Deferred Compensation Arrangement, Employer Contributions and Earnings, Maximum Vesting Period

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- Definition

Deferred Compensation Arrangement, Maximum Deferral Percentage

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- Definition

Defined Benefit Plan, Actual Plan Asset Allocation

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- Definition

Defined Contribution Plan, Base Annual Contribution Per Employee, Percent

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- Definition

Defined Contribution Plan, Number of Shares of Equity Securities Issued by Employer

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- Definition

Defined Benefit Plan, Percentage of Employer and Related Party Securities Included in Plan Assets

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No definition available.

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- References

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer).

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No definition available.

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- Definition

Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.

+ References

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- Definition

Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

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- 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.

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No definition available.

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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan.

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- Definition

Amount of contributions made to multiemployer plan by employer.

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Retirement Plans and Post Retirement Benefits Defined Contribution Plans and Other Benefit Plans (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	0.00%
Defined Benefit Plan, Actual Plan Asset Allocation	1.00%	0.00%
Defined Contribution Plans [Abstract]
Expenses related to defined contribution plans and multiemployer plan	$ 9.0	$ 10.0	$ 10.0
Funded status	$ (10.0)	(18.0)
Deferred Compensation Arrangements [Abstract]
Deferred compensation plan maximum deferral percentage	90.00%
Deferred compensation plan, employer contributions and related earnings, maximum vesting period	5 years
Deferred compensation liability included in "Other long-term liabilities"	$ (2.0)	$ (2.0)
US Defined Contribution Plan [Member]
Defined Contribution Plans [Abstract]
Maximum percentage of employee's wages eligible for company match	5.00%
Shares of LP common stock included in plan assets	1,000,000
Total market value of plan assets represented by LP common stock	8.00%
Canadian Defined Contribution Plan [Member]
Defined Contribution Plans [Abstract]
Maximum percentage of employee's wages eligible for company match	3.00%
Percentage of base contribution	3.00%
Employer matching percentage	50.00%
UNITED STATES
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	100.00%
Defined Benefit Plan, Actual Plan Asset Allocation	100.00%	100.00%
UNITED STATES \| Equity Securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	33.00%
Defined Benefit Plan, Actual Plan Asset Allocation	41.00%	40.00%
UNITED STATES \| Debt Securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	50.00%
Defined Benefit Plan, Actual Plan Asset Allocation	38.00%	40.00%
UNITED STATES \| Multi-strategy Funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined Benefit Plan, Plan Assets, Target Allocation, Percentage	17.00%
Defined Benefit Plan, Actual Plan Asset Allocation	20.00%	20.00%
Other Postretirement Benefits Plan [Member]
Defined Contribution Plans [Abstract]
Funded status	$ 10.0	$ 7.0