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Property, Plant and Equipment - Estimated Service Lives of Property, Plant and Equipment - Asset Used by The Company (Detail) - Assets Used by the Company [Member]
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Land improvements [Member] | Bottom of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives P10Y P10Y
Land improvements [Member] | Top of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives 30 years P30Y
Main buildings [Member] | Bottom of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives P20Y P20Y
Main buildings [Member] | Top of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives P60Y P60Y
Other building facilities [Member] | Bottom of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives P3Y P3Y
Other building facilities [Member] | Top of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives P15Y P15Y
Computer equipment [Member] | Bottom of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives P1Y P1Y
Computer equipment [Member] | Top of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives P8Y P8Y
Telecommunication circuits [Member] | Bottom of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives P2Y P2Y
Telecommunication circuits [Member] | Top of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives P30Y P30Y
Telecommunication machinery and antennas equipment [Member] | Bottom of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives P2Y P2Y
Telecommunication machinery and antennas equipment [Member] | Top of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives P30Y P30Y
Transportation equipment [Member] | Bottom of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives P3Y P3Y
Transportation equipment [Member] | Top of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives P10Y P10Y
Leasehold improvements [Member] | Bottom of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives P1Y P1Y
Leasehold improvements [Member] | Top of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives P9Y P9Y
Mechanical and air conditioner equipment [Member] | Bottom of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives P3Y P3Y
Mechanical and air conditioner equipment [Member] | Top of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives P16Y P16Y
Others [Member] | Bottom of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives P1Y P1Y
Others [Member] | Top of Range [Member]    
Disclosure Of Property Plant And Equipment [Line Items]    
Estimated service lives P15Y P15Y