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Transocean Proxy Statement and 2010 Annual Report

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TRANSOCEAN LTD. AND SUBSIDIARIES<br />

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS — Continued<br />

Definite-lived intangible assets—The gross carrying amounts of our drilling contract intangibles <strong>and</strong> drilling management<br />

customer relationships, both of which we consider to be definite-lived intangible assets <strong>and</strong> intangible liabilities, <strong>and</strong> accumulated<br />

amortization <strong>and</strong> impairment were as follows (in millions):<br />

Year ended December 31, <strong>2010</strong> Year ended December 31, 2009<br />

Gross<br />

carrying<br />

amount<br />

AR-91<br />

Accumulated<br />

amortization<br />

<strong>and</strong><br />

impairment<br />

Net<br />

carrying<br />

amount<br />

Gross<br />

carrying<br />

amount<br />

Accumulated<br />

amortization<br />

<strong>and</strong><br />

impairment<br />

Drilling contract intangible assets<br />

Balance, beginning of period $ 191 $ (167) $ 24 $ 191 $ (123 ) $ 68<br />

Amortization — (18) (18) — (44 ) (44 )<br />

Balance, end of period 191 (185) 6 191 (167 ) 24<br />

Customer relationships<br />

Balance, beginning of period 148 (84) 64 148 (27 ) 121<br />

Amortization — (5) (5) — (8 ) (8 )<br />

Impairment — — — — (49 ) (49 )<br />

Balance, end of period 148 (89) 59 148 (84 ) 64<br />

Total definite-lived intangible assets<br />

Balance, beginning of period 339 (252) 87 339 (150 ) 189<br />

Amortization — (23) (23) — (53 ) (53 )<br />

Impairment — — — — (49 ) (49 )<br />

Balance, end of period $ 339 (275) 64 $ 339 $ (252 ) $ 87<br />

Drilling contract intangible liabilities<br />

Balance, beginning of period $ 1,494 $ (1,226) $ 268 $ 1,494 $ (901 ) $ 593<br />

Amortization — (116) (116) — (325 ) (325 )<br />

Balance, end of period $ 1,494 (1,342) 152 $ 1,494 $ (1,226 ) $ 268<br />

We amortize the drilling contract intangibles over the term of the respective drilling contracts using the straight-line method of<br />

amortization, recognized in contract intangible revenues on our consolidated statements of operations. We amortize the customer<br />

relationships intangible asset over its 15-year life using the straight-line method of amortization, recognized in operating <strong>and</strong> maintenance<br />

expense on our consolidated statements of operations. The estimated net future amortization related to intangible assets <strong>and</strong> liabilities as<br />

of December 31, <strong>2010</strong>, was as follows (in millions):<br />

Drilling<br />

contract<br />

intangibles<br />

Customer<br />

relationships<br />

Years ending December 31,<br />

2011 $ (45 ) $ 5<br />

2012 (42 ) 5<br />

2013 (25 ) 5<br />

2014 (15 ) 5<br />

2015 (14 ) 5<br />

Thereafter (6 ) 34<br />

Total intangible assets (liabilities), net $ (147 ) $ 59<br />

Net<br />

carrying<br />

amount

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