Note 12 Revenue Recognition

On January 1, 2018, we adopted Topic 606, Revenue from Contracts with Customers (ASC 606). Under ASC 606, revenue is recognized when a customer obtains control of promised goods or services in an amount that reflects the consideration we expect to receive in exchange for those goods or services. In addition, ASC 606 requires disclosure of the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers.

We elected to adopt the standard using the modified retrospective method to all contracts that were not completed as of January 1, 2018. Results for reporting periods beginning after January 1, 2018 are presented under ASC 606, while prior period amounts are not adjusted and continue to be reported under the accounting standards in effect for the prior period. There was no impact to our consolidated financial statements as a result of adopting ASC 606.

We recognize revenue when control of a good or service promised in a contract (i.e., performance obligation) is transferred to a customer. Control is obtained when a customer has the ability to direct the use of and obtain substantially all of the remaining benefits from that good or service. Contract drilling revenues are recorded over time utilizing the input method based on time elapsed. The measurement of progress considers the transfer of the service to the customer as we provide daily drilling services. We receive payment after the services have been performed by billing customers periodically (typically monthly). However, a portion of our revenues are recognized at a point-in-time as control is transferred at a distinct point in time such as with the sale of our top drives and other capital equipment. Within our drilling contracts, we have identified one performance obligation in which the transaction price is allocated.

Disaggregation of revenue

In the following table, revenue is disaggregated by geographical region. The table also includes a reconciliation of the disaggregated revenue with the reportable segments:


	Three Months Ended
	June 30, 2018

		U.S. Drilling		Canada Drilling		International Drilling		Drilling Solutions		Rig Technologies		Other		Total
	(In thousands)
Lower 48	$	219,389	$	—	$	—	$	41,418	$	57,573	$	—	$	318,380
U.S. Offshore Gulf of Mexico		32,064		—		—		2,810		—		—		34,874
Alaska		12,942		—		—		877		208		—		14,027
Canada		—		17,442		—		1,425		10,222		—		29,089
Middle East & Asia		—		—		240,508		9,007		6,503		—		256,018
Latin America		—		—		87,809		3,665		1,919		—		93,393
Europe, Africa & CIS		—		—		49,669		657		4,896		—		55,222
Eliminations & other		—		—		—		—		—		(39,083)		(39,083)
Total	$	264,395	$	17,442	$	377,986	$	59,859	$	81,321	$	(39,083)	$	761,920


	Six Months Ended
	June 30, 2018

		U.S. Drilling		Canada Drilling		International Drilling		Drilling Solutions		Rig Technologies		Other		Total
	(In thousands)
Lower 48	$	423,981	$	—	$	—	$	85,687	$	108,174	$	—	$	617,842
U.S. Offshore Gulf of Mexico		53,055		—		—		6,109		—		—		59,164
Alaska		28,361		—		—		1,443		344		—		30,148
Canada		—		49,329		—		3,716		13,611		—		66,656
Middle East & Asia		—		—		474,367		16,735		11,709		—		502,811
Latin America		—		—		171,691		7,649		3,577		—		182,917
Europe, Africa & CIS		—		—		100,773		1,168		8,575		—		110,516
Eliminations & other		—		—		—		—		—		(73,940)		(73,940)
Total	$	505,397	$	49,329	$	746,831	$	122,507	$	145,990	$	(73,940)	$	1,496,114


	Three Months Ended
	June 30, 2017

		U.S. Drilling		Canada Drilling		International Drilling		Drilling Solutions		Rig Technologies		Other		Total
	(In thousands)
Lower 48	$	160,126	$	—	$	—	$	26,509	$	56,595	$	—	$	243,230
U.S. Offshore Gulf of Mexico		16,361		—		—		101		—		—		16,462
Alaska		10,857		—		—		1,306		188		—		12,351
Canada		—		17,121		—		1,322		1,564		—		20,007
Middle East & Asia		—		—		222,294		1,819		2,838		—		226,951
Latin America		—		—		103,920		614		—		—		104,534
Europe, Africa & CIS		—		—		54,124		158		—		—		54,282
Eliminations & other		—		—		—		—		—		(46,462)		(46,462)
Total	$	187,344	$	17,121	$	380,338	$	31,829	$	61,185	$	(46,462)	$	631,355


	Six Months Ended
	June 30, 2017

		U.S. Drilling		Canada Drilling		International Drilling		Drilling Solutions		Rig Technologies		Other		Total
	(In thousands)
Lower 48	$	297,349	$	—	$	—	$	48,829	$	95,255	$	—	$	441,433
U.S. Offshore Gulf of Mexico		29,667		—		—		186		—		—		29,853
Alaska		22,262		—		—		2,437		314		—		25,013
Canada		—		44,929		—		3,305		3,539		—		51,773
Middle East & Asia		—		—		418,552		3,121		6,153		—		427,826
Latin America		—		—		197,365		1,129		—		—		198,494
Europe, Africa & CIS		—		—		102,644		187		—		—		102,831
Eliminations & other		—		—		—		—		—		(83,318)		(83,318)
Total	$	349,278	$	44,929	$	718,561	$	59,194	$	105,261	$	(83,318)	$	1,193,905

Contract balances

We perform our obligations under a contract with a customer by transferring goods or services in exchange for consideration from the customer. We recognize a contract asset or liability when we transfer goods or services to a customer and bill an amount which differs from the revenue allocated to the related performance obligations.

The timing of revenue recognition may differ from the timing of invoicing to customers and these timing differences result in receivables, contract assets, or contract liabilities (deferred revenue) on our condensed consolidated balance sheet. In general, we receive payments from customers based on dayrates as stipulated in our contracts (i.e. operating rate, standby rate). The invoices billed to the customer are based on the varying rates applicable to the operating status on each rig. Accounts receivable are recorded when the right to consideration becomes unconditional.

Dayrate contracts also may contain fees charged to the customer for up-front rig modifications, mobilization and demobilization of equipment and personnel. These fees are associated with contract fulfillment activities, and the related revenue (subject to any constraint on estimates of variable consideration) is allocated to a single performance obligation and recognized ratably over the initial term of the contract. Mobilization fees are generally billable to the customer in the initial phase of a contract and generate contract liabilities until they are recognized as revenue. Demobilization fees are generally received at the end of the contract and generate contract assets when they are recognized as revenue prior to becoming receivables from the customer.

We receive reimbursements from our customers for the purchase of supplies, equipment, personnel services and other services provided at their request. Reimbursable revenues are variable and subject to uncertainty as the amounts received and timing thereof are dependent on factors outside of our influence. Accordingly, these revenues are constrained and not recognized until the uncertainty is resolved, which typically occurs when the related costs are incurred on behalf of the customer. We are generally considered a principal in these transactions and record the associated revenues at the gross amounts billed to the customer.

The opening and closing balances of our receivables, contract assets and current and long-term contract liabilities are as follows (in millions):


			Contract		Contract		Contract		Contract
	Contract		Assets		Assets		Liabilities		Liabilities
	Receivables		(Current)		(Long-term)		(Current)		(Long-term)

As of December 31, 2017	$	738.0	$	67.0	$	46.9	$	218.4	$	135.0
As of June 30, 2018	$	820.6	$	61.7	$	26.4	$	182.2	$	79.9

Approximately 62% of the contract liability balance at the beginning of the period is expected to be recognized as revenue during 2018, of which 31% was recognized during the six months ended June 30, 2018, and 25% is expected to be recognized during 2019. The remaining 13% of the contract liability balance at the beginning of the period is included within other long-term liabilities and expected to be recognized as revenue during 2020 or thereafter.

Additionally, 59% of the contract asset balance at the beginning of the period is expected to be recognized as expense during 2018, of which 35% was recognized during the six months ended June 30, 2018, and 26% is expected to be recognized during 2019. The remaining 15% of the contract asset balance at the beginning of the period is included within other long-term assets and expected to be recognized as expense during 2020 or thereafter. This disclosure does not include variable consideration allocated entirely to a wholly unsatisfied performance obligation or promise to transfer a distinct good or service that forms part of a single performance obligation.