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Consolidated Statements of Cash Flows
$ in Millions
 12 Months Ended
Dec. 31, 2021
TWD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
TWD ($)
Dec. 31, 2019
TWD ($)
CASH FLOWS FROM OPERATING ACTIVITIES        
Income before income tax $ 46,067,000,000 $ 1,661 $ 42,826,000,000 $ 41,867,000,000
Adjustments for:        
Depreciation 31,832,000,000 1,148 30,942,000,000 30,923,000,000
Amortization 6,569,000,000 237 5,424,000,000 4,253,000,000
Amortization of incremental costs of obtaining contracts 815,000,000 29 772,000,000 1,173,000,000
Expected credit loss (reversal of credit loss) 143,000,000 5 45,000,000 (125,000,000)
Interest expense 218,000,000 8 206,000,000 104,000,000
Interest income (95,000,000) (3) (116,000,000) (251,000,000)
Dividend income (154,000,000) (6) (246,000,000) (296,000,000)
Compensation cost of share-based payment transactions 19,000,000 0 8,000,000 2,000,000
Share of profits of associates and joint ventures accounted for using equity method (421,000,000) (15) (244,000,000) (459,000,000)
Loss (gain) on disposal of property, plant and equipment 3,000,000 0 (1,428,000,000) 38,000,000
Gain on disposal of investment properties 0 0 (151,000,000) 0
Loss on disposal of intangible assets 0 0 2,000,000 0
Loss (gain) on disposal of financial instruments 0 0 2,000,000 (4,000,000)
Gain on disposal of investments accounted for using equity method (4,000,000) 0 (10,000,000) (151,000,000)
Provision for impairment loss and obsolescence of inventory 207,000,000 7 1,161,000,000 475,000,000
Impairment loss on property, plant and equipment 0 0 0 93,000,000
Impairment loss on right-of-use assets 420,000,000 15 0 0
Reversal of impairment loss on investment properties (83,000,000) (3) (27,000,000) (57,000,000)
Impairment loss on intangible assets 29,000,000 1 9,000,000 9,000,000
Impairment loss on other assets 0 0 0 44,000,000
Valuation loss (gain) on financial assets and liabilities at fair value through profit or loss, net (243,000,000) (9) 99,000,000 38,000,000
Others (133,000,000) (5) 4,000,000 (26,000,000)
Changes in operating assets and liabilities:        
Contract assets (336,000,000) (12) (203,000,000) 173,000,000
Trade notes and accounts receivable (1,339,000,000) (48) 4,071,000,000 4,039,000,000
Receivables from related parties 189,000,000 7 (214,000,000) 7,000,000
Inventories 875,000,000 32 3,915,000,000 (2,698,000,000)
Prepayments 392,000,000 14 173,000,000 115,000,000
Other current monetary assets (386,000,000) (14) 355,000,000 (155,000,000)
Other current assets (630,000,000) (23) 156,000,000 146,000,000
Incremental cost of obtaining contracts (803,000,000) (29) (829,000,000) (781,000,000)
Contract liabilities (1,652,000,000) (60) (3,289,000,000) 6,701,000,000
Trade notes and accounts payable 2,468,000,000 89 21,000,000 (5,152,000,000)
Payables to related parties (255,000,000) (9) (8,000,000) (264,000,000)
Other payables 248,000,000 9 (924,000,000) 697,000,000
Provisions 13,000,000 0 95,000,000 97,000,000
Other current liabilities (12,000,000) 0 46,000,000 (159,000,000)
Net defined benefit plans (756,000,000) (27) (174,000,000) 534,000,000
Cash generated from operations 83,205,000,000 2,999 82,469,000,000 80,950,000,000
Interests paid (192,000,000) (6) (161,000,000) (104,000,000)
Income taxes paid (8,155,000,000) (294) (7,852,000,000) (8,419,000,000)
Net cash provided by operating activities 74,858,000,000 2,699 74,456,000,000 72,427,000,000
CASH FLOWS FROM INVESTING ACTIVITIES        
Acquisition of financial assets at fair value through other comprehensive income (313,000,000) (11) (85,000,000) (60,000,000)
Proceeds from disposal of financial assets at fair value through other comprehensive income 2,912,000,000 105 297,000,000 0
Proceeds from return of financial assets at fair value through other comprehensive income 0 0 0 9,000,000
Acquisition of financial assets at fair value through profit or loss (44,000,000) (2) (39,000,000) (443,000,000)
Proceeds from disposal of financial assets at fair value through profit or loss 25,000,000 1 30,000,000 146,000,000
Acquisition of time deposits and negotiable certificates of deposit with maturities of more than three months (17,369,000,000) (626) (5,216,000,000) (14,381,000,000)
Proceeds from disposal of time deposits and negotiable certificates of deposit with maturities of more than three months 18,446,000,000 665 6,630,000,000 16,520,000,000
Acquisition of repurchase agreements collateralized by bonds with maturities of more than three months 0 0 0 (15,000,000)
Proceeds from disposal of repurchase agreements collateralized by bonds with maturities of more than three months 0 0 15,000,000 0
Acquisition of investments accounted for using equity method (330,000,000) (12) (10,000,000) (4,190,000,000)
Proceeds from disposal of investments accounted for using equity method 9,000,000 0 0 32,000,000
Acquisition of property, plant and equipment (35,333,000,000) (1,274) (23,511,000,000) (24,166,000,000)
Proceeds from disposal of property, plant and equipment 27,000,000 1 319,000,000 48,000,000
Acquisition of intangible assets (256,000,000) (9) (47,605,000,000) (363,000,000)
Acquisition of investment properties (1,000,000) 0 (54,000,000) (1,000,000)
Proceeds from disposal of investment properties 0 0 188,000,000 0
Decrease (increase) in other noncurrent assets 338,000,000 12 (208,000,000) (1,122,000,000)
Interests received 95,000,000 3 125,000,000 257,000,000
Dividends received 622,000,000 22 516,000,000 602,000,000
Net cash inflow on acquisition of subsidiaries 0 0 354,000,000 0
Net cash used in investing activities (31,172,000,000) (1,125) (68,254,000,000) (27,127,000,000)
CASH FLOWS FROM FINANCING ACTIVITIES        
Proceeds from short-term loans 154,000,000 6 115,000,000 575,000,000
Repayments of short-term loans (156,000,000) (6) (142,000,000) (585,000,000)
Proceeds from short-term bills payable 5,000,000,000 180 41,000,000,000 0
Repayments of short-term bills payable (12,000,000,000) (433) (34,000,000,000) 0
Proceeds from issuance of bonds 7,000,000,000 252 20,000,000,000 0
Payments for transaction costs attributable to the issuance of bonds (7,000,000) 0 (21,000,000) 0
Increase in customers’ deposits 477,000,000 17 62,000,000 8,000,000
Payments for the principal of lease liabilities (3,729,000,000) (134) (3,683,000,000) (3,728,000,000)
Increase in other noncurrent liabilities 3,191,000,000 115 342,000,000 233,000,000
Cash dividends paid (33,404,000,000) (1,204) (32,783,000,000) (34,746,000,000)
Cash dividends distributed to noncontrolling interests (896,000,000) (32) (775,000,000) (710,000,000)
Change in other noncontrolling interests 54,000,000 2 81,000,000 18,000,000
Unclaimed dividend 2,000,000 0 2,000,000 1,000,000
Net cash used in financing activities (34,314,000,000) (1,237) (9,802,000,000) (38,934,000,000)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS (13,000,000) 0 (30,000,000) 39,000,000
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS 9,359,000,000 337 (3,630,000,000) 6,405,000,000
CASH AND CASH EQUIVALENTS, BEGINNING OF THE YEAR 30,420,000,000 1,097 34,050,000,000 27,645,000,000
CASH AND CASH EQUIVALENTS, END OF THE YEAR $ 39,779,000,000 $ 1,434 $ 30,420,000,000 $ 34,050,000,000