v3.26.1
Pension and Other Employee Benefits - Summary of Changes in Present Value of Defined Benefit Obligations, Fair Value of Plan Assets and Components of Net Periodic Benefit Costs of Defined Contribution Plans (Detail) - PHP (₱)
₱ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Smart and Subsidiaries [Member]      
Disclosure Of Fair Value Of Plan Assets [Line Items]      
Service costs ₱ 262 ₱ 294 ₱ 262
Funded status - net 643 818 818
Prepaid contribution costs 643 818 818
Interest costs - net (40) (49) (51)
Others (28)    
Net periodic contribution costs 194 245 211
Present value of defined contribution obligation [Member] | Smart and Subsidiaries [Member]      
Disclosure Of Fair Value Of Plan Assets [Line Items]      
Present value of defined contribution obligations at beginning of the period 3,235 2,800 2,777
Contribution costs 262 294 262
Interest costs on contribution obligation 219 174 210
Actuarial gains on obligations - economic assumptions 1 (1) 8
Actuarial losses on obligations - experience (10) 254 (98)
Actual benefits paid/settlements (380) (89) (344)
Curtailment and others 275 (197) (15)
Present value of defined benefit obligations at end of the period 3,602 3,235 2,800
Plan assets [Member]      
Disclosure Of Fair Value Of Plan Assets [Line Items]      
Actual benefits paid/settlements 1,599 2,820 2,510
Fair value of plan assets at beginning of the period 13,985 14,522 16,291
Actual contributions 1,533 3,201 4,507
Interest income on plan assets 984 1,019 1,138
Return on plan assets (excluding amount included in net interest) (760) (1,937) (4,904)
Fair value of plan assets at end of the period 14,143 13,985 14,522
Plan assets [Member] | Smart and Subsidiaries [Member]      
Disclosure Of Fair Value Of Plan Assets [Line Items]      
Actual contribution paid/settlements (356) (87) (372)
Fair value of plan assets at beginning of the period 4,053 3,618 3,485
Actual contributions 246 243 248
Interest income on plan assets 260 223 261
Return on plan assets (excluding amount included in net interest) 42 56 (4)
Fair value of plan assets at end of the period ₱ 4,245 ₱ 4,053 ₱ 3,618