Equity (Stock Repurchases) (Details) (USD $)	12 Months Ended		0 Months Ended	12 Months Ended									6 Months Ended	1 Months Ended
	Dec. 31, 2013	Jun. 19, 2013	Dec. 14, 2012 Common Class A and Common Class C Member [Member]	Dec. 31, 2013 Common Class A Stock Purchased Under Repurchase Programs [Member]	Dec. 31, 2012 Common Class A Stock Purchased Under Repurchase Programs [Member]	Dec. 31, 2011 Common Class A Stock Purchased Under Repurchase Programs [Member]	Dec. 31, 2013 Common Class C Stock Purchased Under Repurchase Programs [Member]	Dec. 31, 2012 Common Class C Stock Purchased Under Repurchase Programs [Member]	Dec. 31, 2011 Common Class C Stock Purchased Under Repurchase Programs [Member]	Dec. 31, 2013 Total Common Class C and Class A Stock Purchased Under Repurchase Programs [Member]	Dec. 31, 2012 Total Common Class C and Class A Stock Purchased Under Repurchase Programs [Member]	Dec. 31, 2011 Total Common Class C and Class A Stock Purchased Under Repurchase Programs [Member]	Sep. 30, 2011 LGI Notes Exchange [Member]	Feb. 13, 2014 Subsequent Event [Member] Common Class A and Common Class C Member [Member]
Class of Stock [Line Items]
Stock repurchase, authorized amount			$ 3,500,000,000.0
Stock repurchase, remaining authorized amount (in shares)	2,522,100,000
Stock repurchase, authorized amount increase														1,000,000,000
Distributable reserves recognized		29,000,000,000
Payments to repurchase convertible debt													186,700,000
Shares purchased pursuant to repurchase programs (in shares)				6,550,197	5,611,380	9,114,812	9,105,600	13,585,729	14,203,563
Average price paid per share pursuant to repurchase programs (in dollars per shares)				$ 73.82	$ 53.46	$ 38.99	$ 73.41	$ 50.11	$ 39.22
Total cost for stock purchased pursuant to repurchase programs										$ 1,151,900,000	$ 980,700,000	$ 912,300,000