Number Of Construction Projects

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- Definition

Percentage represents the Company's ownership percentage in the joint venture.

+ References

No definition available.

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- Definition

Related Party's Ownership Percentage In Joint Venture

+ References

No definition available.

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- Definition

Carrying amount as of the balance sheet date of obligations due all related parties.

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- Definition

The expense in the period incurred with respect to protection provided by insurance entities against risks other than risks associated with production (which are allocated to cost of sales).

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-Publisher FASB
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- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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- References

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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Related Party Transactions (Details) $ in Millions	12 Months Ended
Related Party Transactions (Details) $ in Millions	Dec. 31, 2018 USD ($) item	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Related party transactions
Expenses incurred with related party	$ 3.2	$ 3.2	$ 3.2
Chairman and Chief Executive Officer
Related party transactions
Lease payment to related party	$ 3.0	2.8	2.8
O&G [Member]
Related party transactions
Ownership percentage in joint venture	75.00%
Related party's ownership percentage in joint venture	25.00%
O&G [Member] \| Project In Los Angeles, California [Member]
Related party transactions
Number of construction projects \| item	1
Alliant [Member]
Related party transactions
Insurance expense	$ 14.7	17.6	$ 8.9
Owed to related party	$ 4.1	$ 0.5