Equipment Loans Payable - Summary of Equipment Loan Payable (Details) - Haul Trucks Financing $ in Millions	12 Months Ended
Dec. 31, 2018 USD ($)
Disclosure Of Equipment Loan Payable [Line Items]
Balance, Closing Date	$ 2,431
Interest	90
Payments - principal and interest	(486)
Equipment loan payable, net	2,035
Non-current portion of loans payable	1,318
Current portion of loans payable	$ 717

Disclosure of equipment loan payable.

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- Definition

Equipment loan payables.

+ References

No definition available.

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- Definition

Interest on loan financing.

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No definition available.

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- Definition

Payments of Principal and Interest.

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No definition available.

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- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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The non-current portion of non-current borrowings. [Refer: Borrowings]

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The amount of current borrowings. [Refer: Borrowings]

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