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Business Combination - Summary of Purchase Price Allocation (Detail) - Holcim Ltd. [member]
$ in Millions
Dec. 31, 2015
MXN ($)
Disclosure of detailed information about business combination [line items]  
Current assets $ 290
Property, machinery and equipment 3,423
Other non-current assets 270
Intangible assets 592
Fair value of assets acquired 4,575
Current liabilities 174
Non-current liabilities 458
Fair value of liabilities assumed 632
Fair value of net assets acquired 3,943
Czech Republic [member]  
Disclosure of detailed information about business combination [line items]  
Current assets 231
Property, machinery and equipment 1,419
Other non-current assets 270
Intangible assets 590
Fair value of assets acquired 2,510
Current liabilities 117
Non-current liabilities 344
Fair value of liabilities assumed 461
Fair value of net assets acquired 2,049
Spain [member]  
Disclosure of detailed information about business combination [line items]  
Current assets 59
Property, machinery and equipment 2,004
Other non-current assets 0
Intangible assets 2
Fair value of assets acquired 2,065
Current liabilities 57
Non-current liabilities 114
Fair value of liabilities assumed 171
Fair value of net assets acquired $ 1,894