beginning of fiscal year, previously reported
  
1,521,163
   
1,741,894
   
164,021
 
Cumulative effect of change in accounting principles
(1)
  
—  
   
(1,535,142
)  
(1,052
)
AOCI, balance at beginning of fiscal year, adjusted
  
1,521,163
   
206,752
   
162,969
 
             
Net unrealized gains (losses) on
available-for-sale
securities:
  
   
   
 
Balance at beginning of fiscal year, previously reported
  
1,461,302
   
1,556,585
   
22,019
 
Cumulative effect of change in accounting principles
(1)
  
—  
   
(1,525,064
)  
—  
 
Balance at beginning of fiscal year, adjusted
  
1,461,302
   
31,521
   
22,019
 
Unrealized holding gains (losses) during year
  
282,141
   
(11,358
)  
(22,566
)
Less: reclassification adjustments for losses (gains) included in net income
  
(186,858
)  
1,856
   
(19,045
)
             
Change during year
  
95,283
   
(9,502
)  
(41,611
)
             
Balance at end of fiscal year
  
1,556,585
   
22,019
   
(19,592
)
             
Foreign currency translation adjustments:
  
   
   
 
Balance at beginning of fiscal year, previously reported
  
(5,535
)  
(35,076
)  
(58,558
)
Cumulative effect of change in accounting principles
(1)
  
—  
   
—  
   
(1,052
)
Balance at beginning of fiscal year, adjusted
  
(5,535
)  
(35,076
)  
(59,610
)
Foreign currency translation adjustments during year
  
(26,936
)  
(22,737
)  
(49,888
)
Less: reclassification adjustments for losses (gains) included in net income
  
(2,605
)  
(745
)  
(374
)
             
Change during year
  
(29,541
)  
(23,482
)  
(50,262
)
             
Balance at end of fiscal year
  
(35,076
)  
(58,558
)  
(109,872
)
             
Pension liability adjustments:
  
   
   
 
Balance at beginning of fiscal year
  
65,396
   
220,385
   
196,446
 
Unrealized gains (losses) during year
  
157,737
   
(17,243
)  
(122,219
)
Less: reclassification adjustments for losses (gains) included in net income
  
(2,748
)  
(6,696
)  
(4,772
)
             
Change during year
  
154,989
   
(23,939
)  
(126,991
)
             
Balance at end of fiscal year
  
220,385
   
196,446
   
69,455
 
             
Own credit risk adjustments
(2)
:
  
   
   
 
Balance at beginning of fiscal year, previously reported
  
—  
   
—  
   
4,114
 
Cumulative effect of change in accounting principles
(1)
  
—  
   
(10,078
)  
—  
 
Balance at beginning of fiscal year, adjusted
  
—  
   
(10,078
)  
4,114
 
Unrealized gains (losses) during year
  
—  
   
14,293
   
45,560
 
Less: reclassification adjustments for losses (gains) included in net income
  
—  
   
(101
)  
841
 
             
Change during year
  
—  
   
14,192
   
46,401
 
             
Balance at end of fiscal year
  
—  
   
4,114
   
50,515
 
Total other comprehensive income (loss), net of tax attributable to MHFG shareholders
  
220,731
   
(42,731
)  
(172,463
)
             
AOCI, balance at end of fiscal year
  
1,741,894
   
164,021
   
(9,494
)
             
 
 
 
 
 
 
Notes:
(1)See Note 2 “Issued accounting pronouncements” for further details of the cumulative-effect adjustment for AOCI.
 
 
 
 
 
(2)The MHFG Group adopted ASU
No.2016-01
on April 1, 2018. The ASU requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments. See Note 2 “Issued accounting pronouncements” for further details.
 
 
 
 
 
Amounts Reclassified Out of Accumulated Other Comprehensive Income into Net Income
The following table shows the amounts reclassified out of AOCI into net income during the fiscal year ended March 31, 2020:
                       
 
Before
tax
(1)
 
 
Tax
effect
(2)
 
 
Net of tax
before
allocation to
noncontrolling
interests
 
 
Net of tax
attributable to
noncontrolling
interests
(2)
 
 
Net of tax
attributable
to MHFG
shareholders
 
 
 
(in millions of yen)
  
Amounts reclassified out of AOCI into net income:
  
   
   
   
   
  
Affected line items in the consolidated statements of income:
Net unrealized gains (losses) on
available-for-sale
securities
  
27,449
   
(8,410
)  
19,039
   
6
   
19,045
  
Investment gains (losses)—net
Foreign currency translation adjustments
  
374
   
—  
   
374
   
—  
   
374
  
Investment gains (losses)—net
Pension liability adjustments
  
6,618
   
(1,765
)  
4,853
   
(81
)  
4,772
  
Salaries and employee benefits
Own credit risk adjustments
  
(1,265
)  
387
   
(878
)  
37
   
(841
) 
Other noninterest income (expenses)
                       
Total
  
33,176
   
(9,788
)  
23,388
   
(38
)  
23,350
  
                       
 
 
 
 
 
 
Notes:
(1)The financial statement line item in which the amounts in the Before tax column are reported in the Consolidated statements of income is listed to the right of the table.
 
 
 
 
 
(2)The financial statement line items in which the amounts in the Tax effect and the Net of tax attributable to noncontrolling interest columns are reported in the consolidated statements of income are Income tax expense and Net income, respectively.