Related-Party Transactions (Details) - USD ($)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transactions
Premiums paid related to agreements	$ 0
Revenue from related party	723,800,000	$ 65,700,000
Expenses from business transactions with unconsolidated affiliates	200,000	100,000	$ 100,000
Accounts receivable from affiliated entities	122,900,000	54,200,000
Long-term payables with affiliated entities		800,000
James R Crane \| Crane Capital Group Inc
Related Party Transactions
Accounts payable to affiliated entities	800,000	800,000
Amount paid to related party for services provided	19,900,000	14,600,000	$ 23,500,000
Management
Related Party Transactions
Premium payments to date related to life insurance policies	6,600,000
Cash surrender value included in other long-term assets	$ 6,000,000	$ 6,000,000

The amount of premiums paid related to life insurance agreements with related parties.

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Represents the paid to related party for services provided.

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Amount for accounts payable to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of receivables arising from transactions with related parties due within one year or the normal operating cycle, if longer.

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- Definition

Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity.

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Portion of the carrying amount as of the balance sheet date of obligations due all related parties that is payable after one year or beyond the normal operating cycle if longer.

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Amount of cash outflow for payment of premium on corporate-owned life insurance policy, classified as operating activities. Includes, but is not limited to, bank-owned life insurance policy.

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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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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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