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Consolidated Statements of Cash Flows
$ in Millions
 12 Months Ended
Dec. 31, 2023
TWD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
TWD ($)
Dec. 31, 2021
TWD ($)
CASH FLOWS FROM OPERATING ACTIVITIES        
Income before income tax $ 47,008,000,000 $ 1,535 $ 47,204,000,000 $ 46,067,000,000
Adjustments for:        
Depreciation 32,956,000,000 1,076 32,786,000,000 31,832,000,000
Amortization 6,699,000,000 219 6,643,000,000 6,569,000,000
Amortization of incremental costs of obtaining contracts 856,000,000 28 841,000,000 815,000,000
Expected credit loss 152,000,000 5 117,000,000 143,000,000
Interest expense 319,000,000 10 263,000,000 218,000,000
Interest income (618,000,000) (20) (249,000,000) (95,000,000)
Dividend income (167,000,000) (5) (157,000,000) (154,000,000)
Compensation cost of share-based payment transactions 8,000,000 0 16,000,000 19,000,000
Share of profits of associates and joint ventures accounted for using equity method (253,000,000) (8) (442,000,000) (421,000,000)
Loss (gain) on disposal of property, plant and equipment 0 0 (5,000,000) (3,000,000)
Gain on disposal of investment properties 0 0 (1,000,000) 0
Loss (gain) on disposal of investments accounted for using equity method (6,000,000) 0 14,000,000 (4,000,000)
Provision for impairment loss and obsolescence of inventory 23,000,000 1 34,000,000 207,000,000
Impairment loss on property, plant and equipment 299,000,000 10 0 0
Impairment loss on right-of-use assets 0 0 0 420,000,000
Impairment loss (reversal of impairment loss) on investment properties 336,000,000 10 (107,000,000) (83,000,000)
Impairment loss on intangible assets 0 0 9,000,000 29,000,000
Valuation loss (gain) on financial assets and liabilities at fair value through profit or loss, net 98,000,000 3 206,000,000 (243,000,000)
Others (60,000,000) (2) 254,000,000 (133,000,000)
Changes in operating assets and liabilities:        
Contract assets (1,291,000,000) (42) (1,031,000,000) (336,000,000)
Trade notes and accounts receivable (287,000,000) (9) (785,000,000) (1,339,000,000)
Receivables from related parties (3,000,000) 0 (34,000,000) 189,000,000
Inventories (178,000,000) (6) (23,000,000) 875,000,000
Prepayments (315,000,000) (9) 2,000,000 392,000,000
Other current monetary assets 107,000,000 3 (165,000,000) (386,000,000)
Other current assets 733,000,000 24 (576,000,000) (630,000,000)
Incremental cost of obtaining contracts (1,026,000,000) (34) (833,000,000) (803,000,000)
Contract liabilities 584,000,000 19 1,990,000,000 (1,652,000,000)
Trade notes and accounts payable (2,033,000,000) (66) (1,631,000,000) 2,468,000,000
Payables to related parties (154,000,000) (5) 147,000,000 (255,000,000)
Other payables 562,000,000 18 782,000,000 248,000,000
Provisions 373,000,000 12 (28,000,000) 13,000,000
Other current liabilities (14,000,000) 0 60,000,000 (12,000,000)
Net defined benefit plans (728,000,000) (24) (724,000,000) (756,000,000)
Cash generated from operations 83,980,000,000 2,743 84,587,000,000 83,205,000,000
Interests paid (314,000,000) (10) (239,000,000) (192,000,000)
Income taxes paid (9,107,000,000) (297) (8,397,000,000) (8,155,000,000)
Net cash provided by operating activities 74,559,000,000 2,436 75,951,000,000 74,858,000,000
CASH FLOWS FROM INVESTING ACTIVITIES        
Acquisition of financial assets at fair value through other comprehensive income (305,000,000) (10) (19,000,000) (313,000,000)
Proceeds from disposal of financial assets at fair value through other comprehensive income 0 0 0 2,912,000,000
Proceeds from capital reduction of financial assets at fair value through other comprehensive income 0 0 7,000,000 0
Acquisition of financial assets at fair value through profit or loss (133,000,000) (4) (360,000,000) (44,000,000)
Proceeds from disposal of financial assets at fair value through profit or loss 0 0 15,000,000 25,000,000
Proceeds from capital reduction and profit distribution of financial assets at fair value through profit or loss 22,000,000 1 66,000,000 0
Acquisition of time deposits, negotiable certificates of deposit and commercial paper with maturities of more than three months (45,239,000,000) (1,477) (5,670,000,000) (17,369,000,000)
Proceeds from disposal of time deposits, negotiable certificates of deposit with maturities of more than three months 28,577,000,000 933 7,310,000,000 18,446,000,000
Acquisition of investments accounted for using equity method (1,555,000,000) (51) (52,000,000) (330,000,000)
Proceeds from disposal of investments accounted for using equity method 0 0 0 9,000,000
Proceeds from capital reduction of investments accounted for using equity method 0 0 340,000,000 0
Acquisition of property, plant and equipment (30,741,000,000) (1,004) (31,535,000,000) (35,333,000,000)
Proceeds from disposal of property, plant and equipment 19,000,000 1 16,000,000 27,000,000
Acquisition of intangible assets (237,000,000) (8) (1,893,000,000) (256,000,000)
Acquisition of investment properties (54,000,000) (2) (18,000,000) (1,000,000)
Decrease in other noncurrent assets 166,000,000 5 235,000,000 338,000,000
Increase in prepayments for leases (1,729,000,000) (57) 0 0
Interests received 568,000,000 19 219,000,000 95,000,000
Dividends received 467,000,000 15 550,000,000 622,000,000
Net cash used in investing activities (50,174,000,000) (1,639) (30,789,000,000) (31,172,000,000)
CASH FLOWS FROM FINANCING ACTIVITIES        
Proceeds from short-term loans 2,590,000,000 85 1,292,000,000 154,000,000
Repayments of short-term loans (2,727,000,000) (89) (635,000,000) (156,000,000)
Proceeds from short-term bills payable 0 0 0 5,000,000,000
Repayments of short-term bills payable 0 0 0 (12,000,000,000)
Proceeds from issuance of bonds 0 0 3,500,000,000 7,000,000,000
Payments for transaction costs attributable to the issuance of bonds 0 0 (4,000,000) (7,000,000)
Increase (decrease) in customers' deposits 134,000,000 4 (223,000,000) 477,000,000
Payments for the principal of lease liabilities (3,884,000,000) (127) (3,777,000,000) (3,729,000,000)
Increase in other noncurrent liabilities 680,000,000 22 1,644,000,000 3,191,000,000
Cash dividends paid (36,476,000,000) (1,191) (35,746,000,000) (33,404,000,000)
Acquisition of additional interests in subsidiaries 0 0 0 0
Cash dividends distributed to noncontrolling interests (1,092,000,000) (35) (1,053,000,000) (896,000,000)
Change in other noncontrolling interests 43,000,000 1 200,000,000 54,000,000
Unclaimed dividend 2,000,000 0 2,000,000 2,000,000
Net cash used in financing activities (40,730,000,000) (1,330) (34,800,000,000) (34,314,000,000)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS (24,000,000) (1) 52,000,000 (13,000,000)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS (16,369,000,000) (534) 10,414,000,000 9,359,000,000
CASH AND CASH EQUIVALENTS, BEGINNING OF THE YEAR 50,193,000,000 1,639 39,779,000,000 30,420,000,000
CASH AND CASH EQUIVALENTS, END OF THE YEAR $ 33,824,000,000 $ 1,105 $ 50,193,000,000 $ 39,779,000,000