XML 96 R81.htm IDEA: XBRL DOCUMENT v3.8.0.1

Financial Risk Management - Financial Instruments and Classification Within the Fair Value Hierarchy (Details) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Assets
Cash and cash equivalents		$ 330,221	$ 399,737
Cash at banks		150,948	92,730
Liquidity funds		66,033	215,807
Short – term investments		113,240	91,200
Other investments - current		1,192,306	1,633,142
Other investments - non-current		128,335	249,719
Current trade receivables		1,214,060	954,685
Receivables C and NC		327,258	321,718
Non-current financial assets available-for-sale		21,572	21,572	$ 21,600
Total
Receivables C and NC		327,258	321,718
Liabilities
Borrowings C and NC		965,859	840,236
Trade payables		750,739	556,834
Other liabilities		197,504	183,887
Foreign exchange derivatives contracts [member]
Liabilities
Other liabilities		39,799	42,635
Other liabilities (non-Financial) [member]
Liabilities
Other liabilities		157,705
Other liabilities [member]
Liabilities
Other liabilities			141,252
Derivatives [member]
Assets
Receivables C and NC		8,230
Receivables C and NC		8,230
Foreign exchange derivatives contracts [member]
Assets
Receivables C and NC			2,759
Receivables C and NC			2,759
Other receivables [member]
Assets
Receivables C and NC		176,716	176,990
Receivables C and NC		176,716	176,990
Other receivables (non-Financial) [member]
Assets
Receivables C and NC		142,314	141,969
Receivables C and NC		142,314	141,969
Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member]
Assets
Other investments - current		437,406	782,029
Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Certificates of Deposits [member]
Assets
Other investments - current		297,788	525,068
Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Non - U.S. Sovereign Bills [member]
Assets
Other investments - current			41,370
Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Commercial Papers [member]
Assets
Other investments - current		9,943	34,890
Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Other notes [member]
Assets
Other investments - current		129,675	180,701
Bonds and other fixed income [member]
Assets
Other investments - current		754,800	841,638
Other investments - non-current		123,498	248,049
Bonds and other fixed income [member] | U.S. government securities [member]
Assets
Other investments - current		130,477	216,732
Bonds and other fixed income [member] | Non - U.S. government securities [member]
Assets
Other investments - current		161,063	88,805
Bonds and other fixed income [member] | Corporates securities [member]
Assets
Other investments - current		378,831	462,625
Bonds and other fixed income [member] | Structured Notes [member]
Assets
Other investments - current		68,044
Bonds and other fixed income [member] | Mortgage- and Asset-backed securities [member]
Assets
Other investments - current		16,385	73,476
Other investments [member]
Assets
Other investments - current		100
Other investments - non-current		4,837	1,670
Fund investments [member]
Assets
Other investments - current			9,475
Level 1 of fair value hierarchy [member]
Assets
Cash and cash equivalents		179,273	307,007
Cash at banks
Liquidity funds		66,033	215,807
Short – term investments		113,240	91,200
Other investments - current		459,476	607,866
Other investments - non-current
Current trade receivables
Receivables C and NC
Non-current financial assets available-for-sale	[1]
Total		638,749	914,873
Receivables C and NC
Liabilities
Borrowings C and NC
Trade payables
Other liabilities
Total
Level 1 of fair value hierarchy [member] | Foreign exchange derivatives contracts [member]
Liabilities
Other liabilities
Level 1 of fair value hierarchy [member] | Other liabilities (non-Financial) [member]
Liabilities
Other liabilities
Level 1 of fair value hierarchy [member] | Other liabilities [member]
Liabilities
Other liabilities
Level 1 of fair value hierarchy [member] | Derivatives [member]
Assets
Receivables C and NC
Receivables C and NC
Level 1 of fair value hierarchy [member] | Foreign exchange derivatives contracts [member]
Assets
Receivables C and NC
Receivables C and NC
Level 1 of fair value hierarchy [member] | Other receivables [member]
Assets
Receivables C and NC
Receivables C and NC
Level 1 of fair value hierarchy [member] | Other receivables (non-Financial) [member]
Assets
Receivables C and NC
Receivables C and NC
Level 1 of fair value hierarchy [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member]
Assets
Other investments - current		9,943	76,260
Level 1 of fair value hierarchy [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Certificates of Deposits [member]
Assets
Other investments - current
Level 1 of fair value hierarchy [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Non - U.S. Sovereign Bills [member]
Assets
Other investments - current			41,370
Level 1 of fair value hierarchy [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Commercial Papers [member]
Assets
Other investments - current		9,943	34,890
Level 1 of fair value hierarchy [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Other notes [member]
Assets
Other investments - current
Level 1 of fair value hierarchy [member] | Bonds and other fixed income [member]
Assets
Other investments - current		449,533	522,131
Other investments - non-current
Level 1 of fair value hierarchy [member] | Bonds and other fixed income [member] | U.S. government securities [member]
Assets
Other investments - current		130,477	216,732
Level 1 of fair value hierarchy [member] | Bonds and other fixed income [member] | Non - U.S. government securities [member]
Assets
Other investments - current		124,780	56,161
Level 1 of fair value hierarchy [member] | Bonds and other fixed income [member] | Corporates securities [member]
Assets
Other investments - current		194,276	249,238
Level 1 of fair value hierarchy [member] | Bonds and other fixed income [member] | Structured Notes [member]
Assets
Other investments - current
Level 1 of fair value hierarchy [member] | Bonds and other fixed income [member] | Mortgage- and Asset-backed securities [member]
Assets
Other investments - current
Level 1 of fair value hierarchy [member] | Other investments [member]
Assets
Other investments - current
Other investments - non-current
Level 1 of fair value hierarchy [member] | Fund investments [member]
Assets
Other investments - current			9,475
Level 2 of fair value hierarchy [member]
Assets
Cash and cash equivalents
Cash at banks
Liquidity funds
Short – term investments
Other investments - current		511,992	779,245
Other investments - non-current
Current trade receivables
Receivables C and NC		8,230	2,759
Non-current financial assets available-for-sale	[1]
Total		520,222	782,004
Receivables C and NC		8,230	2,759
Liabilities
Borrowings C and NC
Trade payables
Other liabilities		39,799	42,635
Total		39,799	42,635
Level 2 of fair value hierarchy [member] | Foreign exchange derivatives contracts [member]
Liabilities
Other liabilities		39,799	42,635
Level 2 of fair value hierarchy [member] | Other liabilities (non-Financial) [member]
Liabilities
Other liabilities
Level 2 of fair value hierarchy [member] | Other liabilities [member]
Liabilities
Other liabilities
Level 2 of fair value hierarchy [member] | Derivatives [member]
Assets
Receivables C and NC		8,230
Receivables C and NC		8,230
Level 2 of fair value hierarchy [member] | Foreign exchange derivatives contracts [member]
Assets
Receivables C and NC			2,759
Receivables C and NC			2,759
Level 2 of fair value hierarchy [member] | Other receivables [member]
Assets
Receivables C and NC
Receivables C and NC
Level 2 of fair value hierarchy [member] | Other receivables (non-Financial) [member]
Assets
Receivables C and NC
Receivables C and NC
Level 2 of fair value hierarchy [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member]
Assets
Other investments - current		427,463	705,769
Level 2 of fair value hierarchy [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Certificates of Deposits [member]
Assets
Other investments - current		297,788	525,068
Level 2 of fair value hierarchy [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Non - U.S. Sovereign Bills [member]
Assets
Other investments - current
Level 2 of fair value hierarchy [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Commercial Papers [member]
Assets
Other investments - current
Level 2 of fair value hierarchy [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Other notes [member]
Assets
Other investments - current		129,675	180,701
Level 2 of fair value hierarchy [member] | Bonds and other fixed income [member]
Assets
Other investments - current		84,429	73,476
Other investments - non-current
Level 2 of fair value hierarchy [member] | Bonds and other fixed income [member] | U.S. government securities [member]
Assets
Other investments - current
Level 2 of fair value hierarchy [member] | Bonds and other fixed income [member] | Non - U.S. government securities [member]
Assets
Other investments - current
Level 2 of fair value hierarchy [member] | Bonds and other fixed income [member] | Corporates securities [member]
Assets
Other investments - current
Level 2 of fair value hierarchy [member] | Bonds and other fixed income [member] | Structured Notes [member]
Assets
Other investments - current		68,044
Level 2 of fair value hierarchy [member] | Bonds and other fixed income [member] | Mortgage- and Asset-backed securities [member]
Assets
Other investments - current		16,385	73,476
Level 2 of fair value hierarchy [member] | Other investments [member]
Assets
Other investments - current		100
Other investments - non-current
Level 2 of fair value hierarchy [member] | Fund investments [member]
Assets
Other investments - current
Level 3 of fair value hierarchy [member]
Assets
Cash and cash equivalents
Cash at banks
Liquidity funds
Short – term investments
Other investments - current
Other investments - non-current		4,837	1,670
Current trade receivables
Receivables C and NC
Non-current financial assets available-for-sale	[1]	21,572	21,572
Total		26,409	23,242
Receivables C and NC
Liabilities
Borrowings C and NC
Trade payables
Other liabilities
Total
Level 3 of fair value hierarchy [member] | Foreign exchange derivatives contracts [member]
Liabilities
Other liabilities
Level 3 of fair value hierarchy [member] | Other liabilities (non-Financial) [member]
Liabilities
Other liabilities
Level 3 of fair value hierarchy [member] | Other liabilities [member]
Liabilities
Other liabilities
Level 3 of fair value hierarchy [member] | Derivatives [member]
Assets
Receivables C and NC
Receivables C and NC
Level 3 of fair value hierarchy [member] | Foreign exchange derivatives contracts [member]
Assets
Receivables C and NC
Receivables C and NC
Level 3 of fair value hierarchy [member] | Other receivables [member]
Assets
Receivables C and NC
Receivables C and NC
Level 3 of fair value hierarchy [member] | Other receivables (non-Financial) [member]
Assets
Receivables C and NC
Receivables C and NC
Level 3 of fair value hierarchy [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member]
Assets
Other investments - current
Level 3 of fair value hierarchy [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Certificates of Deposits [member]
Assets
Other investments - current
Level 3 of fair value hierarchy [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Non - U.S. Sovereign Bills [member]
Assets
Other investments - current
Level 3 of fair value hierarchy [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Commercial Papers [member]
Assets
Other investments - current
Level 3 of fair value hierarchy [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Other notes [member]
Assets
Other investments - current
Level 3 of fair value hierarchy [member] | Bonds and other fixed income [member]
Assets
Other investments - current
Other investments - non-current
Level 3 of fair value hierarchy [member] | Bonds and other fixed income [member] | U.S. government securities [member]
Assets
Other investments - current
Level 3 of fair value hierarchy [member] | Bonds and other fixed income [member] | Non - U.S. government securities [member]
Assets
Other investments - current
Level 3 of fair value hierarchy [member] | Bonds and other fixed income [member] | Corporates securities [member]
Assets
Other investments - current
Level 3 of fair value hierarchy [member] | Bonds and other fixed income [member] | Structured Notes [member]
Assets
Other investments - current
Level 3 of fair value hierarchy [member] | Bonds and other fixed income [member] | Mortgage- and Asset-backed securities [member]
Assets
Other investments - current
Level 3 of fair value hierarchy [member] | Other investments [member]
Assets
Other investments - current
Other investments - non-current		4,837	1,670
Level 3 of fair value hierarchy [member] | Fund investments [member]
Assets
Other investments - current
Loans and receivables, category [member]
Assets
Cash and cash equivalents		150,948	92,730
Cash at banks		150,948	92,730
Liquidity funds
Short – term investments
Other investments - current
Other investments - non-current
Current trade receivables		1,214,060	954,685
Receivables C and NC		176,716	176,990
Non-current financial assets available-for-sale	[1]
Total		1,541,724	1,224,405
Receivables C and NC		176,716	176,990
Liabilities
Borrowings C and NC		965,859	840,236
Trade payables		750,739	556,834
Other liabilities
Total		1,716,598	1,397,070
Loans and receivables, category [member] | Foreign exchange derivatives contracts [member]
Liabilities
Other liabilities
Loans and receivables, category [member] | Other liabilities (non-Financial) [member]
Liabilities
Other liabilities
Loans and receivables, category [member] | Other liabilities [member]
Liabilities
Other liabilities
Loans and receivables, category [member] | Derivatives [member]
Assets
Receivables C and NC
Receivables C and NC
Loans and receivables, category [member] | Foreign exchange derivatives contracts [member]
Assets
Receivables C and NC
Receivables C and NC
Loans and receivables, category [member] | Other receivables [member]
Assets
Receivables C and NC		176,716	176,990
Receivables C and NC		176,716	176,990
Loans and receivables, category [member] | Other receivables (non-Financial) [member]
Assets
Receivables C and NC
Receivables C and NC
Loans and receivables, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member]
Assets
Other investments - current
Loans and receivables, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Certificates of Deposits [member]
Assets
Other investments - current
Loans and receivables, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Non - U.S. Sovereign Bills [member]
Assets
Other investments - current
Loans and receivables, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Commercial Papers [member]
Assets
Other investments - current
Loans and receivables, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Other notes [member]
Assets
Other investments - current
Loans and receivables, category [member] | Bonds and other fixed income [member]
Assets
Other investments - current
Other investments - non-current
Loans and receivables, category [member] | Bonds and other fixed income [member] | U.S. government securities [member]
Assets
Other investments - current
Loans and receivables, category [member] | Bonds and other fixed income [member] | Non - U.S. government securities [member]
Assets
Other investments - current
Loans and receivables, category [member] | Bonds and other fixed income [member] | Corporates securities [member]
Assets
Other investments - current
Loans and receivables, category [member] | Bonds and other fixed income [member] | Structured Notes [member]
Assets
Other investments - current
Loans and receivables, category [member] | Bonds and other fixed income [member] | Mortgage- and Asset-backed securities [member]
Assets
Other investments - current
Loans and receivables, category [member] | Other investments [member]
Assets
Other investments - current
Other investments - non-current
Loans and receivables, category [member] | Fund investments [member]
Assets
Other investments - current
Held-to-maturity investments, category [member]
Assets
Cash and cash equivalents
Cash at banks
Liquidity funds
Short – term investments
Other investments - current		220,838	246,031
Other investments - non-current		123,498	248,049
Current trade receivables
Receivables C and NC
Non-current financial assets available-for-sale	[1]
Total		344,336	494,080
Receivables C and NC
Liabilities
Borrowings C and NC
Trade payables
Other liabilities
Total
Held-to-maturity investments, category [member] | Foreign exchange derivatives contracts [member]
Liabilities
Other liabilities
Held-to-maturity investments, category [member] | Other liabilities (non-Financial) [member]
Liabilities
Other liabilities
Held-to-maturity investments, category [member] | Other liabilities [member]
Liabilities
Other liabilities
Held-to-maturity investments, category [member] | Derivatives [member]
Assets
Receivables C and NC
Receivables C and NC
Held-to-maturity investments, category [member] | Foreign exchange derivatives contracts [member]
Assets
Receivables C and NC
Receivables C and NC
Held-to-maturity investments, category [member] | Other receivables [member]
Assets
Receivables C and NC
Receivables C and NC
Held-to-maturity investments, category [member] | Other receivables (non-Financial) [member]
Assets
Receivables C and NC
Receivables C and NC
Held-to-maturity investments, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member]
Assets
Other investments - current
Held-to-maturity investments, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Certificates of Deposits [member]
Assets
Other investments - current
Held-to-maturity investments, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Non - U.S. Sovereign Bills [member]
Assets
Other investments - current
Held-to-maturity investments, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Commercial Papers [member]
Assets
Other investments - current
Held-to-maturity investments, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Other notes [member]
Assets
Other investments - current
Held-to-maturity investments, category [member] | Bonds and other fixed income [member]
Assets
Other investments - current		220,838	246,031
Other investments - non-current		123,498	248,049
Held-to-maturity investments, category [member] | Bonds and other fixed income [member] | U.S. government securities [member]
Assets
Other investments - current
Held-to-maturity investments, category [member] | Bonds and other fixed income [member] | Non - U.S. government securities [member]
Assets
Other investments - current		36,283	32,644
Held-to-maturity investments, category [member] | Bonds and other fixed income [member] | Corporates securities [member]
Assets
Other investments - current		184,555	213,387
Held-to-maturity investments, category [member] | Bonds and other fixed income [member] | Structured Notes [member]
Assets
Other investments - current
Held-to-maturity investments, category [member] | Bonds and other fixed income [member] | Mortgage- and Asset-backed securities [member]
Assets
Other investments - current
Held-to-maturity investments, category [member] | Other investments [member]
Assets
Other investments - current
Other investments - non-current
Held-to-maturity investments, category [member] | Fund investments [member]
Assets
Other investments - current
Financial assets available-for-sale, category [member]
Assets
Cash and cash equivalents
Cash at banks
Liquidity funds
Short – term investments
Other investments - current
Other investments - non-current
Current trade receivables
Receivables C and NC
Non-current financial assets available-for-sale	[1]	21,572	21,572
Total		21,572	21,572
Receivables C and NC
Liabilities
Borrowings C and NC
Trade payables
Other liabilities
Total
Financial assets available-for-sale, category [member] | Foreign exchange derivatives contracts [member]
Liabilities
Other liabilities
Financial assets available-for-sale, category [member] | Other liabilities (non-Financial) [member]
Liabilities
Other liabilities
Financial assets available-for-sale, category [member] | Other liabilities [member]
Liabilities
Other liabilities
Financial assets available-for-sale, category [member] | Derivatives [member]
Assets
Receivables C and NC
Receivables C and NC
Financial assets available-for-sale, category [member] | Foreign exchange derivatives contracts [member]
Assets
Receivables C and NC
Receivables C and NC
Financial assets available-for-sale, category [member] | Other receivables [member]
Assets
Receivables C and NC
Receivables C and NC
Financial assets available-for-sale, category [member] | Other receivables (non-Financial) [member]
Assets
Receivables C and NC
Receivables C and NC
Financial assets available-for-sale, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member]
Assets
Other investments - current
Financial assets available-for-sale, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Certificates of Deposits [member]
Assets
Other investments - current
Financial assets available-for-sale, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Non - U.S. Sovereign Bills [member]
Assets
Other investments - current
Financial assets available-for-sale, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Commercial Papers [member]
Assets
Other investments - current
Financial assets available-for-sale, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Other notes [member]
Assets
Other investments - current
Financial assets available-for-sale, category [member] | Bonds and other fixed income [member]
Assets
Other investments - current
Other investments - non-current
Financial assets available-for-sale, category [member] | Bonds and other fixed income [member] | U.S. government securities [member]
Assets
Other investments - current
Financial assets available-for-sale, category [member] | Bonds and other fixed income [member] | Non - U.S. government securities [member]
Assets
Other investments - current
Financial assets available-for-sale, category [member] | Bonds and other fixed income [member] | Corporates securities [member]
Assets
Other investments - current
Financial assets available-for-sale, category [member] | Bonds and other fixed income [member] | Structured Notes [member]
Assets
Other investments - current
Financial assets available-for-sale, category [member] | Bonds and other fixed income [member] | Mortgage- and Asset-backed securities [member]
Assets
Other investments - current
Financial assets available-for-sale, category [member] | Other investments [member]
Assets
Other investments - current
Other investments - non-current
Financial assets available-for-sale, category [member] | Fund investments [member]
Assets
Other investments - current
Financial assets at fair value through profit or loss, category [member]
Assets
Cash and cash equivalents		179,273	307,007
Cash at banks
Liquidity funds		66,033	215,807
Short – term investments		113,240	91,200
Other investments - current		971,468	1,387,111
Other investments - non-current		4,837	1,670
Current trade receivables
Receivables C and NC		8,230	2,759
Non-current financial assets available-for-sale	[1]
Total		1,163,808	1,698,547
Receivables C and NC		8,230	2,759
Liabilities
Borrowings C and NC
Trade payables
Other liabilities		39,799	42,635
Total		39,799	42,635
Financial assets at fair value through profit or loss, category [member] | Foreign exchange derivatives contracts [member]
Liabilities
Other liabilities		39,799	42,635
Financial assets at fair value through profit or loss, category [member] | Other liabilities (non-Financial) [member]
Liabilities
Other liabilities
Financial assets at fair value through profit or loss, category [member] | Other liabilities [member]
Liabilities
Other liabilities
Financial assets at fair value through profit or loss, category [member] | Derivatives [member]
Assets
Receivables C and NC		8,230
Receivables C and NC		8,230
Financial assets at fair value through profit or loss, category [member] | Foreign exchange derivatives contracts [member]
Assets
Receivables C and NC			2,759
Receivables C and NC			2,759
Financial assets at fair value through profit or loss, category [member] | Other receivables [member]
Assets
Receivables C and NC
Receivables C and NC
Financial assets at fair value through profit or loss, category [member] | Other receivables (non-Financial) [member]
Assets
Receivables C and NC
Receivables C and NC
Financial assets at fair value through profit or loss, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member]
Assets
Other investments - current		437,406	782,029
Financial assets at fair value through profit or loss, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Certificates of Deposits [member]
Assets
Other investments - current		297,788	525,068
Financial assets at fair value through profit or loss, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Non - U.S. Sovereign Bills [member]
Assets
Other investments - current			41,370
Financial assets at fair value through profit or loss, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Commercial Papers [member]
Assets
Other investments - current		9,943	34,890
Financial assets at fair value through profit or loss, category [member] | Fixed Income (time-deposit, zero coupon bonds, commercial papers) [member] | Other notes [member]
Assets
Other investments - current		129,675	180,701
Financial assets at fair value through profit or loss, category [member] | Bonds and other fixed income [member]
Assets
Other investments - current		533,962	595,607
Other investments - non-current
Financial assets at fair value through profit or loss, category [member] | Bonds and other fixed income [member] | U.S. government securities [member]
Assets
Other investments - current		130,477	216,732
Financial assets at fair value through profit or loss, category [member] | Bonds and other fixed income [member] | Non - U.S. government securities [member]
Assets
Other investments - current		124,780	56,161
Financial assets at fair value through profit or loss, category [member] | Bonds and other fixed income [member] | Corporates securities [member]
Assets
Other investments - current		194,276	249,238
Financial assets at fair value through profit or loss, category [member] | Bonds and other fixed income [member] | Structured Notes [member]
Assets
Other investments - current		68,044
Financial assets at fair value through profit or loss, category [member] | Bonds and other fixed income [member] | Mortgage- and Asset-backed securities [member]
Assets
Other investments - current		16,385	73,476
Financial assets at fair value through profit or loss, category [member] | Other investments [member]
Assets
Other investments - current		100
Other investments - non-current		$ 4,837	1,670
Financial assets at fair value through profit or loss, category [member] | Fund investments [member]
Assets
Other investments - current			$ 9,475
[1] For further detail regarding Available for sale assets, see Note 31.

X

- References

No definition available.

+ Details

Name:	ifrs-full_AssetsAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of cash balances held at banks.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2017-01-01
-Paragraph 45
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_45&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_BalancesWithBanks
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_Borrowings
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 7
-IssueDate 2017-01-01
-Paragraph 45
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_45&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2017-01-01
-Paragraph B13
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_B13_a&doctype=Appendix&seq=2
-URIDate 2017-03-09

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 54
-Subparagraph i
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_i&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_CashAndCashEquivalents
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of current investments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_CurrentInvestments
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of current trade receivables. [Refer: Trade receivables]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 78
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_78_b&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 68
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_68&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_CurrentTradeReceivables
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2017-01-01
-Paragraph 25
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_25&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2018-01-01
-Name IFRS
-Number 7
-IssueDate 2017-01-01
-Paragraph 35H
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_35H&doctype=Standard
-URIDate 2017-03-09

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2018-01-01
-Name IFRS
-Number 7
-IssueDate 2017-01-01
-Paragraph 35I
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_35I&doctype=Standard
-URIDate 2017-03-09

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Note Effective 2018-01-01
-Name IFRS
-Number 7
-IssueDate 2017-01-01
-Paragraph 35M
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_35M&doctype=Standard
-URIDate 2017-03-09

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Note Effective 2018-01-01
-Name IFRS
-Number 7
-IssueDate 2017-01-01
-Paragraph 35N
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_35N&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_FinancialAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2017-01-01
-Paragraph 25
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_25&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_FinancialLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	ifrs-full_LiabilitiesAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of non-current financial assets available-for-sale. [Refer: Financial assets available-for-sale; Non-current financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2018-01-01
-Name IFRS
-Number 7
-IssueDate 2017-01-01
-Paragraph 8
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-02&anchor=para_8_d&doctype=Standard&book=B
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_NoncurrentFinancialAssetsAvailableforsale
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of non-current investments other than investments accounted for using the equity method. [Refer: Investments accounted for using equity method; Non-current assets; Investments other than investments accounted for using equity method]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_NoncurrentInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of current liabilities that the entity does not separately disclose in the same statement or note. [Refer: Current liabilities]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_55&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_OtherCurrentLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount receivable by the entity that it does not separately disclose in the same statement or note.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 78
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_78_b&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_OtherReceivables
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

A classification of cash equivalents representing short-term deposits. [Refer: Cash equivalents]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2017-01-01
-Paragraph 45
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_45&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_ShorttermDepositsClassifiedAsCashEquivalents
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

A classification of cash equivalents representing short-term investments. [Refer: Cash equivalents]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2017-01-01
-Paragraph 45
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_45&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_ShorttermInvestmentsClassifiedAsCashEquivalents
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of current trade payables and current other payables. [Refer: Current trade payables; Other current payables]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 54
-Subparagraph k
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_k&doctype=Standard
-URIDate 2017-03-09

+ Details

Name:	ifrs-full_TradeAndOtherCurrentPayables
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	ifrs-full_ClassesOfLiabilitiesAxis=ts_ForeignExchangeDerivativesContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfLiabilitiesAxis=ts_OtherLiabilitiesNonfinancialMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfLiabilitiesAxis=ts_OtherLiabilities1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=ifrs-full_DerivativesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=ts_ForeignExchangeDerivativesContractsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=ts_OtherReceivablesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfAssetsAxis=ts_OtherReceivablesNonfinancialMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentAxis=ts_FixedIncomeTimedepositZeroCouponBondsCommercialPapersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentSecuritiesClassAxis=ts_CertificatesOfDepositsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentSecuritiesClassAxis=ts_NonUsSovereignBillsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentSecuritiesClassAxis=ts_CommercialPapersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentSecuritiesClassAxis=ts_OtherNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentAxis=ts_BondsAndOtherFixedIncomeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentSecuritiesClassAxis=ts_UsGovernmentSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentSecuritiesClassAxis=ts_NonUsGovernmentSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentSecuritiesClassAxis=ts_CorporatesSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentSecuritiesClassAxis=ts_StructuredNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentSecuritiesClassAxis=ts_MortgageAndAssetbackedSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentAxis=ts_OtherInvestments1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentAxis=ts_FundInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_LevelsOfFairValueHierarchyAxis=ifrs-full_Level1OfFairValueHierarchyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_LevelsOfFairValueHierarchyAxis=ifrs-full_Level2OfFairValueHierarchyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_LevelsOfFairValueHierarchyAxis=ifrs-full_Level3OfFairValueHierarchyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfFinancialAssetsAxis=ifrs-full_LoansAndReceivablesCategoryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfFinancialAssetsAxis=ifrs-full_HeldtomaturityInvestmentsCategoryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfFinancialAssetsAxis=ifrs-full_FinancialAssetsAvailableforsaleCategoryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfFinancialAssetsAxis=ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: