XML 63 R52.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Long-Term Debt - Long-Term Debt (Parenthetical) (Detail) | 9 Months Ended
--- | ---
Sep. 30, 2022
0.650% Senior Notes, Due 2023 (discharged) |
Debt Instrument [Line Items] |
Maturity year | 2023
Interest rate on notes | 0.65%
4.25% Senior Notes, Due 2024 |
Debt Instrument [Line Items] |
Maturity year | 2024
Interest rate on notes | 4.25%
7% Debentures, Due 2025 |
Debt Instrument [Line Items] |
Maturity year | 2025
Interest rate on notes | 7.00%
3.450% Senior Notes, Due 2027 |
Debt Instrument [Line Items] |
Maturity year | 2027
Interest rate on notes | 3.45%
3.500% Senior Notes, Due 2027 |
Debt Instrument [Line Items] |
Maturity year | 2027
Interest rate on notes | 3.50%
2.500% Senior Notes, Due 2030 |
Debt Instrument [Line Items] |
Maturity year | 2030
Interest rate on notes | 2.50%
2.400% Senior Notes, Due 2031 |
Debt Instrument [Line Items] |
Maturity year | 2031
Interest rate on notes | 2.40%
6.25% Senior Notes, Due 2037 |
Debt Instrument [Line Items] |
Maturity year | 2037
Interest rate on notes | 6.25%
4.250% Senior Notes, Due 2047 |
Debt Instrument [Line Items] |
Maturity year | 2047
Interest rate on notes | 4.25%
3.200% Senior Notes, Due 2051 |
Debt Instrument [Line Items] |
Maturity year | 2051
Interest rate on notes | 3.20%

X
- Definition Debt instrument maturity date year. + References No definition available. + Details
Name: | mlm_DebtInstrumentMaturityDateYear
Namespace Prefix: | mlm_
Data Type: | xbrli:gYearItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mlm_ZeroPointSixFiveZeroPercentSeniorNotesDueTwentyTwentyThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mlm_FourPointTwoFivePercentSeniorNotesDueTwentyTwentyFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mlm_SevenPercentDebenturesDueTwentyTwentyFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mlm_ThreePointFourFivePercentSeniorNotesDueTwentyTwentySevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mlm_ThreePointFiveZeroZeroPercentSeniorNotesDueTwentyTwentySevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mlm_TwoPointFiveZeroZeroPercentSeniorNotesDueTwentyThirtyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mlm_TwoPointFourZeroZeroPercentSeniorNotesDueTwentyThirtyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mlm_SixPointTwoFivePercentageOfSeniorNotesDueTwoThousandThirtySevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mlm_FourPointTwoFiveZeroPercentSeniorNotesDueTwentyFourtySevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=mlm_ThreePointTwoZeroZeroPercentSeniorNotesDueTwentyFiftyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |