The aggregate changes in the balance of gross unrecognized tax benefits, which excludes interest and penalties, for 2013, 2012 and 2011, is as follows (in millions):
| 2013 | 2012 | 2011 | ||||||||||
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Beginning Balance |
$ | 2,062 | $ | 1,375 | $ | 943 | ||||||
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Increases related to tax positions taken during a prior year |
745 | 340 | 49 | |||||||||
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Decreases related to tax positions taken during a prior year |
(118 | ) | (107 | ) | (39 | ) | ||||||
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Increases related to tax positions taken during the current year |
626 | 467 | 425 | |||||||||
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Decreases related to settlements with taxing authorities |
(592 | ) | (3 | ) | 0 | |||||||
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Decreases related to expiration of statute of limitations |
(9 | ) | (10 | ) | (3 | ) | ||||||
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Ending Balance |
$ | 2,714 | $ | 2,062 | $ | 1,375 | ||||||
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