The adjustment to the basis (reference rate) used for calculation of the interest rate on borrowings. [Refer: Borrowings]

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

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No definition available.

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- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The cash outflow to settle borrowings, classified as financing activities. [Refer: Borrowings]

+ References

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

No definition available.

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- Definition

The percentage of amortization to original principal amount.

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No definition available.

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- Definition

The percentage of prepayment premium.

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- Definition

The cash outflow to settle premium on borrowings, classified as financing activities.

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No definition available.

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- Definition

The term of the soft call prepayment premium.

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Long-term debt - Narrative (Details) - USD ($) $ in Millions				12 Months Ended
	Oct. 05, 2017	Feb. 28, 2017	Feb. 22, 2017	Dec. 31, 2017	Dec. 31, 2016
Long-term debt
Premium on repayments of debt	$ 20.0
DigitalGlobe
Long-term debt
Repayments of debt				$ 1,266.0
Syndicated Credit Facility
Long-term debt
Aggregate principal amount	3,750.0
Syndicated Credit Facility \| DigitalGlobe
Long-term debt
Aggregate principal amount	3,750.0
Revolving Credit Facility
Long-term debt
Letter of credit	$ 200.0
First Lien Revolving Credit Facility
Long-term debt
Debt term	4 years
Limit under which letters of credit can be issued	$ 1,150.0
First Lien Revolving Credit Facility \| DigitalGlobe
Long-term debt
Aggregate principal amount	1,150.0
Senior Secured First Lien Operating Facility
Long-term debt
Aggregate principal amount	$ 100.0
Debt term	4 years
Term Loan A
Long-term debt
Aggregate principal amount	$ 500.0
Term Loan A Tranche 1
Long-term debt
Aggregate principal amount	$ 250.0
Debt term	3 years
Term Loan A Tranche 2
Long-term debt
Aggregate principal amount	$ 250.0
Debt term	4 years
Term B loan payable
Long-term debt
Aggregate principal amount	$ 2,000.0
Debt term	7 years
Percentage of amortization to original principal amount	1.00%
Prepayment premium (as a percent)	1.00%
Term of soft call prepayment premium	6 months
Term B loan payable \| DigitalGlobe
Long-term debt
Aggregate principal amount	$ 2,000.0
Letter of credit
Long-term debt
Letter of credit				$ 125.0
2024 Term notes
Long-term debt
Aggregate principal amount					$ 250.0
Debt term					12 years
Repayments of debt		$ 10.2
2017 Term notes
Long-term debt
Aggregate principal amount					$ 100.0
Repayments of debt			$ 100.0
U.S. LIBOR \| Term B loan payable
Long-term debt
Interest rate margin (as a percent)	2.75%
Minimum \| LIBOR and CDOR \| Revolving Credit Facility and Term Loan A
Long-term debt
Interest rate margin (as a percent)	1.20%
Maximum \| LIBOR and CDOR \| Revolving Credit Facility and Term Loan A
Long-term debt
Interest rate margin (as a percent)	3.00%