v3.24.1.u1
Accumulated Other Comprehensive Income (Loss)
 3 Months Ended
Mar. 31, 2024
Equity [Abstract]  
Accumulated Other Comprehensive Income (Loss) Accumulated Other Comprehensive Income (Loss)
The changes in AOCI by component, net of tax, for the quarter ended March 31, 2024 were as follows (in millions):
Post-
retirement
benefit plans		Currency
translation
adjustment		DerivativesDeferred Tax Asset Valuation AllowanceTotal
Attributable to ATI:
Balance, December 31, 2023$(32.5)$(68.4)$(6.4)$24.1 $(83.2)
OCI before reclassifications — (6.4) (1.4)— (7.8)
Amounts reclassified from AOCI(a)0.9 (b)— (c)1.3 (d)— 2.2 
Net current-period OCI 0.9 (6.4) (0.1)— (5.6)
Balance, March 31, 2024$(31.6)$(74.8)$(6.5)$24.1 $(88.8)
Attributable to noncontrolling interests:
Balance, December 31, 2023$— $7.3 $— $— $7.3 
OCI before reclassifications — (0.2) — — (0.2)
Amounts reclassified from AOCI — (b)—  — — — 
Net current-period OCI — (0.2) — — (0.2)
Balance, March 31, 2024$— $7.1 $— $— $7.1 
(a)Amounts were included in net periodic benefit cost for pension and other postretirement benefit plans (see Note 11).
(b)No amounts were reclassified to earnings.
(c)Amounts related to derivatives are included in sales, cost of goods sold or interest expense in the period or periods the hedged item affects earnings (see Note 8).
(d)Represents the net change in deferred tax asset valuation allowances on changes in AOCI balances between the balance sheet dates.
The changes in AOCI by component, net of tax, for the quarter ended April 2, 2023 were as follows (in millions):
Post-
retirement
benefit plans		Currency
translation
adjustment		DerivativesDeferred Tax Asset Valuation AllowanceTotal
Attributable to ATI:
Balance, January 1, 2023$(34.7)$(70.1)$13.5 $23.9 $(67.4)
OCI before reclassifications — (1.1) (11.4)— (12.5)
Amounts reclassified from AOCI(a)1.1 (b)— (c)(4.2)(d)(4.6)(7.7)
Net current-period OCI 1.1 (1.1) (15.6)(4.6)(20.2)
Balance, April 2, 2023$(33.6)$(71.2)$(2.1)$19.3 $(87.6)
Attributable to noncontrolling interests:
Balance, January 1, 2023$— $7.7 $— $— $7.7 
OCI before reclassifications — 4.4  — — 4.4 
Amounts reclassified from AOCI — (b)—  — — — 
Net current-period OCI — 4.4  — — $4.4 
Balance, April 2, 2023$— $12.1 $— $— $12.1 
(a)Amounts were included in net periodic benefit cost for pension and other postretirement benefit plans (see Note 11).
(b)No amounts were reclassified to earnings.
(c)Amounts related to derivatives are included in sales, cost of goods sold or interest expense in the period or periods the hedged item affects earnings (see Note 8).
(d)Represents the net change in deferred tax asset valuation allowances on changes in AOCI balances between the balance sheet dates.
Other comprehensive income (loss) amounts (OCI) reported above by category are net of applicable income tax expense (benefit) for each year presented. Income tax expense (benefit) on OCI items is recorded as a change in a deferred tax asset or liability. Amounts recognized in OCI include the impact of any deferred tax asset valuation allowances, when applicable. Foreign currency translation adjustments, including those pertaining to noncontrolling interests, are generally not adjusted for income taxes as they relate to indefinite investments in non-U.S. subsidiaries.
Reclassifications out of AOCI for the quarters ended March 31, 2024 and April 2, 2023 were as follows: 
 
Details about AOCI Components
(In millions)
Three months ended March 31, 2024Three months ended April 2, 2023Affected line item in the statements
of operations
Postretirement benefit plans
Prior service credit$0.1 0.1 (a) 
Actuarial losses(1.3)(1.5)(a) 
(1.2)(1.4)(c) Total before tax
(0.3)(0.3)Tax benefit (d)
$(0.9)$(1.1)Net of tax
Derivatives
Nickel and other raw material contracts$— $6.9 (b)
Natural gas contracts(2.4)(1.8)(b)
Foreign exchange contracts0.3 0.1 (b)
Interest rate swap0.4 0.3 (b)
(1.7)5.5 (c)Total before tax
(0.4)1.3 Tax expense (benefit) (d)
$(1.3)$4.2 Net of tax
(a)Amounts are reported in nonoperating retirement benefit expense (see Note 11).
(b)Amounts related to derivatives, with the exception of the interest rate swap, are included in sales or cost of goods sold in the period or periods the hedged item affects earnings. Amounts related to the interest rate swap are included in interest expense in the same period as the interest expense on the Term Loan is recognized in earnings (see Note 8).
(c)For pre-tax items, positive amounts are income and negative amounts are expense in terms of the impact to net income. Tax effects are presented in conformity with ATI’s presentation in the consolidated statements of operations.
(d)These amounts exclude the impact of any deferred tax asset valuation allowances, when applicable.